Acacia Farnesiana, 109 Greggy, 109 Acanthite, 325

Home , Irrigation in Mexico, Naica Mine, Sierra Madre del Sur

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Acacia amethyst quartz, 225 Arroyo Ixtahuantante, 99 farnesiana, 109 Amexquite Norte dome, 415 Arroyo La Colorado, 137 greggy, 109 Amexquite Norte well, 420, 422, 423 Arroyo La Danta, 327 acanthite, 325, 391, 392, 412 ammonia, 32 Arroyo La Herradura, 231 Acatán Formation, 145, 343, 344, 346 ammonites, 144, 229, 280, 283 Arroyo Las Pocitas, 189 Acatlán Schists, 144, 145 amphiboles, 65, 84 Arroyo Prieto dome, 419 Acatlán uplift, 142 amphibolite, 339, 341, 373 Arroyo Puerto Chino, 210 acid andesites, 15, 16, 20, 24, 62, 63, 73, Arroyo Real del Viejo, 151 carbonic, 320 80, 83, 84, 104, 170, 195, 197, Arroyo San Miguel, 187 phosphoric, 165 199, 210, 244, 267, 288, 324, Arroyo San Milano, 184, 187, 189 actinolite, 245, 254 328, 339, 353, 365, 373, 406 Arroyo Tizapa, 374 Acuña-Laredo subbasin, 128 dikes, 201, 296 arsenic, 376, 412 Adjunta Basin, 110, 114 flows, 83, 219, 272, 296 arsenopyrite, 214, 236, 245, 247, Adjunta subbasin, 136, 137 hypersthene, 407 263, 274, 294, 299, 302, 380, southeast, 137 microlitic, 63 390, 392, 400, 412 adularía, 225, 411, 412 phenocrysts, 272 asbestos, 240, 331, 343, 347 Agave lechuguilla, 109 porphyry, 254 ash, volcanic, 63, 189, 190 agglomerates, 94, 147, 195, 247, 296, sequence, 218 ashfall, 181, 184 298, 370, 385 series, 19 Atlantic rift, 319 aggregates, 137, 236 tuffs, 335, 407 augite, 301, 407 Agripo vein, 291 andradite, 245, 299 Aulacomyella, 318 Agua Caliente, 100, 101 anglesite, 257, 268, 400 Aurora Formation, 131, 137, 151, Agua Fría Camp, 71 anhydrite, 186, 263, 416, 421, 422 170, 241, 253,260, 269,272 Agua Fría fault, 64, 65, 67, 68 anomalies Austin Formation, 110, 132 Agua Fría rhyolite flows, 63 geophysical, 16 axinite, 390 Agua Nueva Formation, 80 Guadalupe Victoria, 16 Ayotusco Unite, 370 Agua Prieto township, 149 resistivity, 67 Azules Navacoyán manto, 263 Aguas del Fresnillo, 383 Riito, 16 azurite, 268, 328, 392 aguilarite, 284, 412 thermal, 16 Aguja Formation, 157 thermometry, 100 Bahía Magdalena block, 181 Ahualulco-Rio Salado-Ameca aquifer, antimony, 284, 285, 329, 376, 412 Bahía Vizcaíno block, 181 99 antimony oxide, 329 Baja California, 23 Ahuatlán deposit, 159 apatite, 315, 349, 352 geothermal province, 20 Ahuichila Formation, 269 aplite, 339 Baja California Norte, mines, 177 Alacrán chimney, 294 dikes, 218 Baja California Peninsula Alacrán orebody, 294 Aporo region, 59 Metallogenic Province, 177 alaskite, 261, 272 aquifers, 5, 30, 51, 61, 99, 115, 121, Baja California Sierras Province, 23 albite, 223, 225, 261 128, 167,170 Baja California Sur, 165,179,195 allanite, 349 high-temperature, 27 mines, 177 Allende sector, 142, 147 thermal, 17 Balsas basin, 3, 62 alluvial deposits, 20, 27, 136 aragonite, 346, 371 Balsas Group, 59 alluvium, 21, 63, 115, 136, 149, 151, Arana fault, 219, 223 Balsas-Mezcala basin, 380 152, 157, 164, 269, 339, 387, Arana vein, 225 Balsas River, 3 397 Arañas sector, 349 Baluarte anticline, 137 Almagres dome, 419 Araró area, 115 Baños Eréndira, 63 Almoloya de Las Granadas area, 377 Araró geothermal zone, 16 barite, 147, 218, 240, 333, 335, 336, Alpha aquifer, 30 Arbustus variant, 369 359 Alseseca Andesite, 80, 84 Archaeodictyomira sp., 385 Barranca Basin, 147 Alseseca Andesite volcanic unit, 80 Arenas fault, 84 coal deposits, 149 alteration, 72, 84, 90, 91, 180, 199, argentite, 214, 225, 284, 301, 325, stratigraphy, 147 201,375,409 328, 390, 412 Barranca Formation, 147, 148, 149, argillic, 409 argentite-acanthite, 412 210 hydro thermal, 223, 299, 390, 411 argillites, 27, 399 Barrancas Subprovince, 218 phyllic, 409 argillization, 299 Barril Viejo Formation, 131 potassic, 199, 201, 202, 411 Arnioceras, 315 Barrio Séptimo Gorge, 145, 147 propylitic, 411 Arroyo Canelo, 187 basalts, 20, 63, 73, 170, 374, 385, quartz-sericite, 366 Arroyo Chilitos, 385, 386 406 sericite, 202 Arroyo Colorado, 99 flows, 133, 195, 365, 373 supergene, 200, 202 Arroyo El Campamento, 184, 187 olivine, 83, 195 Alto Lerma basin, 66 Arroyo El Pino, 327 overflows, 148 Altotonga, 77 Arroyo El Sauz, 134 Basin and Range Province, 155, 241, aluminum, 127, 264 Arroyo Guadalupe, 187 259 Amarillas vein, 387 Arroyo Hondo, 98 batholiths, acid, 150

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3733983/9780813754703_backmatter.pdf by guest on 29 September 2021 426 Index Baucarit Formation, 147, 148, 210 347, 371, 380, 385, 387, 390, Cerro El Chapulín dome, 98 bauxite deposits, 331 397, 400, 408, 411 Cerro El Culebreado area, 100 Beleña Shaft, 383 calcsilicates, 200 Cerro El Culebreado dome, 98 Benevides Formation, 261 Calderones dike, 407 Cerro El Gallo dome, 99 bentonite, 240 Calderones Formation, 407 Cetro El Gavilán, 187 betafite, 349 caliche, 115, 127, 136, 229, 384 Cerro El Pedernal flow, 99 bicarbonates, 32 California Batholith, 27 Cerro El Salto, 147 Bigford Formation, 141 Campeche Bay area, 416 Cerro El Tule dome, 98, 99 Bigford Pico Clay, 142 Campo Morado, Guerrero, 353, 377 Cerro Ixtahuantante dome, 98 bioclasts, 260 canal irrigation, 172 Cerro La Encantada, 23 biotite, 201, 231, 301, 315, 358, 386 Cananea, Sonora, 197, 199 Cerro La Guásima, 147 birnessite, 320 Cananea-Duluth chimney, 199 Cerro La Yerbabuena, 63 Bisbee Group, 150 Cantil de La Vuelta, 186 Cerro Las Planillas area, 98, 99 bismuth, 412 cantiles, 179 Cerro Palo Verde, 184,189 Blancuzco, 189 Canutillo mine, 201 Cerro Prieto, 15, 38, 39, 41, 48, 53 boiling, 36 Cañada Muñiz fault, 10 A/B contact, 45 Bolañitos-Melladito, 408 Cañón de Chipoco, 315 aquifer, 32 Bolañitos Mine, 413, 404 Cañón de Las Flores, 98 drilling, 42 Bolañitos orebody, 408 Cañón de Tezintla, 315, 318 fault, 36, 41 Bolañitos vein, 408 Cañón de Tlaltepingo, 315 geochemistry, 32 boleite, 196 Cañón del Novillo, 239 geothermal field, 23, 27, 44, 51 Boleo Formation, 195 Cañón Peregrina, 315 geothermal gases, 33 boisons, 151 cap rock, 420, 421,422 geothermal reservoir, 30 Bolsón de Mapimi, 159 Capote Basin, 200 reservoir water, 32 bone fragments, vertebrate, 186 Capsa-Regenerador deposit, 371 shale density, 45 bones, 135 Capsa-Regenerador Mine, 370 temperatures, 44 bornite, 196, 199, 236, 301, 328, 361 Caracol Formation, 229, 397 volcano, 23, 24 boron, 32, 87, 284 Carbon II Project, 129 Cerro Prieto-Michoacán fault, 36 borosilicates, 285 carbonates, 196, 241, 245, 335, 345, Cerro Proaño, 383, 384, 385, 386, boulangerite, 301 346 390 Bravo Basin, zones, 109 carbonatization, 371 Cerro San Miguel, 99, 397 Brawley/Imperial fault, 28 Carbón I Project, 120,129 Cerrode del Caracol, 357 breccias, 80, 95, 98, 195, 199, 223, Carbón II Project, 119 Cerrode El Cantón, 356 297, 302, 339, 386 Carmen Member, 218 Cerros Santa Clara, 339 A/B, 368 Carmen-Pinguico, 408 cerussite, 255, 257, 268, 371, 400 flows, 195, 407 carnotite veins, 161 CFE. See Federal Commission of hydrothermal, 199 Carrizal, Hidalgo, 295, 296, 313 Electricity injection, 367 deposits, 305, 309 chalcedony, 196, 371, 386 quartz, 210, 214 Carrizo Formation, 140 Chalco, 159 tourmaline, 199 Casidulus sp., 114 chalcocite, 196, 200, 202, 328 volcanic, 385, 386 cassiterite, 245, 247 chalcopyrite, 196, 199, 200, 201, volcanoclastic, 358 Castaños subbasin, 131, 138 214, 218, 225, 231, 236, 245, Brisa Mar fan, 339 Cata Mine, 403 247 261, 263, 268, 274, 294, brucite, 346, 347 Carillas, 387 301, 302, 309, 310, 328, 335, Buda Formation, 254, 261 Cebada Mine, 405, 412, 413 358, 360, 361, 363, 375, 380, Buena Tierra Mine, 241, 244 Cebada orebody, 408 390, 391, 392, 412 Buenavista deposits, 161, 162, 164 Cedral vein, 225 Charcas anticline, 397 Bufa Formation, 406 Cedros dike, 407 Charcas mining district, 261, 279, Burgos Basin, 139, 162 Cedros Formation, 407 283, 285 Burro Range, 110 cement, 127 mine production, 285 bustamite, 225 cementation, 43 ore reserves, 285, 286 Bustillos fault, 244 calcareous, 136 chert, 229, 253, 254, 260, 269, 279, Cenozoic, 148,210,318 280, 283, 291, 296, 299, 336, C. Villa Pánuco, 159 Central block, 302 386 Caballeros Creek, 114 Central fault, 301 Chiapas, 9, 20, 167, 327, 331 Cabullona Basin, 149, 151 Central Mesa geothermal province, 20 Chiapas Grijalva, 10 coal deposits, 151 Central Mesa metallogenic province, Chiapas Sierra Madre, 10 physiography, 149 229, 381 Chichíndaro dike, 407 stratigraphy, 150 Central Mesa physiographic province, Chichíndaro Formation, 407 Cabullona Group, 150 279, 296 Chicoasén hydroelectric project, 10 Cacao dome, 419 cerargyrite, 257, 387 Chicoasén-Malpaso fault, 10 cadmium, 265, 373, 376 Cerritos Colorados graben, 104 Chicoasén reservoir, 9,10 Cahuasas Formation, 80, 315, 318 Cerritos Colorados-La Azufrera area, Chicontepec, 159 calcarenite, 260, 318, 320 16, 100 Chignautla, 79 calcilutite, 406 Cerro Alto dome, 98 Chihuahua, 134, 151,155, 159, 162, calcite, 65, 73, 84, 104, 196, 201, Cerro Blancuzco, 189 252, 259, 261, 267 218, 223, 225, 229, 236, 245, Cerro de La Gloria, 229, 231, 237 Chihuahua bolson, 170 247, 254, 261, 263, 272, 274, halo zones, 232 Chihuahua Range, 240 285, 299, 309, 320, 335, 341, Cerro de La Isleta, 146 Chilitos Formation, 385, 387, 391

