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Home , Gold Gulch, Gold rush, Jicarilla Mountains, Placer deposit

Placergold deposits in byViginiaT. McLemore, New Mexico Bureau ot Minesand Mineral Resources, Socorro, New Mexico 87801

Abstract posits (Boyle, 1979,1987): eluvial, alluvial, and aeolian. Eluvial deposits occur in Thirty-six districts in New weathered detritus at or near the outcrop Mexico contain placer deposits. of gold-bearing lode deposits. Alluvial de- Production from thesedeposits began as posits occur in the and gravels of first gold early as 1828,resulting in the deltas. Al- produced from placer deposits through- westem States;how- streams, , beaches,and rush in the United from 1828 to 1991 (up- ever, minor production by Pueblo In- luvial deposits are further subdivided into out New Meico dians and Spaniards probably occurred classesby Wells and Wootton (1932):hill- dated fromJohnson,1972). This production 200 or more years earlier. Most placer side (valley slopes not in discrete chan- is insignificant compared to larger placers deposits were discovered by 1900,and nels), gulch or creek, bench or terrace, found in , , New Zea- almost all placer production occurred -bar, gravel-plain, and buried plac- land, and South America that contain mil- before 1902.It is estimated that 662,000 ers. The aeolian deposits accumulate in lions of ouncesof gold. Only four districts oz of gold were produced from New windblown deposits and are rela- here have yielded more than 100,000oz Mexico placer deposits between 1828and tively minor and unimportant. Most of of placer gold production: Elizabethtown- 191. The deposits typically are found the gold deposits in New Mexico are al- Baldv, Hillsboro, Old Placers, and New in late Tertiary to Recentalluvial or elu- only one district is vial deposits; deposits, bench luvial deposits, but some eluvial deposits Placers. Currently or terrace deposits, river bars, strearn are found in many districts. There are no yielding some minor production (White concentrations,and residual placersthat known aeolian gold placer deposits in New Oaks) although small exploration activi- formed directly on top of lode deposits Mexico. ties and recreationalgold panning are oc- are known. New Meico placer gold de- This report presentsa summaryof con- curring in most areas of the state. G posits are derived from Oligocene-Mi- tinuing research on placer gold deposits Margin deposits, ocene Great Plains in New Mexico. Johnson (1972)published Laramide vein deposits,and Proterozoic one of the most comprehensive compi- in highly vein and replacementdeposits placer gold de- Alsoin thisissue weathered and eroded terrains. The fu- lations of information on the ture potential will depend on discovery posits in the state. This study updates (new), work by (1972) and North and Oso RidgeMember of large-volume, low-grade deposits. fohnson Abo Formation, Also, new technologiesminimizing wa- Mclemore (1986, 1988)and incorporates p.26 ter may stimulate activity becauselack additional field observationsand other data ZuniMountains of water has hampered production in from published and unpublished reports. JeffreyA. Grambling many districts. Thirty-six mining districts containing (1953-1993) p. 31 placer gold deposits in New Mexico are Introduction located in Fig. 1 and are listed in Table L NMGS1995 field conference papers p.34 A placer deposit is any natural accu- with year of discovery and production, if mulation or concentration of a material in known. Thesedistricts are arrangedin or- NMGS1994 Spring Meeting from unconsolidated sediments of a stream, der of estimated total production abstracts p. 35 bench, or residual deposit. Four condi- placerdeposits. tions are usually required to form placer NMGS1994 Field gold deposits (Boyle, 1979, D8n. A source History and production Conference p.37 terrain must crop out, usually containing The first known production of placer Upcomingmeetings p.37 gold-bearing lode deposits or dissemi- gold in New Mexico was in 1828 in the nated gold. The source terrain must be in SantaFe County (Old Geographicnames p.37 exposed to mechanical and chemical This discovery resulted Placers district). Service/News p. 38 for a fairly long time. The free in the first gold rush in the westem United gold is