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3733983/9780813754703_backmatter.pdf by guest on 29 September 2021 Index 421 chimneys, 241, 245, 251,256, 262, vitrinitic, 152, 157 Cuatro Ciénagas, 136 263, 310, 366, 375, 387, 390 zone, 136 Cucapá Sierra, 24 brecciated, 367 Coalcomán, Michoacán, 333 Cuchillo Formation, 241, 248 deposits, 263 coalluvium, 343, 346 evaporite sequence, 260 massive sulfide, 263 cobalt, 196 Cuenca del Bravo, 109 sulfide-silicate, 263 Cofre de Perote, 77, 78, 80 Cuencamé, Durango, 269 Chinameca dome, 417, 419 coke mixtures, 125 Cuerpo Colonia ore body, 289 Chipoco Formation, 318, 320 colloform, 386 Cuesta del Cura Formation, 229, 236, Chipoco Village, 318 Colombia Basin, 129 253, 269, 272, 279, 283, 397 Chivos de Abajo orebody, 358 Colombia-San Ignacio Basin, 139 Cueva de Las Espadas, 261 Chivos de Arriba orebody, 358 coal deposits, 142 Cueva Santa Branch vein, 387, 391, chlorine, 196 sedimentation, 140 392 chlorite, 65, 73, 104, 201, 223, 225, stratigraphy, 140 Cuicatlán, Oaxaca, 343 299, 309, 342, 357, 358, 375, Coloradita Mine, 358 Cuicatlán Group, 344 390, 411, 412 Coloradita orebody, 358 Cuitzeo Lake, 61 chlorite schist, 145 Colorado River sediments, 23, 36 Cuitzeo Lake basin, 66 Chorro chimney, 251 Combinación vein, 283 Culebra vein, 225 Chorro fault, 244 combustion, 124, 127 cumengite, 196 chromium, 177 Comondú Formation, 24, 179, 180, Cupido Formation, 115, 253, 279, 283 chrysocolla, 202, 328 195 Cupido reef complex, 131 chrysotile, 345 Compaftia Fresnillo, 265 cuprodescloizite, 284 slip, 331 compression, 137 currents Cidaris Limestone Formation, 144, Concepción del Oro district, 261, 383 marine, 190 145 Concepción Pápalo, Oaxaca, 343, 344 submarine, 184 Cinco Señores vein, 225 asbestos deposits, 331 cinder cones, 96 Concordia area, 301 dacites, 24, 62, 80, 170, 324 Cintura Formation, 150, 151 Concordia dike, 299 flows, 296 Citlaltépetl, 78 Concordia fault, 299, 301 San Andrés, 63 Ciudad Hidalgo, 59 Concordia mine, 295 dams, 172 Claiborne Group, 140, 141 conglomerates, 4, 20, 80, 86, 110, deformation, 137, 149, 269, 373 clastics, 148, 167, 279, 380 127, 133, 136, 147, 150 164, Del Rio Formation, 253, 254, 261 processes, 184, 190, 191 170, 186, 189, 195, 210, 229, Delicias area, 131 clay minerals, 65, 104, 329 244, 267, 269, 279, 296, 315, Delta fault, 28, 41 clays, 27, 73, 84, 133, 135, 136, 137, 318, 339, 344, 380, 386, 406 deposition, 140, 180, 181 139, 140, 141, 146, 152, 155, Consejo de Recursos Minerales, 161 deposits 272, 320, 335, 342, 361, 411 Consuelo Group, 144 alluvial, 20, 27 kaolinitic, 114 Continental Aguja, 157 antimony, 285, 329 climate, 109, 131, 180 convergence, 137 asbestos, 343, 347 Clostridium nigrificans, 421 copper, 177, 225, 236, 240, 252, 265, borite, 333 Coahuila, 4, 107, 129, 131,139, 253 268, 274, 285, 299, 304, 309, Buenavista, 161, 162, 164 Coahuila Basin, 129 328, 331, 335, 353, 356, 358, Campo Morado, 377 Coahuila Basin and Range province, 363, 366, 368, 373, 375, 377, Cananea, 197 131 390, 397, 400, 412 Capsa-Regenerador, 371 Coahuila bolson, 170 blister, 196 chimney, 263 Coahuila Coal District, 131 deposits, 195, 197, 199,201, 354 clastic, 148 Coahuila Geoanticline, 137 native, 196 coal, 4, 131, 132, 136,142,146, Coahuila Island, 131, 137, 279 reserves, 196, 327, 328, 399 149,151,157,159 Coahuila Peninsula, 115, 397 Copper King, Guerrero, 353 copper, 195, 197, 199, 201, 354 Coahuilites, 134 copper oxichlorides, 196 Cuale District, 355, 363 coal, 4,107, 112, 149,159 corals, 280, 406 El Chapóte, 161, 162 ash, 124 cordierite, 345, 346 epigenetic ore, 381 beds, 141, 148, 149 Corralitos, 159 Florida-Barrigón, 197 bituminous, 138, 151 covellite, 196, 361 fluorite, 388 carbon content, 152 Cretaceous, 131,133,148, 210, 241, flysch, 344 deposits, 4, 131, 132, 136,142, 357, 385 Fresnillo Cerro Proaño, 397 146,149,151,157,159 cristobalite, 359 geothermal, 11 development, 107, 129 crustaceans, 114 gold, 219, 284 dirty, 155 cryptomelane, 196, 320, 387 graphite, 331 exploration, 127 crystals hydro thermal, 161 potential, 160 euhedral, 236 ilmenite, 349, 351 reserves, 120,129,138,142,147, feldspar, 358 iron, 339 149,151,152,157 pyrite, 223, 318 La Aurora, 283 resources, 152 quartz, 63 La Colorado, 199 seams, 4, 110, 114, 120, 133, 134, sphalerite, 375 La Coma, 162, 164 136, 138, 141, 142, 146,148, Cualac Conglomerate, 144, 145 La Encantada, 257 150, 151, 155, 157 Cualac Quartzite, 145 La Minita, 335 subbasins, 131 Cuale District lacustrine, 133 subbituminous, 159 deposits, 355, 363 Las Bibianas, 283 thermal, 107 stratigraphy, 357 Las Lupes, 283

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Las Margaritas, 162 Domico de Los Peyotes anticline, 137 orebody, 289 Los Amóles, 164 drill holes, 127 El Refugio area, 257 manganese, 318 drilling El Refugio mine, 237, 288 manganese dioxide, 320 development, 71,101 El Refugio vein, 387 massive sulfide, 375, 376 exploratory, 42,71, 164 El Reliz area, 358 mineral, 195, 205, 403 druses, 386 El Rey orebody, 283, 285 nonmetallic, 195 Durango, 159, 164, 215, 219, 240, El Socorro chimney, 256 Nopal I, 162 261, 269, 381 El Temeroso, 284 opal, 354 D urania austinensis, 110 El Temeroso intrusive, 283, 285 ore, 355 El Temeroso stock, 283 peat, 119, 120, 159 Eagle Ford Formation, 110, 115, 132, El Tigre mine, 177 Peñoles, 162 151 El Triunfo mine, 177 polymetallic, 240, 331, 353, 381 Eagle Pass, Texas, 107, 110, 135 El Tubo, 339 Puerto m, 162 earthquake swarm, 36 El Vampiro fault, 63 pumice, 85 East Field, 241, 244, 245, 252 El Viejón fault, 63 Real de Angeles, 395 East Field Potosi Vein, 251 El Volcán, 339 Rey de Plata, 377 East Mesa geothermal field, 41 El Volcancito, 339 Río Escondido, 4 East Pacific Rise, 24 electricity, 3 Santa Rosa, 377 Echiva cactus, 109 electrum, 225, 412 silver, 219 Edwards Formation, 260 Encrucijada dome, 419 skarn, 210 El Abra Limestone, 170 energy sulfur, 415 3,11 Taxco, 331 El Alacran orebody, 291 geothermal, Tecomatlán, 159 El Aquajito Ranch, 186, 190 nuclear, 4,161 Tejaluca, 159 El Arco mine, 177 resources, 1 titanium, 349 El Boleo copper mine, 177, 195 Eocallista, 145 Tizapa, 377 El Bordón, 339, 342 Eocene, 114 Tlapa, 159 El Campamento, 339 epidote, 65, 73, 84, 104, 210, 245, Trancas, 162 El Capote chimney, 199 254, 309, 341, 366, 390 uranium, 161 El Ceboruco complex, 96 epidote cement zone, 46 zinc, 284 El Cedro mineworks, 403 Erendira area, 68 Descubridora fault, 261 El Chapóte deposit, 161, 162 erosion, 110, 115, 136, 167, 170, Deseada, 387 El Chiflador, 65 180, 181, 197, 202, 227, 229, Desulfovibrio El Chino fault, 65, 67, 68 279, 315, 356, 397, 413, 417 desulfuricans, 421 El Chino Module, 72 glacial, 78 orient is, 421 El Cobre body, 269 Escondido Formation, 110, 114, 117, detritus, 115, 180, 219, 339 El Cobre vein, 380 128, 133, 135, 137 dewatering, 135 El Conejo, 408 Escuadra Formation, 162 diabase, 347, 380 El Cristo, 134 Esperanza areas, 257 dikes, 218, 344 El Cristo Mine, 159 Esperanza chimney, 294 diaphorite, 284 El Cuatro orebody, 289 Esperanza Formation, 406, 413 diatomite, 184, 189, 194 El Cubo Mine, 403, 407, 408 Esperanza subbasin, 137 diatoms, 190 El Currutaco, 65, 68 Esperanza vein, 391 dikelets, 155 El Doctor Limestone, 170, 296 Espíritu Santo vein, 387 El Encino area, 149, 10, 151 Etla District, 349 dikes, 80, 151, 155, 199, 244, 245, El Fenomeno mine, 177 euhedral crystals, 236 272, 291, 313 El Gavilan subbasin, 137 Euphorbia antisyphilitica, 109 aplitic, 218, 376 El Infiernillo, 3 evaporation, 184 felsite, 261 El Mango, 339 evaporites, 131, 241, 420 latite, 301 El Mayor Sierras, 24 évapotranspiration, 66, 99 monzonite, 298 El Membrillo vein, 285 Exogyra, 145, 146, 155 rhyolite, 245, 267, 283, 324, 385 El Mezquite mine, 164 costata, 112, 114, 135 dinoflagellates, 190 El Monte, Hidalgo, 295, 299 ponderosa, 112 dinosaur bones, 155 deposit, 301 exploration diopside, 254, 309, 347 El Monte Mine, 299, 403 coal, 127 diorite, 201, 254, 275, 291, 327, 339, production, 304 geochemical, 101 341, 380 El Morro, 397 geothermal, 12, 15, 23, 42 hypabyssal, 385 El Morro fanglomerate, 296, 298 sulfur, 415 diorite-diabase, 244 El Nayal, 408 extension, 86, 181 Doctor Formation, 65, 68, 289, 291, El Nopal, 408 305 El Nopal mine, 152 Faby Tuff, 84 dolerites, 79, 385 El Oro-Tlalpujahua region, 59 facies dolomite, 146, 253, 299, 380, 412 El Pico Clay Formation, 141 amphibolite, 373 Dolores-Chiquihuites area, 301 El Pilar vein, 387 clay, 155 domes, 98 El Piñón anticlinorium, 298, 309 continental, 133, 155 dacitic, 78 El Plomo area, 257 diatomite, 189 lava, 98 El Portillo, 328 fluvial, 133 rhyolite, 80 El Realito Mine, 288 greenschist, 370, 373, 384 Río Salado, 98 geology, 287 La Negra, 291 salt, 417 mineralization, 287 marine, 137, 155

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3733983/9780813754703_backmatter.pdf by guest on 29 September 2021 Index 421 phosphatic, 186 felsites, 244 gabros, 347 FAST. See Fracture-Assisted Steam dikes, 261 galena, 196, 214, 218, 225, 236, 245, Flood Technology ferromolybdenite, 202 247, 257, 263, 268, 274, 294, faults, 28, 84, 138, 195, 219, 272, Flojo fault, 283 301, 310, 328, 335, 358, 363, 283 , 289, 302, 324, 349, 365, flooding, 7 375, 380, 387, 390, 392, 400, 380, 406, 407 Florida-Barrigón deposit, 197 412 Agua Fría, 64, 65, 67, 68 flows gangue minerals, 196, 225, 248, 275, Arana, 219, 223 andesite, 59, 63, 83, 219, 272, 285, 294, 328, 358, 366, 371, Arenas, 84 296 380, 390, 392 Brawley/Imperial, 28 basalt, 133, 195, 365, 373 garnet, 200, 262, 263, 272, 275, 294, Bustillos, 244 breccia, 195 299, 309, 315, 341, 347 Cañada Muñiz, 10 dacite, 296 garnierite, 345 Central, 301 felsic, 229 gas, 8, 170 Cerro Prieto, 36, 41 ground water, 99 atmospheric, 33 Chicoasén-Malpaso, 10 heat, 59, 269 noble, 33 Chorro, 244 hot-spring, 99 gastropods, 114, 155, 280 Concordia, 299, 301 hydrothermal, 84 genetic hypothesis, 319 Descubridora, 261 ignimbritic, 98 El Chino, 65, 67, 68 geochemistry, 32,87,202,284,412 El Vampiro, 63 lava, 62, 78, 98, 151, 170, 229, geochronology, 413 El Viejón, 63 298, 356, 382, 406, 407 geocronite, 360 Flojo, 283 pyroclastic, 98, 380 geohydrologic potential, 170 Gibraltar, 261 rhyolite, 96, 231, 244 geohydrology, 4, 128,167 Guadalupe, 299, 301 sand, 96 geology, 63,161,173,195, 215, Guamuchil, 219 thermal, 11, 85 219, 235, 259,287, 291,315, Hidalgo, 28 tuff, 148, 195 333,343,373,383,395 Imperial, 41 volcanic, 318, 339, 380 applied, 10 J-Norte, 244 fluids historical, 131,140,142,147,150, La Azufrera, 104 geothermal, 52, 87, 90 151 La Barranca, 84 hydrothermal, 51, 84, 336, 412 local, 119 La Bufa, 283 thermal 84 regional, 23, 59, 77,109, 210, 218, La Cuesta, 84 fluorapatite, 331 229, 241, 259, 269, 291, 333, La Encantada, 256 fluorine, 264 343,365,373,380,384 Loma Blanca, 84, 85, 90 fluorite, 236, 240, 245, 247, 254, structural, 28, 63, 84,117,120, Los Azufres, 67 261, 263, 268, 274, 287, 288, 137,142,146,149,151,157, Los Conejos, 84 380, 381, 388, 397, 400 219,244 Los Humeros, 84, 85, 89 fly ash, 127 subsurface, 27, 64 Mastaloya, 84, 90 flysch, 279, 344, 396 geomorphology, 109,119, 356, 396 Michoacán, 41 foraminifera, 180 Georgetown Formation, 261 Miguel Hidalgo, 299 planktonic, 184, 190 geothermal deposits, 11 Montaña, 261 Fortuna area, 257, 389 geothermal energy, 3,11 Morelia, 28 fossils reserves, 3 Naica, 261 ammonite, 272 geothermal exploration, 12, 15, 23, flora, 148 42 normal, 63, 149, 186, 190, 195, Fracture-Assisted Steam Flood geothermal fields, 15, 23, 63, 65, 68, 219, 233, 244, 256, 301, 335, Technology, 127 72, 74 344, 347, 374, 413 Frasch process, 415 geothermal model, 71 Peñoles, 244 freibergite, 375, 400 geothermal plants, 12 Pozo, 283 Fresnillo, Zacatecas, 240, 381 geothermal provinces, 15,18 Principal, 283 Fresnillo Beleña Mine, 383 geothermal reservoir, 16, 52, 72 reverse, 137, 157, 233 Fresnillo Cerro Proaño deposit, 397 geothermal resources, 11,15 Río Caliente, 98 Fresnillo District, 396 geothermal system, 413 San Alejo, 67 reserves, 394 geothermal wells, 28, 44, 87, 95 San Pedro, 386 silver production, 393 geothermoelectric generation, 15 Santa Agueda, 195 Fresnillo mines, 3 83 geothermometry, 87 Santiaguillo, 267 Fresnillo Mining District, 383 geothermopower generation, 12 strike-slip, 38, 79 stratigraphy, 385 geysers, 32 Tehuacán, 261 Fresnillo plant, 295 Gibraltar fault, 261 Torino, 261 Friio No Marino Formation, 161, 164 Gibraltar manto, 263 transform, 20, 24, 28, 36 Fronteras township, 149 glass, 63, 98 transverse, 84 fuels devitrified, 359 troughs, 79 nuclear, 4 glauconite, 142 fauna, 148 solid fossil, 120 Glen Rose Formation, 241 fayalite, 247 Fuentes-Rio Escondido Basin, Globotruncana, 144 Federal Commission of Electricity lithologic units, 110 Gloria Formation, 195 (CFE), 4 fumarole, 17, 32, 66, 84, 87, 90, 95, gneiss, 146, 240, 318, 331, 349 feldspars, 254, 272, 315, 329, 358, 98, 101, 104 augen, 373 360, 387 Fundifora de Monterrey, 159 Gochico deposit, 205 phenocrysts, 386, 387 furnace slag, 127 Gochico mine, 205 felsic intrusives, 161 goethite, 257, 341, 371