concentrated, typically by gravity States (|ones, L904),predating the Cali- MineralMuseum notes p. 38 and water. Finally, the deposit must be fomia gold rush by 20 years. Before 1828, preserved. Pueblo Indians and Spanish explorers en- Staffnotes p. 39 Placer gold deposits are a result of the gaged in some mining activities, espe- Topographicmaps p. 39 physical and chemical properties of gold. cially for turquoise. Undoubtedly, some Gold is relatively heavy (specific gravity placer gold was recoveredas well (Jones, Gomingsoon of 19.3) and is easily concentrated by grav- 1904;Johnson, 1972).Placers along the Rio ity with the aid of water. Gold is resistant Grande valley were reportedly worked in Pliocenemicrofossils from to corrosion and chemical ofdation and 1600,but total production is unknown and therefore can be transported long dis- presumed small (fohnson, 1972). MonticelloPoint maar tances after being freed from the source Placergold deposits were an important Largeexogyra from Dakota rock. The bright color, luster, and softness sourceof gold in New Mexico before 1902, enable easy identification by prospectors. but placer production after 1902has been Sandstone There are three types of placer gold de- rninor (Table1; Johnson, 1972). Most placer Lack of water has hampered produc- pyroxenes, pyrite, , , , tion of placer gold deposits in New Mex- All known placer deposits in New Mex- and other minerals. The gold-bearing ico. The Big Ditch was built in 1869near ico occur in late Tertiary to Recent rocks gravels at Pinos Altos have as much as Elizabethtown to divert water from the and occur as alluvial-fandeposits, bench 4frVoblack sand containing 83Vomagnet- Red River to the placers, a distance of 41 or terrace gravel deposits, river bars, ite, 37ogarnet, 2Vohematlte, and,0.45ozl mi (Wellsand Wootton, 1932;Bauer,1990). stream deposits (alluvial deposits), or as ton gold (Wells and Wootton, 1932).The Large-scaledredges have been operated residual placers formed directly on top of ore typically occursas narrow pay streaks, with limited successin only-(1901-1903), a few dis- lode deposits typically derived from Prot- zones, or layers of fine-grained, dissem- tricts: Elizabethtown-Baldy erozoic, Cretaceous,and Tertiary source inated gold, locally on top of basement Hillsboro (1935-L9A), and Pinos Altos rocks (eluvial deposits). During fluvial rock, clay, or caliche lenses in gravel de- events, large volumes of sediment con- posits. The best placer gold is found near taining free gold and other particles are the baseof gravel deposits where the gold transported and deposited in relatively is trapped by natural processessuch as poorly sorted alluvial and stream depos- riffles in the floor of the stream, fractures its. The gold is concentratedby gravity in either in the bedrock or along bedding or panning (Figs. 2, 3). In some areas, incised stream valleys and alluvial fans in foliation planes, and structures that are trenches, short adits, and shallow shafts deeply weathered highlands. Most placer transverseto the stream flow. Gold is also were dug along the pay streaks(Wells and gold deposits in New Mexico are found concentratedabove cemented gravels and in streamsor arroyos that drain gold-bear- clay layers in the gravel deposits, which ing lode deposits,typically as veins. constrain downward migration of gold The lode deposits range in age from Prot- particles.Most depositsare thin and less erozoic to Laramide to mid-Tertiary (Ol- than 55 ft below the surface (Lindgren et igocene-Miocene)(Table 2). Thereare some al., L970;Johnson, 1972),bat thicker de- Various methods employing little or no alluvial deposits distal from any obvious posits occur in the Elizabethtown-Baldy water have been utilized periodically, but source terrains (Table2). Eluvial deposits district (as thick as 300ft; Wells and Woot- few if any of these operations were suc- are common in many districts; some of ton, 1932) and in the Rio Grande valley cessful. These and other techniques of the larger deposits are in the ficarilla dis- district (as thick as 1100ft; fones, 1904). mining placer deposits are described by trict. Native gold and electrum occur with Unfortunately, past development of most West (1971). quartz, , , amphiboles, placers in New Mexico is undocumented,