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gold, 177, 227, 237, 240, 252, 265, Hacienda de Charcas Viejas, 285 iron, 127, 257, 264, 283, 313, 339, 268, 275, 286, 323, 327, 331, Hacienda Grande Mine, 383 341, 349, 376, 411 353, 356, 358, 360, 363, 371, Hacienda Proano Mine, 383 mines, 354 373, 376, 391, 397, 404, 408, hausmannite, 320 ores, 339, 342 412, 414 heat flow, 59, 269 prospects, 177 deposits, 219, 284 hedenbergite, 245, 262, 263, 341, iron oxides, 162, 328, 349, 387, 400 mines, 267 390 irrigation, canal, 172 native, 284, 371, 387 hematite, 65, 104, 201, 245, 257, isotopic ratios, 413 production, 323, 326, 405 284, 320, 341, 347, 371, 385, Ixcuintoyac Formation, 377 reserves, 328 392 Ixmiquilpán-Actopán area, 296 Golondrina Mine, 379 residual, 200 grabens, 36, 62, 64, 77, 78, 170, 269 hemimorphite, 258, 284, 371, 400 J-Norte fault, 244 Gradenza Mine, 360 hessite, 294 Jackson Group, 142 Gradenza orebody, 356, 358 Hidalgo, 159, 261, 295, 315, 323 Jalapa, 77 Grande River, 10 Hidalgo fault, 28 Jalisco, 15, 95, 355 granite, 15, 24, 77, 199, 219, 339, homocline, 117, 120 jalpaite, 225, 284 358, 365 Homo my a, 261 jamesonite, 380 granitic basement, 51 hornblende, 78, 254, 358 jarosite, 200, 268, 371 granodiorite, 24, 201, 210, 218, 219, hornfels, 253, 257, 339 jasper, 196, 336 229, 237, 249, 244, 291, 318, Homos Member, 218 Jáltipan dome, 415, 419, 423 327, 331, 339, 353, 358, 365, horsts, 62, 64 Jesús María orebody, 358 377 Hosston Formation, 131 Jimulco anticlinoria, 269 graphite, 147, 148, 331 hot springs, 17, 32, 65, 95 José-López Portillo Power Plant, 127 gravels, 27, 128, 136, 146, 149, 189 Huajuapan Formation, 146 José-López Thermoelectric Power gravity, 86 Huaycocotla anticlinorium, 79, 219, Station Project, 109 graywacke, 344, 345, 377, 385, 389, 315 Juliantra area, 379 390 Huaycocotla Formation, 80, 315, 319 Juniperus sp., 369 Great Mexican Geosyncline, 170, Huitzo, Oaxaca, 349 Jurassic, 131, 210, 296, 315, 357 240 Huitzo area, 352 middle, 145 greenschist, 79, 370, 373, 384 Huitzo titanium, 331 greenstones, 391, 396 Huizachal Formation, 80, 315, 319 kaolin, 202, 387 Grijalva River basin, 3 hydration, 186 kaolinization, 272 grossularite, 245, 263, 272, 299 hydrocarbons, 1, 8,127, 421 kerargyrite, 371 ground waters, 170 hydroelectric generation, 7 Kia Formation, 269 Gryphaea, 261, 318 hydroelectric plan, national, 7 Kiamichi Formation, 131, 261 Guacamaya Formation, 315, 318 hydroelectricity, 7 Kicc Formation, 269 Guadalupe, 253, 257 hydrogeology, 99 knebelite, 247 Guadalupe block, 302 hydrology, 5,9 kutnahorite, 320 Guadalupe fault, 299, 301 hydromagnesite, 346 Guadalupe Mine, 201, 295, 370, 379 hydropower plants, 3 Guadalupe Victoria, 15 hydropower potential, 8 La Aguja sector, 151 Guadalupe Victoria anomaly, 16 hydrothermal alteration, 299, 390, La Aurora deposit, 283, 285 Guamuchil fault, 219 411 La Azufrera fault, 104 guanajuatite, 412 La Azufrera zone, 104 Guanajuato, 240, 287, 395, 403 hydrothermal deposits, 161 La Bandera, 339 mines, 404 hydrothermal fluids, 336, 412 La Barranca fault, 84 ore types, 412 hydrothermal mineralization, 385 La Blanca mine, 275 Guanajuato Conglomerate, 296, 413 hydrothermal system, 28 La Bufa fault, 283 Guanajuato District hydroxides, 328 La Bufa Mine, 284, 285 geochemistry, 412 hydrozincite, 400 La Caja Formation, 131, 279 mineralogy, 412 hypersthene, 407 La Campaña vein, 283 production, 405 La Cañada, 339 thermometry, 412 Ibarra vein, 233, 236 La Caridad copper deposits, 197, 201 Guanajuato Formation, 406 Idoceras, beds, 146 La Caridad fanglomerate, 201 Guanajuato Group, 405 ignimbrites, 15, 20, 83, 84, 95, 96, La Carolina Syncline, 298 metallurgy, 413 105, 162, 197, 218, 386, 407 La Casita Group, 131 smelter capacity, 413 ilmenite, 331, 349, 351 La Ciénaga dome, 419 Guanajuato Mining District, 403, 407, ilvaite, 247 La Colorado deposit, 199 406 Imperial fault, 41 La Colorado mineral body, 199 Indidura Formation, 229, 231 La Coma, 161 Guanajuato Veta Madre, 403 indium, 376 La Coma deposit, 162,164 Guascama, 240 Infierno Formation, 195 La Coma project, 164 Guentes-Rxo Escondido Basin, 107, infiltration, 30, 51, 66, 99 La Cruz mine, 295 129 Inguaran Mine, 365, 366 La Cuesta fault, 84 Guerrero, 159, 331, 353, 377, 379 Inguaran Mining District, 365 La Cumbre, 65 Guerrero Mine, 379 Inoceramus, 144 La Cumbre Module, 72 Gulf of Mexico Coastal Plain, 139 undulatiplicatus, 110 La Dicha, Guerrero, 353, 377 Guzmantla Formation, 80 Intermediate Fossiliferous Limestone La Encantada gypsum, 133, 180, 181, 184, 186, Member, 241 geological model, 257 190, 196, 359, 380, 416 intraclasts, 260, 299 deposits, 257

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La Encantada dome, 419 drilling, 101 leaching, 164 La Encantada fault, 256 exploration, 100 lead, 196, 218, 225, 236, 240, 252, La Encantada Mine, 256 geology, 96 264, 268, 272, 275, 285, 295, La Encantada Mining District geothermal field, 95,105 304, 309, 313, 331, 335, 337, geology, 253 hydrogeology, 99 353, 356, 363, 371, 373, 376, mineralization, 253 spa, 98 389, 391, 392, 395, 399, 412 stratigraphy, 253 well production, 104 lead sulfides, 366 La Escondida, 253 La Rata anticline, 137 lenses, 188 La Escondida chimney, 256 La Reina orebody, 283, 285 lenticles, 188 La Esmeralda, Mexico, 353 La Salvadora mine, 159 Leones-Santa Isabel trend, 283 La Esmeralda District, 267 La Sierra system, 407, 408 Leones vein, 283, 284, 285 La Esperanzas subbasin, 131 La Suerte Ranch, 186 Leopardo, 339 La Faja de Oro, 1 La Torres Mine, 407 leucoxene, 104 La Gloria, 134 La Trinidad Mine, 284 Libres-Oriental basin, 77 La Gloria anticline, 137 La Valenciana Mine, 403, 407 Libres-Oriental graben, 78, 79, 80 La Gloria Formation, 131 La Villita, 3 lignite, 120, 140, 159 La Guadalupe pegmatite deposit, 201 La Virgen Formation, 131 limestone, 3, 10, 15, 17, 20, 77, 80, La Huacana Municipality, Michoacán, La Vuelta cliff, 189 84, 90, 95, 110, 115, 127, 131, 365 La Yerbabuena glassy rhyolite, 63 134, 136, 145, 147, 161, 167, La India Mine, 275 lacustrine deposits, 133 184, 190, 196, 199, 210, 214, La Joya Formation, 279, 280, 283 lagoons, 32 229, 231, 239, 241, 244, 247, La Joya/Zuloaga Limestone contact, Laguna Verde, 65 253, 256, 260, 268, 272, 275, 283 Lajas Palo Verde, 184 279, 283, 289, 291, 294, 296, La Laguna, 170 Lake Chapala, 96 299, 309, 318, 324, 331, 333, La Laja, 96 Lampacitos subbasin, 137 335, 339, 370, 377, 380, 382, La Luz, 403, 408 lapilli, lithic, 406 386, 397, 421 La Luz Complex, 407 Laredo Formation, 142 cap rock, 422 La Luz District, 403 Larrea divaricata, 109 crystalline, 422 La Luz-La Cruz area, 299 Las Adjunctas subbasion, 131, 137 marine, 195 La Luz orebody, 408 Las Animas Mine, 310, 313 reef, 167, 170 La Luz system, 407, 408 Las Bibianas deposit, 283 limonite, 202, 257, 268, 320, 341, La Luz vein, 403, 408 Las Bolas orebody, 358 347, 371, 392 La Malinche, 77, 78 Las Cocinas Mine, 275 La Mina Unit, 370 Las Cumbres, 64 Lista Blanca Formation, 147 La Minita borite deposit, 335 Las Derrumbaderas, 15, 78 lithium, 32, 412 genesis, 33 3 Las Derrumbaderas geothermal zone, Llano Grande, 99 geology, 333 17 Lolotla, Hidalgo, 315 reserves, 336 Loma Blanca fault, 84, 85, 90 La Minita mine, 333 Las Espinas Formation, 296, 298 Loma de Plata Formation, 261 La Mixteca coal basin, 142 Las Espinas volcanics, 298 Lomo de Toro mine, 295 coal deposits, 146 Las Frajüitas sector, 151 Los Ajolotes, 65 coal reserves, 147 Las Hormigas, 284 Los Amóles deposit, 164 stratigraphy, 144 Las Huertas, 142, 147 Los Amóles project, 164 La Mula Formation, 131 Las Lupes area, 280 Los Angeles mantos, 257 La Mula Island, 131 deposit, 283, 285 Los Azufres, 15, 64 La Negra facies, 291 Las Margaritas deposit, 162 drilling, 71 La Negra Member, 299, 305 Las Minas, 79 fault, 67 La Negra mine, 291 Las Minas Copper, 354 geochemistry, 68 La Negra mining unit Las Planillas dome, 100 geothermal field, 59, 74, 100 geology, 291 Las Rusias anticline, 137 geothermal model, 71 mineralization, 291 Las Torres-Cedros Mine, 405 Los Azufres Lagoon, 65 La Negra orebody, 291, 294 Las Torres Mine, 405, 406 Los Azules Mines, 272, 274 La Oliva mine, 177 Las Trancas Formation, 291, 296 Los Balcones, 295 La Paz Anticline, 298 Las Tres, 20 Los Clarines Mines, 267 La Paz isthmus, 181 Las Truchas, 339 Los Conejos fault, 84 La Página Mine, 275 iron deposits, 339, 342 Los Humeros, 15 La Peña Formation, 115, 131, 253, Las Vacas, 146 fault, 84, 85, 89 Las Vacas Canyon, 134 geology, 80 279, 283 latites, 195, 219, 298 geothermal field, 77, 87, 88, 89, 90 La Peregrina, 404 dikes, 301 Los Libres Mine, 275 La Pez-1, 1 lava, 63, 64, 78, 95, 96, 98, 147, 180, Los Potreros caldera, 83 La Pimiento Formation, 131 197, 218, 270, 406 Los Tejocotes region, 329 La Pirita orebody, 356, 358 aphanitic, 98 Loseros Formation, 406 La Preciosa mine, 164 dacitic, 63 Louann Salt Formation, 417 La Prieta, 253, 367 domes, 98 Lower Fossiliferous Limestone La Prieta chimney, 256 flows, 62, 78, 98, 151, 170, 229, Member, 241, 248, 251 La Prieta fault zone, 361 298, 356, 382, 406, 407 Lucifer mine, 177 La Prieta Mine, 355, 361 pre-Tala rhyolitic, 98 La Prieta Oreshoot, 356 southeast arch, 99 Maconi Mining District, 291 La Primavera, 15 Lágrima Formation, 241 macrofossils, 261

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magma, 99, 284, 327 metallic elements, 245 mines acid, 240 metallogenic belts, 175 Baja California Norte, 177 magmatic chambers, 19 metallogenic provinces, 173,175 Baja California Sur, 177 magmatism, 170,298, 347, 385 metallurgical processes, 402 Bolaflitos, 413 magnesium, 32, 41, 412 Metamorphic Rocks Project, 373 Buena Tierra, 241, 244 magnetite, 214, 245, 247, 254, 310, metamorphism, 149, 210, 232, 269, Canutillo, 201 320, 331, 335, 341, 346, 349, 272, 275, 284, 351, 373, 377 Capsa-Regenerador, 370 390 metarhyolites, 373 Cata, 403 magnetometry, 86 metasediments, 384 Cebada, 405, 412, 413 malachite, 202, 268, 328, 392 metasomatism, 184, 210, 272, 274 Concordia, 295 Maltrata Formation, 80 Mexicali Valley, 16, 20, 23, 28, 30, El Arco, 177 Manatí dome, 419 36, 51 El Boleo, 177, 195 manganese, 177, 195, 196, 241, 248, Mexican Geosyncline, 131, 279 El Cristo, 159 264, 318, 319, 381 Mexican Neovolcanic Belt, 96 El Fenomeno, 177 manganese dioxides, 320 Mexican Plateau, 296 El Mezquite, 164 manganese oxides, 196, 328, 387, Mexican Volcanic Belt, 15, 18, 62, El Monte, 299 400 77, 105 El Nopal, 152 mantos, 240, 241, 244, 247, 251, eastern boundary, 78 El Realito, 288 252, 257, 262, 263, 280, 294, Mexico Coastal Plain Physiographic El Refugio, 237, 288 309, 335, 349, 351, 356, 358, Province, 109 El Tigre, 177 360, 387, 389 Mexico Salt Basin, 416, 422 El Triunfo, 177 Maravatío-Jerécuaro Valley, 66 Mexiquillo, 210 Fresnillo, 383 marble, 80, 147, 253, 257, 384, 406 Mezcala Formation, 80, 291 Fresnillo Beleña, 383 marcasite, 263, 274, 275, 380, 392, mica, 84, 349 Gochico, 205 412 Michoacan, 3, 15, 59, 63, 159, 333, gold, 267 Marine Aguja, 157 339, 357, 365 Golondrina, 379 marine currents, 190 fault, 41 Gradenza, 360 marine limestone, 195 micrites, 260, 261 Guadalupe, 201, 295, 370, 379 marine transgression, 133 microfossils, 180 Guanajuato, 404 Maritaro, 64, 65 microseismicity, 41, 86 Guerrero, 379 Maritaro module, 72 Midway Group, 114 Hacienda Grande, 383 marls, 80, 135, 144, 145, 146, 167, Miguel Hidalgo fault, 299 Hacienda Proaño, 383 267, 296, 385 Mil Cumbres Sierra, 66 iron, 354 marmatite, 247, 263, 294, 390, 400 Milagros area, 297 La Blanca, 275 martite, 341 Mina de Agua, 267 La Bufa, 284, 285 Mastaloya caldera, 83 Mina del Pedregal, 379 La Cruz, 295 Mastaloya fault, 84, 90 Mina El Muerto area, 157, 159 La Encantada, 256 matildite, 284, 390 Mina Morelos ore deposit, 283 La India, 275 Maverick County, Texas, 107, 114, Mina Nueva system, 408 La Minita, 333 127 Mina Vieja dike, 244 La Negra, 291 Mazapil, Zacatecas, 146 Mina Vieja system, 408 La Oliva, 177 Mazatepec, 79 Minas del Oro, 356, 358, 360 La Página, 275 McNight Formation, 128 Minatitlan dome, 419 La Preciosa, 164 Medio Balsas basin, 66 Mineral Real de Angeles, 395 La Prieta, 355, 361 Melchor Ocampo, Michoacán, 339 mineralization, 105, 199,201,218, La Salvadora, 159 Mellado Mine, 403 247, 256, 262, 283, 289, 294, La Torres, 407 melting, partial, 27 302, 331, 353, 377, 399 La Trinidad 284 melts, 65 hydrothermal, 385 La Valenciana, 403, 407 Menchaca Formation, 131 phosphorite, 397 Las Animas, 310, 313 Méndez Formation, 80, 135 radioactive, 397 Las Cocinas, 275 mercury, 381 sulfide, 225 Las Torres, 405, 406 Mesa Cartujanos, 135 mineralogy, 236, 300 Las Torres-Cedros, 405 Mesa Central physiographic province, hydrothermal, 104 Lomo de Toro, 295 384, 396 minerals, 195,205,403 Los Azules, 272, 274 Mesa de La Sanguijuela, 147 alteration, 104 Los Clarines, 267 Mesa de Tenayac basalts, 374 clay, 65, 104 Los Libres, 275 Mesa de Tizapa, 374 ferromagnesian, 254, 386 Lucifer, 177 Mesa del Corazón, 357 gangue, 392 metallic, 173 Mesa El León dome, 98 hydrothermal, 28 Morelos, 280, 285 Mesa El Nejahuete dome, 98 hypogene, 200 Naica, 259 Mesa La Lobera dome, 98 metallic, 5, 240 Naricero, 358, 360 Mesa Santa Rosa, 96 noncommerical, 225 nonmetallic, 173 Meseta Central physiographic nonmetallic, 5, 240 Noria de San Pantaleón, 237 province, 406 opaque, 254, 309 Pachuca, 237 Meseta del Norte physiographic radioactive, 11, 164, 349 Pachuqueño, 370 province, 356 rare, 194 Pegaso asbestos, 345 mesostasis, 386 selenium, 412 Peregrina, 407, 408, 412, 413 metaconglomerates, 315 uranium, 162 Porfirio Díaz, 275 metagranites, 344 See also specific minerals Potosí, 241, 252, 283

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Proaño, 383 Morelia fault, 28 producing areas, 2 Rayas, 403 Morelia-Queréndaro Valley, 66 reserves, 2 Real de Angeles, 395, 396 Morelos Mine, 280, 285 Ojinaga Basin, 134, 155 Reina del Cobre, 272, 274, 275, 278 Morita Formation, 150 coal reserves, 157 Remedios, 379 Mortoniceras leonense, 261 stratigraphy, 155 Río Escondido, 109 Mother Vein, 403 Ojo de Agua, 137 Sabinas, 237, 238 mud pots, 32 olivine, 272 San Antonio, 241, 244, 245, 252, mudstone, 27, 114, 134 Olmos Formation, 4, 110, 112, 117, 379 Murial Formation, 150 119, 127, 128, 133, 134, 151, San Diego, 275, 283 muscovite, 377 157 San Femando, 295 Múzquiz anticline, 138 Olmos Station, 112 San Francisco, 383 myrargirite, 325 Olvido Formation, 131 San Francisco del Oro, 267 ooze, 184, 190 San Hilario 177 Naco township, 149 opal deposit, 354 San Isidro, 275 Naica, 240 opaque minerals, 309 San Juan de la Costa, 177, 236 caves, 261 opencast mining, 395 San Martin, 233, 236, 237 fault, 261 ophiolite complex, 347 San Sebastián, 285 mineral deposits, 259 Ophiomorpha, 112 Santa Domingo, 177 Naica Mine, 259 Opuntia ficus indica, 109 Santa Eulalia, 280 Naricero Mine, 358, 360 Orizapa Formation, 80 Santa Fe, 327, 331 Naricero orebody, 358, 360 orogenesis, 150 Santa María, 272, 275, 278 national hydroelectric plan, 7 Ostrea, 150, 155 Santa Rita, 177, 295 naumannite, 412 coquinas, 145 Santa Rosalia, 177 Nava, Coahuila, 109, 129 glabra, 114 silver, 267 Nava plant, 4 saltillensis, 134 Sirena, 403 Navarro Group, 135 sp., 318 Socorredora, 359 Negra chimney, 294 Otatera Formation, 144, 145 Tatatile iron, 354 Neithea texana, 261 Otates, 210 Tejocjotes, 329 neotacite, 202 Otozamites, 315 Tembabiche, 177 Neovolcanic Axis Metallogenetic outcrops, Monterrey Formation, 179 Tepeyac, 403 Province, 324, 353, 365 Ov alios, 134, 138 Terneras, 278 Nerinea, 144 Ovallos anticline, 137 Tiro General, 283, 284, 285 nickel, 196 overflows, basalt, 148 Torres, 412 Nivel del Cobre ore, 328 oxidation, 272, 400 Torres-Cedros, 413 nonclastic processes, 184, 190, 191 oxides, 65, 73, 104, 196, 251, 335, Valenciana, 412 Nopal Formation, 152 345, 346 Zacatecas, 403 Nopal I deposit, 162 Oyameles dome, 78 Mining Metallurgie Production Nopalapa dome, 415, 522, 523 oysters, 131 Project, 162 Nopalapa well, 420 mining industry, J Nopalito, 65, 68 Pachuca District, 323, 325, 395 Miocene, 14 Noria de Angeles Municipality, Pachuca Group, 298 M ir if usus sp., 385 Zacatecas, 395 Pachuca mine, 237 Mixtepec area, 142, 145, 147 Noria de San Pantaleón mine, 237 Pachuca-Real del Monte Mining models Norma Conglomerate, 164 District, 323 Cerro Prieto geothermal field, 23 Norte dome, 419 Pachuqueño Mine, 370 geochemical, 88 North American trough, 24 Padilla Formation, 131 geothermal, 71,90 Northern Central Mesa physiographic Pajaritos dome, 419 SHAFT-79, 48 province, 151 paleochannels, 135 Molango, Hidalgo, 315 Northwest block, 302 paleogeography, 180 Molango Manganese District, 315, nsutite, 320 regional, 115 321 nuclear energy, 4,161 paleomagnetism, 86 molybdenite, 199, 201, 263 nuclear fuels, 4 paleotectonics, 180 molybdenum, 162, 201, 202 Nueva vein, 283 Paleozoic, 145,147 Monclova, 131 Palmillas District, 267 Monclova Basin, 110 Nuevo León, 129, 135, 139, 159, 162 Palo Verde limestone, 184 Monclova Limestone, 131 Panga de Abajo, 37 Monclova subbasin, 131, 137 oases, 180 paragenesis, 236,284,400 Montaña fault, 261 Oaxaca, 20, 142, 159, 164, 167, 329, paraguanajuatite, 412 Monterrey Formation, 179, 180 331,349 Parathyridina, 145, 146 facies, 186 Oaxaca Highland subprovince, 142 Parral Chicuahua, 240 lithology, 181 Oaxaca Peninsula, 343, 347 Parral District, 267 outcrops, 179 Oaxaca sedimentary basin, 145, 146 Parral Formation, 267 prospects, 191 obsidian, 63 Parral Super district, 267 stratigraphy, 179 Ocampo, Coahuila, 253 Patanellium sp., 385 structure, 179 oceanic crust, 385 Patámbaro anticline, 59 montmorillonite, 387, 412 Ocotepec domes, 78 Pathé, Hidalgo, 15 Montosa, Durango, 164 oil, 1, 8, 170 patio process, 404 montronites, 412 fields, 1 Patrocino orebody, 358 monzonite, 298, 299, 339 industry nationalization, 1 payonite, 390 in situ development, 112