New A4exnco GEOLOGV o Scienceand Servicc tssN 0196-94AX Volume 16, No.2, May 1994

\i---J _l Editor:Carol A Hjellming Published quarterly by New Mexico Bureau of Mines and Mineral Resources a division of New Mexico lnstitute of Mining & Technology

BOARD OF REGENTS Ex-Officio Bruce King, Gwrnor of Nru Mexico Alan Morgan, Supaintendentol Publiclnstruction Appointed CATRON Diane D Denish, Prcs,1992-1997, Albuquerque Michael Kelly, SeclTreas 1992-1997, Roswll Mls, J , '':o""urF" I LINCOLN Lt Gen Lo Marquez, 1989-195, Albuquqque ur" Steve Torres, 1991-197, Albuquerque CHAVES Charles Zimmerly, 1991-1997, SNoft o New Mexico lnstitute of Mining & Technology

-1 a Roswcll Preident David H L6Dez SIERRA New Mexico Bureau of Mines & Mineral Resoures Directorand StateG@logist Charles E Chapin I 2 Sub*tiptim: Issued quarterly, February, May, August, November; subsription price $6 o0/calendaryear Editorial mttq: Articles submitted for Dublication EDDY should be in the editor's hands a minimum of five (5) months before date of publication (February, Carlsbod May, August, or November) and should be no longer a than 20 typewritten, double-spacedpages All oTERo O€laware scientific papers will be reviewed by at least two E9 Eaaln people in the apprcpriate field of study Address inquiriG to Carol A Hielmin& Fditor of Nru Meriq Ceology,New Mexico Bureau of Mines & Mineral Resources.Socono. NM 87801-4796 Publishedas public domain, thereforercWoducible uithout wrmission Soure crcdit requested Cilculation:l,6N 20 40 60 80km Printer: U^ivercity of New Mexico Printing Services FIGURE l-Placer gold deposits in New Mexico. Number refers to Table 1.

May 1994 New Mexico Geology TABLE 1-Placer production from New Mexico (modified from Johnson, 1972;North and Mclemore, 1988).Map number refers to location in Fig. 1.

Estinated Recorded Total Total M"P Year of prior to 1902--1997 estimated placer estimated lode no. Dishict Coun$r discovery 7902(oz) (ozl production (oz) production (oz) Additional references 1 Elizabethtown-Baldy Colfax 1866 225,000 25,1.67 251,000 220,400 Mclemore and North (1987),Wells and Wootton (1932) 2 Hillsboro Siena r8n 104,000 15,559 120,000 45,000 Harley (1934) 3 Old Placers Santa Fe 1828 100,000 1,558 >102,000 98,000 Elston (1957),Wells and Wootton (1932) 4 New Placers Santa Fe 1839 96,759 3,011 >100,000 77,000 Elston (1957),Wells and Wootton (1932) 5 Pinos Altos Grant 1850 38,842 5,995 50,000 100,000 Lasky and Wootton (1933),Paige (1910, 1912),Wells and Wootton (1932) 6 Hopewell Rio Aniba 1880 15,000 121 15,000 8,000 7 Pittsburg Sierra 1901 none 7,089 8,000 0 8 Jicarilla Lincoln 1850 4,500 3,020 8,000 8,000 Segerstrom and Ryberg (1974), Baker (1985),Mclemore et al. (1991) 9 Orogrande Otero 1899 400 1,546 >2,000 14,500 Schmidt and Craddock (1954) 't,700 10 White Signal and Malone Grant 1884 some 366 12,000 Richter and Lawrence (1983) 11 White Oaks Lincoln 7879 unknown 885 1,000 162,000 Griswold (1959),Mclemore (1991) 12 Rio Grande valley Taos 1600 unknown t6 <1,000 0 13 Cimanoncito Colfax 1898 some none <1,000 0 14 Bayard Grant 1900 some 128 <1,000 24,000 Lasky (1936) 15 Red River (Rio Hondo) Taos 7825 unknown 120 <500 365 Roberts et al. (1990) 16 Nogal Lincoln 1865 some 134 200 14,800 Mclemore (1991),Wells and Wootton (1932) 17 Sylvanite Hidalgo 1908 none 109 <200 2,400 Lasky (1947),Wells and Wootton (1932) 18 Willow Creek San 1883 unknown none 100 179.000 Miguel 19 Picuris Taos 1908 unknown 65 100 15 Orris and Bliss (1985) 20 Rio Chama Rio Aniba 1848 unknown some <100 0 21. Placitas-Tejon Sandoval, 1900 unknown 49 <100 50 Bemalillo 22 Tijeras Canyon Bemalillo 1881 unknown none <100 42 23 Hell Canyon Torrence, 1900 unknown none <100 1 Valencia 24 Rosedale Socono lgM none 15 15 27,750 25 Chloride Sierra 1883 none 2 2,500 26 Mora River Mora 1870 unknown none unknown 0 27 El Rito Rio Aniba 1933 unknown none unknown 0 Lasky and Wootton (1933) 28 Villanueva San before 1940 none unknown unknown 0 Miguel 29 Las Vegas San 1883 unknown none unknown 0 Miguel 30 Santa Fe SantaFe 1933 unknown none unknown 0 31 Folsom Union 1940 unknown none unknown 0 Harley (1940) 32 Gold Hill Grant, 1900 unknown unknown unknown 1,620 Richter and Lawrence (1983) Hidalgo 33 Burro Mountains Grant ? unknown some unknown >50,000 34 Lordsburg Hidalgo ? unknown none unknown 256,5ffi Northrop (1959) 35 Gallegos Harding ? none none none 0 Harley (1940) 36 Gallinas Lincoln ? none none none 5 Northrop (1959) TOTAL ESTIMATED PLACER GOLD PRODUCTION 1828-1991. 584,501 65,&l updated from Johnson (1972)