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Pájaros Azules anticline, 138 hydroelectric, 3, 8 pull-apart basin, 28, 38 Pátzcuaro fault, 28, 41 hydropower, 3 pumice, 63, 85, 98, 195 pearceite, 412 Nava, 4 pumice pyroclastics, 96 peat depositó, 119, 120, 159 Peregrina Mine, 404 pumicite, 189, 283 pectolite, 345 thermoelectric, 7 pumite, 196 Pedregal dome, 419 Pliocene, 114 pyrargirite, 245, 248, 325, 380, 412 Pegaso asbestos deposit, 343, 346 pluton, 201 pyrargirite-proustite, 391, 392 Pegaso asbestos mine, 345 POISE (Programa Obras e Inversiones pyrite, 65, 73, 84, 104, 196, 199, pegmatites, 349 del Sectorn Eléctrico), 8, 14 201, 214, 218, 236, 247, 254, pelecypods, 114, 155, 280 pollution, environmental, 8 257, 261, 263, 274, 294, 299, Peña Ayuquila, 159 polybasite, 218, 380, 391, 412 309, 319, 335, 341, 358, 360, Peña Blanca, 162 polybasite-arsenopolybasite, 392 363, 367, 375, 380, 387, 390, Peña Blanca project, 164 polymetallic deposits, 243, 331, 353, 392, 400, 408, 412 Peña Blanca Ranch, 151 381 crystals, 223, 318 Peñoles deposit, 162 ponding, 135 disseminated, 254 Peñoles fault, 244 Porfirio Díaz mine, 275 pyrite-chalcopyrite, 201 Peñón Blanco, 397 porosity, 47, 52, 72, 73, 91, 115 pyrite-marcasite, 245 percolation, 30 porphyry, 254 pyritization, 299 Peregrina-El Cubo area, 403 quartz-monzonite, 387 pyroclastics, 64, 95, 99, 146, 324, Peregrina Mine, 403, 407, 408, 412, rhyolite, 244, 357 353 413 potassic alteration, 201 pumice, 96 plants, 404 potassium, 32, 412, 420 pyrolusite, 196, 320, 346 peridotites, 347 potassium feldspar, 201, 261, 283, pyroxene, 341 Perla, Durango, 164 301 pyrrhotite, 214, 235, 236, 247, 263, perlite, 196 Potosí dike, 244 274, 275, 294, 302, 310, 390, permeability, 47, 51, 52, 72, 84, 90, Potosí Mine, 241, 252, 283 392, 400, 412 104, 115, 313 Potosí vein, 251 Permian, 315 Potrero de Tanila, 339 quartz, 65, 73, 84, 104, 137, 145, Petróleos Mexicanos, 2 power generation, 124, 129 199, 201, 218, 227, 236, 245, Phasianella sp., 145 development, 7 247, 261, 263, 267, 272, 274, phenocrysts, 63, 78, 96, 231, 272 Poza Rica, 1 283, 299, 309, 315, 320, 324, andesite, 272 Pozo fault, 283 329, 335, 341, 344, 358, 360, feldspar, 386, 387 Pozo Hediondo, 65, 68 366, 375, 380, 386, 390, 400, plagioclase, 361, 365 Precambrian, 315 406, 408, 412 quartz, 357 precipitation, 66, 99, 109 amethyst, 225 phlogopite, 199 chemical, 184 breccia, 210, 214 phosphate, 186 prehnite-pumpellyite, 370 crystals, 63 phosphate rock prospects, 179 Presidio County, 107 quartz diorite, 201, 339 phosphorites, 177, 184, 186, 189, Principal fault, 283 quartz-feldspar, 349 190, 191, 397 Proaño Group, 385,387,390 quartz-latite, 275, 358 phosphorous, 349 Proaño Mine, 383 quartz monzonite, 96, 195, 199, 366 phyllites, 145, 279, 343, 344, 357, production quartz phenocrysts, 357 358, 373, 374, 384 gold, 323, 326, 405 quartz-sericite alteration, 366 graphitic, 373 silver, 251, 323, 326, 370, 380, quartz veinlets, 223 physiographic provinces, 109 393, 405 quartz veins, 145 physiography, 109,139, 142, 147, Programa Obras e Inversiones del quartzite, 145, 148, 149, 199, 384 149,151,155,259, 296, 356 Sectorn Eléctrico. See POISE cobbles, 187 Pichucalco, Chiapas, 327 Prohystoceras, 261 pebbles, 186 Pico de Orizaba, 77, 78 projects Quaternary, 133,136,149,170, 387 Pico de Orizaba-Cofre de Perote Range, Chicoasén hydroelectric, 10 Quercus candinas, 369 78 hydropower, 9 Querétaro, 291, 381 Piedras Negras, 109 José-López Thermoelectric Power Quinto mantos, 263 Pilares de Nacozair Chimney, 197 Station, 109 Pimienta Formation, 80, 84, 318, 320 La Coma, 164 radioactive mineralizations, 397 Pinar de la Venta dome, 98 Los Amóles, 164 Ramón Corona fault, 261 Pinito, Durango, 164 Metamorphic Rocks, 373 Rancho General, 142, 147 Pinos area, 397 Peña Blanca, 164 Rancho San José area, 155 Pinta Sierra, 24 UF-1, 165 rare earths, 5 Pinus ocote, 369 propylitization, 272, 299, 371 Rayas Mine, 403 pitchblende, 161, 162 Prosopis juliflora, 109 Real de Angeles deposit, 395 plagioclase, 63, 78, 231, 254, 301, proustite, 325, 380, 412 geology, 395 307, 386 proustite-pyrargirite, 257, 360 paragenesis, 400 crystals, 137, 406 Providencia vein, 387 Real de Angeles Mine, 395, 396 phenocrysts, 361, 365 pseudoboleite, 196 exploration, 401 plants Pseudodictyomira sp., 385 production, 402 back-pressure, 75 Puebla, 15, 77, 80, 159 smelter productivity, 402 coal-fired power, 4, 129 Puerto de Cabras Sierra, 59 Real del Monte area, 325 cyanide-process, 404 Puerto del Angel, 298 Recent, 146 geothermal power, 12, 15 Puerto EI deposit, 162 recharge, 33, 35, 48, 51, 66, 170

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red tide, 190 rocks Sabinas-Reynosa Formation, 110, 128 redbeds, 146, 406, 417 acid, 80, 269, 344, 358 Sabinas subbasin, 131, 137 reef limestone, 167, 170 acid extrusive, 161 Sacramento anticline, 137 regression, 140, 147, 229 andesitic, 66, 77, 95, 99 St. Thomas District, 107 marine, 115, 117, 144, 170 batholithic, 24 Salinas Formation, 416, 417 Reina del Cobre Mine, 272, 274, 275, calc-alkaline, 63 salinity, 52, 383, 401 278 calcareous, 241 Salmon Peak Formation, 128 Reineckia sp., 318 carbonate, 283, 284, 320 salt, 420 Remal-Ibarra vein, 233 extrusive, 24, 146, 218, 283, 384 age, 417 Remedios Mine, 379 host, 65, 170, 199, 218, 261, 272, movements, 417 reserves 298, 313, 331, 349, 356, 361, tectonics, 418 coal, 157 374, 399 Salt Basin, southeast Mexico, 416 copper, 196, 327 hot, 73, 90 Salt Basin domes, 415 geothermal energy, 3 igneous, 24, 79, 86, 88, 146, 155, salt domes, 1, 417 gold, 328 164, 197, 218, 229, 231, 254, origin, 419 iron ore, 342 261, 272, 283, 299, 318, 344, Saltillito-Lampacitos subbasin, 131, lead, 399 345, 377, 396, 397, 406 17 oil, 2 intrusive, 20, 146, 148, 164, 201, Saltillito subbasin, 137 silver, 327, 328, 394, 399 244, 254, 384, 397, 407 San Agustín Mine, 283 titanium minerals, 351 marine, 296, 395 San Alejo, 64, 65, 68 uranium ore, 4 metamorphic, 20, 59, 79, 145, 146, San Alejo fault, 67 zinc, 399 147, 148, 164, 197, 229, 232, San Andreas System, 20 resistivity, 67, 72, 84, 86, 100 240, 253, 254, 272, 315, 339, San Andrés dacite, 63 Rey de Plata deposit, 377 343, 344, 349, 373,377, 396 San Andrés Tuxtla Massif, 419 rhodochrosite, 320 metasedimentary, 370 San Antonio dike, 247 Rhus exima, 109 metavolcanic, 370 San Antonio Mine, 241, 244, 245, rhyodacites, 161, 358 phosphate, 165 252, 379 rhyolites, 20, 24, 161, 197, 199, 218, post-batholithic, 24 San Bartolo Shaft, 285 219, 244, 267, 275, 283, 288, pre-batholithic, 23 San Bernabé vein, 403 289, 324, 335, 336, 357, 358, pyroclastic, 167, 386 San Buena Formation, 133, 136 361, 377, 386, 406 reservoir, 65 San Carlos, 107, 240 aphanitic, 98 schistose, 59 San Cristóbal dome, 415, 419 dikes, 245, 267, 283, 324, 385 sedimentary, 3, 15, 20, 30, 47, 51, San Diego body, 269 domes, 17, 63 79, 88, 90, 95, 136, 146, 148, San Diego de Minas Nuevas, 267 flows, 63, 96, 231, 244, 397 150, 152, 161, 164, 229, 239, San Diego mine, 275, 283 La Yerbabuena glassy, 63 253, 259, 272, 299, 339, 343, San Dimas District, 219 porphyry, 244, 357, 359 344, 358, 373, 377, 380, 385, San Felipe, 298 products, 78 395, 406 San Felipe Formation, 80 tuffs, 358, 359, 386, 397 siliceous, 397 San Fernando mine, 295 Riito, 15 volcanic, 14, 15, 17, 19, 71, 80, San Francisco del Oro mine, 267 Riito anomaly, 16 86, 90, 95, 167, 195, 197, 199, San Francisco del Oro Mining District, Rio Acalpica, 339 201, 241, 244, 269, 289, 291, 267 Rio Ameca Valley, 99 296, 335, 344, 357, 373, 377, San Francisco Mine, 383 Rio Bravo area, 141 385 San Francisco Oaxaca, 349 Rio Bravo Basin, 128 rodingsites, 347 San Francisco orebody, 253 Río Caliente, 99, 100 Rosario anticlinoria, 269 San Francisco vein, 257, 283, 285 Río Caliente fault, 98 Rosario dome, 419 San Hilario area, 179 Río Escondido Rosario Formation, 146, 147 San Hilario mine, 177 coals, 120 Rosario vein, 387 San Isidro Formation, 146, 179, 180 deposit, 4 Rosita, Coahuila, 4 San Isidro mine, 275 development, 129 rudists, 131, 144, 146, 335 San Jerónimo, 138 exploration, 129 runoff, 8 San Joaquin Member, 299, 305 reservoir, 127 rutile, 349 San José anticlinoria, 269 Río Escondido Basin, 131 San José area, 257 Rio Escondido Mine, 109 Sabinal Formation, 146 San José orebody, 253 Rio Escondido Project, 114, 119, 128 Sabinas Basin, 114 San José Volador Anticline, 298 Rio Grande de Santiago Canyon, 95 Sabinas coal region, 114 San Juan area, 257 Rio Grande Embayment, 142 Sabinas Conglomerate, 136 San Juan breccia, 368 Rio Grande rift, 170 Sabinas District, 131 San Juan Complex, 96 Rio La Cañada, 339 coal deposits, 136 San Juan de la Costa, 165 Río Las Truchas, 339 reserves, 138 San Juan de la Costa mine, 177, 236 Río Sabinal, 146 stratigraphy, 133 San Juan Mixtepec, 165 Rio Salado dome, 98 Sabinas Gulf, 131 San Juan sector, 151 Río Salado Valley, 99 Sabinas Mine, 237, 238 San Lorenzo, 272 Río San Isidro, 146 Sabinas-Monclova Coal District, 136, San Lorenzo anticlinorium, 269 Rio Santa María, 287, 289 137 San Luis breccia, 368 Río Tala, 99 Sabinas-Noria de San Pantaleón, 236 San Luis Potosí, 1, 159, 240, 261, Río Tlaxiaco localty, 146 Sabinas-Reynosa Conglomerate, 114, 279, 381, 395 Río Tolimán canyon, 298 117, 119, 127, 128 San Luis Potosi foundry, 295

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Santa Rosa vein, 283 Sierra group, 404 119, 121, 127, 128, 133,157 Santa Rosalia, 195 Sierra Guanajuato Gorda, 291 members, 134 Santa Rosalia copper district, 196 Sierra La Bartole, 136 San Miguel Ocaxichitlán, 159 Santa Rosalia Formation, 195 Sierra La Encantada, 254 San Miguel Ranch, 112, 133 Santa Rosalia mine, 177 Sierra La Escondida, 152 San Nicholás, 387 Santiago Formation, 80, 318 Sierra La Giganta, 179 San Nicolás mineworks, 403 Santiaguillo fault, 267 Sierra La Gloria, 137 San Pascual vein, 387 Santo Domingo, 164 Sierra La Laja, 95 San Patricio chimney, 263 Santo Tomás seam, 141, 142 Sierra La Lista Blanca, 147 San Patricio subbasin, 131, 137, 138 Sara Alica, 210 Sierra La Primavera, 95, 98 San Pedro Corralitos, 134 Sardinas, 124 Sierra La Vasca, 253 San Pedro Corralitos Basin, 151,153 Sauceda de Multaos, 397 Sierra Madre de Oaxaca physiographic San Pedro fault, 386 Saucillo, Chilhuahua, 255 province, 349 San Pedro Formation, 80 scheelite, 263, 301, 367 Sierra Madre del Sur, 167, 339 San Pedro seam, 141 schirmerite, 284 San Próspero, 408 Sierra Madre del Sur geothermal San Pueblo Huitzo, Oaxaca, 349 schists, 79, 146, 240, 331, 343, 344, province, 20 San Rafael anticline, 283, 309 346, 373, 377, 380 Sierra Madre del Sur metallogenic San Rafael anticlinorium, 279 muscovite, 374 province, 331, 379 San Rafael Valley, 279 scoria, 78 Sierra Madre del Sur physiographic San Rafael vein, 225 sea-floor spreading, 79 province, 142, 343, 369, 373 San Ricardo fault vein, 387, 391 sedarenite, 386 Sierra Madre Limestone, 170 San Salvador subbasin, 131, 137, 138 sedimentation, 79, 140, 184 Sierra Madre Occidental, 3, 15, 19, 95, San Sebastián Mine, 285 sediments, 142, 241 164, 167, 219, 339, 358 San Sebastián vein, 283 clastic, 170, 269 Sierra Madre Occidental geothermal sands, 27, 63, 115, 133, 136, 139, continental, 157 province, 19 149, 164 fluvial, 96, 119 Sierra Madre Occidental metallogenic flows, 96 marine, 157, 179 province, 19, 215 tar, 112, 127 pelitic, 377 Sierra Madre Occidental physiographic sandstones, 27, 28, 30, 44, 46, 59, volcaniclastic, 241, 244 province, 149, 197, 229, 296 80, 95, 110, 112, 117, 134, 136, Segundo mantos, 263 Sierra Madre Occidental sequence, 218 140, 142, 145, 148, 150, 155, seismics, passive, 67 Sierra Madre Oriental, 77, 79, 296, 162, 164, 170, 195, 210, 244, selenides, 412 298, 324, 325 261, 267, 269, 279, 315, 318, selenium minerals, 412 Sierra Madre Oriental geothermal 329, 335, 344, 358, 370, 377, Senguio region, 59 province, 20 385, 399, 406 sericite, 104, 145, 199, 201, 223, Sierra Madre Oriental limestones, 382 Sangangiiey Complex, 96 299, 357, 358, 359, 375, 411 Sierra Madre Oriental metallogenic Sangrita basin, 269 sericitization, 299, 371 province, 239, 241, 261, 269, sanidine, 406 serpentine, 320, 344, 345 279, 291 Santa Agueda fault, 195 Serranía del Burro, 110 Sierra Negra, 78 Santa Ana Maya Valley, 66 SHAFT-79 program, 48, 52 Sierra Peña Blanca, 162 Santa Ana Member, 218 shales, 27, 30, 45, 59, 80, 95, 110, Sierra Rica, 157 Santa Bárbara District, 267 114, 127, 135, 137, 139, 141, Sierra San Marcos, 96 Santa Catarina, Tayata, 164 144, 146, 148, 150, 152, 155, Sierra Santa Eulalia, 241 Santa Domingo mine, 177 162, 167, 184, 186, 189, 210, Sierra Santa Rosa, 138 Santa Elena, 210 229, 231, 253, 261, 267, 269, Sierra Santo Domingo, 241 Santa Elena vein, 391 279, 283, 296, 298, 315, 329, East Field, 241, 244, 245, 252 Santa Eulalia, 240 335, 358, 360, 370, 380, 385, West Field, 241, 244,247, 252 Santa Eulalia Mine, 280 390, 406, 420 Sierra Soledad, 219 241, beds, 387 Santa Eulalia mining district, 261 bituminous, 146 Sierra Tapalapa, 95, 96 pebbles, 135 Sierras Atravesadas, 269 silver production, 251 shark teeth, 186 Sierras de Santa Maria, 272, 275 Santa Fe mine, 327, 331 siderite, 229, 390, 412 Sierras La Rota, 134 reserves, 328 Sierra Aconchi, 164 Sierras Múzquiz, 138 Santa Gertrudis anticline, 137 Sierra Arteaga, 339 Sierras Tezompa, 79 Santa Gorgonia area, 298 Sierra Capulin, 142 silica, 32, 46, 63, 78, 105, 127, 184, Santa Inés Foramtion, 136 Sierra Chilicote, 254 186, 210, 264, 329 Santa Isabel vein, 283, 285 Sierra Cobachi, 147 silicates, 196, 245, 247, 262, 263, Santa María de La Paz district, 261 302, 309, 345, 346, 347, 412