and the true extent of the deposits is un- oz have been found at Elizabethtown- rounded, deeply weathered hills. Large, known. Baldy (jones, l9M) and to 4 oz at Hope- economic deposits worldwide are rare in Most placers in New Mexico are low- well (Wellsand Wootton, 1932).However, v-shaped valleys, especially in glaciated grade, disseminated deposits consisting most placers in the state contain less than terrains. A number of placer gold deposits of fine gold. Small high-grade deposits do 0.05ozlyd3. The gold is typically very pure in New Mexico occur in deeply weath- occur locally. Small streaks with samples (greater than 900 fine). ered, rugged mountains where erosion and as high as 3 ozlyd3 are reported from the Most economic placer deposits in the weathering are extensive and rapid (i.e. Pittsburg district, but the average grade world are found near relatively older lode Elizabethtown-Baldy, Pinos Altos). is less than 0.03 ozlyd3 (Harley, 7971).Early deposits in areas of subdued topography Many of the largest gold-producing dis- production from cemented-graveldepos- marked by broad, trenched valleys and tricts in New Mexico contain some placer its in the Hillsboro district assayed 0.10 rounded, deeply weathered hills (Boyle, deposits (Table3). Four of the five major ozlyd3, but drilling and blasting was re- L979, 1987).Most of the larger placer de- placer deposits are in the top ten gold- qutued (Heikes, 1913). Deposits at Old posits in New Mexico are in similar ter- producing districts. However, three ma- Placers typically contained 0.05 ozlyd3 rains. The Old and New Placersdistricts jor dishicts in southwest New Mexico have (Lindgren et al., L91.0)and at New Placers and the Hillsboro dishict are in relatively no reported placer gold deposits (Table3): 0.08 ozlyd3 (Elston, 1967).Nuggets to 12 subdued topography consisting of (F

New Metico Geology May 1994 n TABLE 2-Location of placer gold deposits in New Mexico (from Johnson, 1972, and other referenceslisted in Table 1) and age of adjacent lode gold deposits (from North and Mclemore , 7986, 7988;Mclemore, in press).

Approximate location of placer gold deposits Approximate age of lode gold deposits

Elizabethtown-Baldy T27N Rl6-18E Moreno River valley, flanks of Baldy Mountain, Ute and Ponil Oligocene-Miocene Creeks

Hillsboro T15-165R6-7W Animas Hills, Dutch Gulch, Rio Percha Laramide Old Placers T12-13NR7-8E Ortiz Mountains, Cunningham Canyon, Dolores Gulch, Arroyo Oligocene-Miocene Vieio

New Placers T12N R2E San Pedro Mountains, Tuerto Creek Oligocene-Miocene

Pinos Altos T16-175R13-14W Bear Creek, Rich Gulch, Whiskey Gulch, Santo Domingo Gulch, Laramide near Mountain Keg mine

Hopewell T28-29NR6-7E Tusas Mountains, Placer Creek (Eureka Creek) Proterozoic Pittsburg T1.4,1.6,175R4W Trujillo Gulch, Canyon, Union Gulch, Palomas Gap Proterozoic Jicarilla T5S R12E Ancho, Warner, Spring, and Rico Gulches Oligocene-Miocene

Orogrande T22S R8E Jarilla Mountains Laramide White Signal, T20SR16, 14W Gold Gulch, Gold Lake Laramide Malone

White Oaks T65 R11E Baxter and White Oaks Gulches Oligocene-Miocene Rio Grande valley Red River to Cabresto Creek unknown Cimarroncito T26N R18E Urraca Creek Oligocene-Miocene Bayard T17-185R12-13W drainages near Bayard Laramide

Red River T28-29NR14-15E, Bitter Creek, Creek, Placer Creek, Red River, Gold Hill, Precambrian, mid-Tertiary T25-27NR13E Lucero Creek, Arroyo Hondo Nogal T9-10SR11-12E Dry Gulch Oligocene-Miocene Sylvanite T28SR15W drainages from west side of Laramide Willow Creek T18N R12-13E Willow Creek, Pecos River Proterozoic Picuris T24N Rl1E Picuris Mountains, Rio Grande Proterozoic Rio Chama T23N R5-68 near Abiquiu unknown