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silicification, 180, 272, 299, 371, springs, sulfur, 17 Tamulipas, 159 411 stannite, 363 Tancamichapa dome, 419 sills, 245, 261 stephanite, 412 Tancamichapa Island, 417 andesitic, 151 stibnite, 236, 284, 329, 380 Tapalapa, 96 silts, 27, 117, 135, 136, 149 stocks, 150, 197, 199, 201, 219, 272 tar sands, 112, 127 siltstones, 27, 80, 110, 112, 114, granite, 407 Taraises Formation, 115, 131, 279, 134, 135, 137, 141, 145, 146, stockworks, 387,408 283 150, 151, 253, 269, 318, 344, stratigraphy, 63, 79,110,119,133, Tatatile iron mines, 354 345, 358, 385, 399 140,144,147,150,151,155, Taxco deposits, 331 silver, 177, 196, 218, 227, 237, 240, 241,253,259,279,296, 357, Taxco mining district, 379 244, 251, 263, 265, 268, 272, 370, 384, 385, 396, 406 Taxco-Zitacuaro Massif, 380 275, 284, 286, 294, 299, 304, stratovolcanoes, 63, 77, 83 Taylor Group, 110 309, 313, 323, 325, 328, 331, stromeyerite, 225, 284, 335, 359 Tayoltita Mine, 219 333, 335, 337, 353, 356, 363, strontium, 284 Teapa, Chiapas, 327 371,373, 375, 377, 379, 389, subduction, 24, 62, 95, 96, 177 Tecocoyunca Beds, 145 391, 395, 400, 404, 408, 412, sublithoarenite, 386 Tecocoyunca Group, 144, 145 414 subsidence, 36, 40, 133, 140, 181, Tecolote dike, 299 belt, 395 279 Tecomate-La Escondida area, 301 deposits, 219 sulfates, 32, 248, 335 Tecomatlan, 159 melted, 403 sulfide group, 299 Tecomatlan Conglomerate, 344 mines, 267 sulfide zone, 196, 245 Tecomatlan deposit, 159 native, 225, 236, 248, 257, 325, sulfides, 201, 214, 225, 237, 245, tectonics, 3, 62,150, 210, 288, 385 371, 387, 392 247, 248, 249, 251, 261, 274, regional, 24, 79 production, 251, 323, 326, 370, 295, 301, 302, 335, 336, 375, salt, 418 380, 393, 405 377, 390, 400, 412 tectonism, 19, 79, 146, 152, 157, reserves, 327, 328, 394, 399 disseminated, 358, 360 180, 269, 272, 318, 319 sulfosalts, 387 lead, 366 Tehuacan fault, 261 veins, 391 massive, 236, 251, 262, 263, 301, Tehuantepec Isthmus, 1 Silvia chimney, 294 310, 353, 358, 360, 363, 373 Tehuichila, 159 Simón Formation, 145, 147 mineralization, 225 Tehuilo tepee, 379 Sirena mine, 403 ores, 265 Tejaluca deposit, 159 skarn, 80, 210, 253, 257, 261, 262, polymetallic, 373 Tejamaniles, 65, 67, 68, 74, 75 291, 313, 339, 341 veins, 391 Tejocjotes mines, 329 slates, 27, 406 sulfosalts, 310, 412 Tejon sector, 349 smithsonite, 245, 257, 284 sulfur, 196, 240, 264, 421 Telixtlahuaca, Oaxaca, 349 Snake Ridge Formation, 150 bacteria, 421 Telluric method, 66, 86 Socavón Member, 299 cap rock, 422 Tembabiche mine, 177 Socorredora Mine, 359 deposits, 415 Temexalaco, 159 Socorredora orebody, 358 exploration, 415, 422 temperature, 89, 99, 109, 301, 393 soils, 63, 136 origin, 421 bottom, 71, 105 development, 135 springs, 17 Tempoal, 159 steaming, 84, 87 syenites, 77 Tenamastepec zone, 86 Soledad dome, 419 Tenexpan sector, 349 Solosuchiapa, Chiapas, 327, 331 synclines, 137, 138, 152, 190, 239 Tepehuacan, Hidalgo, 315 Sombrerete, Zacatecas, 229, 383, 396 Tepetates Formation, 179, 180, 186 Sonora, 147,149,164, 167, 199, 201 Tabasco, 1 Tepexic Formation, 80, 318 Sonora Desert, 20 Taberna Foramtion, 144, 145 Tepeyac Mine, 403 Sonora Desert physiographic Tacasneque, 159 Tepezala-Asientos district, 395, 396, province, 147 tactites, 236, 241, 249, 254, 257, 406 397 Sonora-Sinaloa Sierras geothermal Tajo sites, 127 Tepic-Chapala graben, 96 province, 230 Tala Tuff, 98, 101, 104, 105 Teposcolula Limestone Formation, Sosola Formation, 344 talc, 240, 345, 346 144, 146 Southeast block, 302 Talpa de Allende Municipality, Jalisco, Tequila complex, 96 Sovavón del Rey, 379 355 Tequila Volcano, 96 Soyatal Formation, 291, 296, 298 talus Tequila Volcano flow, 99 specularite, 247, 341 debris, 162 Tercero mantos, 263 spessartite, 339 deposits, 85 Temeras Mine, 278 sphalerite, 214, 218, 225, 236, 245, Tamabra Limestone, 170 Temeras vein system, 274, 275 247, 263, 274, 299, 302, 310, Taman Formation, 218 Tertiary, 133,136,146,170, 244, 328, 335, 358, 359, 360, 361, Taman Mixto, 318 296, 358, 386 363, 371, 375, 380, 387, 391, Tamanzunchale, 159 Tesist&n-Atemajac-Toluquillo aquifer, 392, 412 Tamaulipas, 139, 240 99 sphene, 301 Tamaulipas Formation, 80, 84, 131 Tetela gold deposits, 354 Sphenodiscus, 134 Tamaulipas Island, 131 tetrahedrite, 218, 236, 301, 335, 358, pleurisepta, 114 Tamaulipas Peninsula, 115, 131 363, 375, 390, 392, 400, 412 sp., 114, 135 Tamaulipas platform, 137 tetrahedrite-tenantite, 360 spherule, 63 Tamaulipeco Geoanticline, 137 tetravalent, 161 spherulites, 98 Taman Formation, 80 Tetzinda area, 320 spreading centers, 36 Tampico oil province, 1 Tetzintla pit, 318 Tampico-Misantla Basin, 135

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3733983/9780813754703_backmatter.pdf by guest on 29 September 2021 438 Index Texistepec dome, 415, 419, 423 rhyolite, 210, 244, 386, 406 development, 71, 73 Teziutlán, 77, 80 Tala, 98, 101, 104, 105 discharges, 68 Teziutlán andesites, 80 Tulecheck, 15 exploratory, 13,16, 23, 36, 71, 73, Teziutlán Formation, 80, 84 Tulecheck geothermal zone, 16, 36 89 Teziutlán Massif, 354 tungsten, 177, 265 geothermal, 28, 44, 87, 95 Tezoatlán area, 142, 145, 147 Tupilco dome, 419 geothermal fields, 13 thermal spots, 15, 17 Turritella, 150, 184 H-l-12, 84, 89, 92, 93, 104 thermalism, 65 Tuxpan region, 59 Nopalapa, 420 thermometry, 85,412 Tuzandepetl dome, 419 PR-1-5, 95, 99, 101,104 Tigres vein, 283 production, 89,104 tin, 247, 252, 376 UF-1 Project, 165 water, 5, 17 Tiro Altofault, 244 uplift, 99, 150, 269, 318, 345, 397 West Field, 241, 244, 245, 247, 251 Tiro de Rayas, 403 Upper Fossiliferous Limestone Wilcox Formation, 140, 142 Tiro General area, 387 Member, 241, 248, 251 wolframite, 247 Tiro General Mine, 283, 284, 285 Upson Formation, 110, 117, 119, wollastonite, 263, 299, 309, 327, Tiro Guanajuato, 405 132, 151 328, 397 Tiro hanging wall, 313 uranium, 4,161, 162, 194 wollastonite tactites, 272 Tiro Valenciana, 403 Uvalde Gravel, 136 wood, 135 titanium, 331, 349 worm burrows, 184 reserves, 351 Valenciana Mine, 403, 412 titanium oxide, 349 Valenciana orebody, 408 Xalapazco-Mastaloya rea, 83, 85, 86 Tizapa, Mexico, 353 Valles-San Luis Potosí Platform, 279 Xáltipan Ignibrite, 83, 84 deposits, 377 Val verde, 339 Xilitla, 159 sulfides, 373 vanadium, 194, 252, 284 Tizapa metamorphic sequence, 373, Vanquerías area, 140 Xochicoatlan, Hidalgo, 315 377 Vega Chica, 79 Tlaltepingo Dam, 318 vegetation, 109, 131, 133, 180 Yahualica, 159 Tlanchinol, Hidalgo, 315 xerophyte, 195 Yanhuitlán Formation, 146, 344 Tlapa deposit, 159 Velardeña Mining District, 261, 269, Yegua Formation, 142 Tlaxiaco area, 142, 146, 147 278 Yucatán area, 416 Tlaxiaco Basin, 145 Venustiano Carranza Thermoelectric Yucuñuti Formation, 144, 145 Tlaxiaco-Cuquila junction, 146 Project, 107 Zacatecas, 146, 229, 261, 381, 383, Tolimán canyon, 296, 298 Veracruz, 1, 77, 159 395, 396 Tomellín Canyon, 331, 343, 344 Verdosas anticline, 299 mines, 403 tonalites, 24 vertebrate remains, 186 Zacatecas Formation, 279, 397 tonstein, 137 marine, 190 Zacatepec, 77 topaz, 247 vesuvianite, 263 Zacazonapan, 373 topaz rhyolites, 247 Veta El Cobre, 280 Zacualpan, 369 Topia, Durango, 215 Veta Madre deposit, 407 Zacualpan Mining District, 369,370 Topia Andesite, members, 218 Veta Madre fault system, 407, 408 Zacualtipan, 159 Topia Mining District, 215 Veta Madre footwall, 406 Zaragoza Ignibrite, 84 Torino fault, 261 Villalpando, 408 zeolites, 65, 104 Torino-Tehuacán chimney, 263 Villalpando Vein shoots, 408 Zimapán, Hidalgo, 295, 358 Torres-Cedros Mine, 413 volcanic ash, 189 Zimapán District, 261, 298 Torres-Cedros Orebody, 405 volcanic cones, 78 deposits, 295 Torres Mine, 412 volcanic series, 19 Zimapán valley, 296 tourmaline, 199, 201, 245, 247, 366 volcanics, 241 Zinapécuaro, 59 trachyte, 272, 274, 275 volcanism, 18, 24, 38, 63, 77, 80, 96, zinc, 196, 200, 218, 225, 236, 240, Trancas deposit, 162 133, 147, 152, 157, 177, 180, 252, 264, 268, 272, 274, 286, transference, convective, 65 318, 327, 356, 358, 370, 413 304, 309, 331, 333, 335, 337, transgression, 140, 144, 147, 229, caldera, 80 353, 356, 360, 363, 371, 373, 279, 319 pre-caldera, 80 375, 377, 389, 391, 392, 395, Trans-Mexican Axis, 318 volcanoes, 63, 78 397, 400 Trans-Mexico Neovolcanic belt, 170 Cerro Prieto, 23, 24 deposits, 284 travertine, 133, 136 monogenetic, 78 reserves, 399 tremolite, 245, 254, 345, 346 mud, 17 sulfides, 335 Trest Virgenes group, 195 Tequila, 96 zircon, 315 Triassic, 210,315 Zit'acuaro region, 59 Trigonia, 150 water, 170 Zona Nueva, 85 Trinity Formation, 267 bicarbonate, 68, 87, 128 zones Tucophyllum texanus, 109 ground, 170 ferrosalite-garnet, 232 tuffs, 15, 59, 63, 80, 83, 84, 95, 147, meteoric, 320 geohydro logic, 170 164, 170, 184, 189, 190, 195, sources, 170 geothermal, 15 197, 201, 218, 272, 280, 283, sulfate, 68, 87 saccharoid quartz, 232 298, 336, 370, 377, 380, 385 wells, 5, 17 tremolite-calcite, 232 andesite, 335, 365, 407 Webb County, Texas, 107, 142 tremolite-garnet, 232 Faby, 84 wells, 42, 52, 59, 64, 84,127 Zorrillo Formation, 144, 145, 147 flows, 148, 195 Amexquite Norte, 420, 422, 423 Zuloaga Group, 131 lithic, 386 CP-I-IV, 48, 51 Zuloaga Limestone, 279, 280

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