Placitas-Tejon T13N R5E Las Huertas Creek, Tejon Canyon Proterozoic, Paleozoic to Mesozoic Tijeras Canyon T1ONR4.6E Tijeras Canyon Proterozoic

Hell Canyon T8N R3-5E Hell Canyon, near Milagras claims Proterozoic Rosedale T65 R5-6W near Rosedale mines Miocene

Chloride T10-115R9W Lookout Mountain in Miocene Mora River T21N RT5E Mora River area, Rio La Casa, Luian Creek Proterozoic El Rito T25N R7E Chana Basin, El Rito Creek, Arroyo Seco unknown Villanueva T12N R15E Pecos River between Villanueva and Sena unknown Las Vegas T15N R15E Las Vegas Proterozoic? Santa Fe T17N R11E Santa Fe River Proterozoic?

Folsom T31N R31E Cimarron River, northeast of Folsom mid-Tertiary Gold Hill T21SR16W Gold Hill Canyon (Foster) Proterozoic, Laramide

Burro Mountains unspecified streams and dry washes various Lordsburg T23SR18, 19W arroyos draining known mines Laramide Gallegos near Ute Creek none

Gallinas unspecified streams and dry washes OligoceneMiocene

Santa Rita, Mogollon, and SteepleRock. Santa Rita is a porphyry copper deposit, TA^BLE3-lvlajor gold-Producing districts in New Mexico (updated from North and Mclemore, and the gold production is a byproduct of 1986, *Major 1988). placerproduction (>50,000oz), +no knbwn placerdeposits. copper mining. The gold is finely dissem- inated in the low-grade copper deposit Estimated gold District Countv production (oz) Type of deposits and not readily available to form placer deposits. The SteepleRock and Mogollon + Santa Rita Grant >475,000 porPnyry coPPer *Elizabethtown-Baldy districts are Oligocene to Miocene vol- Colfax 471,400 Great Plains Margin, placer canic-epithermal deposits in rugged, *Old Placers Santa Fe 450,000 Great Plains Margin, placer eroded terrains without any evidence of +Mogollon Catron 355,000 volcanic-epithermal placer gold accumulations. Actually, very *Hillsboro few volcanic-epithermal deposits are as- Siena 270,000 Laramide vein, placer sociatedwith placergold deposits(North Lordsburg Hidalgo 266,600 Laramide vein, minor placer and Mclemore, L986;Mclemore, in press). Willow Creek San Miguel L79,000 Proterozoic massive sulfide, minor placer Placer gold deposits in New Mexico are White Oaks Lincoln 163,500 Great Plains Margin, placer associatedwith most Great Plains Margin *Steeple Rock Grant 151,000 volcanic-epithermal deposits (Oligoceneto Miocene) and with *Pinos numerous Laramide vein and Proterozoic Altos Grant 150,000 Laramide vein, carbonate-hosted, placer vein and replacementdeposits (Table 2).

May 1994 Nm Mexico Geology FIGURE 2-The gold pan continues to be an excellentquantitative device FIGURE 3-The prospector opened up the American West and recovered to assessthe potential ofa placer deposit. Then as now, the finer points many an ounce of gold using nothing more complex than the sluicebox, of the art are best passed on to the novice by a seasonedprofessional. long tom, and rocker. Steel engraving from an 1867 stock certificate, Postcard with 1898copyright, courtesy of R. W. Eveleth. courtesy of R. W. Eveleth.

Economic potential Mining and Technology,73 pp central New Mexico: New Mexico Geological So- The economic potential of placer de- Bauer, P. W , 1990,The Big Ditch: New Mexico Ge- ciety, Guidebook to 45th Field Conference. posits in New Mexico is limited. Doubt- ological Society, Guidebook to 41st Field Confer- Mclemore, V. T., and North, R. M., 1987, Metallic ence,pp. 50-61. mineral deposits in Colfax and Union Counties, Boyle, R. W ,1979, The geochenistry of gold and its northeastern NeW Mexico: New Mexico Geological deposits: Geological Suwey of , Bulletin 280, Society, Guidebook to 38th Field Conference, pp 584 pp 323-329 Boyle, R. W., 1987, Gold, history and genesisof de- Mclemore, V. T., Ouimette, M., and Eveleth, R W, posits:Van Nostrand Reinhold Co., Inc , New York, 1991, Preliminary observationson the mining his- 676 pp tory, geology, and mineralization of the ficarilla Elston, W. E , 1967,Summary of the mineral resources mining district, Lincoln County, New Mexico: New of Bemalillo, Sandoval, and Santa Fe Counties, New Mexico GeologicalSociety, Guidebook to 42nd Field Mexico (exclusiveof oil and gas): New Mexico Bu- Conference,pp. 311J16. reau of Mines and Mineral Resources,Bulletin 81, North, R. M., and Mclemore, V. T, 1986,Silver and 81 PP gold occunencesin New Mexico: New Mexico Bu- Griswofd, G 8., 7959, Mineral deposits of Lincoln reau of Mins md Mineral Resources,Resource Map County,New Mexico:New MexicoBureau of Mines 15,32 pp text, scalel:1,000,000. and Mineral Resources,Bulletin 57, 1,17pp North, R. M, and Mclemore, V. T., 1988,A classi- reported Harley, G. T., 79U, The geology and ore deposits of fication of the preciousmetal depositsof New Mex- reserves: |icarilla with 5.4 mil- Siena County, New Mexico: New Mexico Bureau ico; in Bulk minable precious mbtal deposits of the lion yd3 of 0.043 oz Aulyd3 in 1974(Se- of Mines and Miheral Resources,Bulletin 10, 220 : Geological Society of Ne- PP. vada, Symposium Volume, pp.525-ffi. Harley, G T ,1940, The geology and ore deposits of Northrop, S. A., 1959.Minerals of New Mexico: Uni- northeastern New Mexico (exclusive of Colfax versity of New Mexico Press,Albuquerque, 665pp. County): New Mexico Bureauof Mines and Mineral Orris, G. J., and Bliss,f. D , 1985,Geologic and grade- Resources,Bulletin 15, 102 pp. volume data on 330 gold placer deposits: U S. Ge- Heikes, V C , 191,3,Dry placers in New Mexico; in ological Suruey, Open-file Report 85-213, 172 pp. Mineral Resources1912, Part 1: U.S. GeologicalSur- Paige,S. 1910,The ore depositsnear Pinos Altos, New vey, Mineral Yearbooks,pp. 261,252 Mexico; in Gold and silver: U.S GeologicalSuruey, Howmd, E- V., 1967,Metalliferous occurences in New Bulletin 470-8, pp. 109-125 Mexico: Phasel, stateresources development plan: Paige, S., 1912,The geologic and structural relation- State Planning Office, Santa Fe,27O pp. ship at Santa Rita (Chino), New Mexico: Economic fohnson, M G., 7972, Placer gold deposits of New Geology, v. 7, pp. 547-559. Mexico: U S. Geological Suroey, Bulletin 7348,46 Richter, D H, and Lawrence, V. A., 1983, Mineral pP. deposits map of the Silver City 1" x 2" quadrangle, Jones, F A., 7904,New Mexico mines and minerals: New Mexico and : U S. GeologicalSuruey, Santa Fe Groups, have been examined for New Mexican Printing Company, SantaFe, 349pp. Miscellaneous Investigations Map I-1310-8, scale Lasky, S. G., 7936,Geology and ore deposits of the l:250,000. Bayard area, Central mining district, New Mexico: Roberts, T T., Parkison,G. A., and Mclemore, V T., U S Geological Survey, Bulletin 870, lMpp. 190, Ceology of the Red River district, Taos County, Lasky, S C., 7947,Geology and ore deposits of the New Mexico: New Mexico Geological Society, Little Hatchet Mountains, Hidalgo and Grant Guidebook to 41st Field Conference,pp. 375J80. Counties, New Meico: U.S GeologicalSuruey, Schmidt, P G , and Craddock, C., 1964,Gmlogy of ProfessionalPaper 208, 101 pp. the Jarilla Mountains, Otero County, New Mexico: Lasky, S G , and Wootton, T P, 1933, The metal New Mexico Bureau of Mines and Mineral Re- resourcesof New Mexico and their economic fea- sources,Bulletin 82, 55 pp. tures: New Mexico Bureau of Mines and Mineral Segerstrom,K., andRyberg, G. C.,1974,Ceology and script, and their commentsare appreciated. Resources,Bulletin 7, 178 pp placer-golddeposits of the JicarillaMountains, Lin- Lynne Lindgren, W, Graton, L. C., and Gordon, C H., coln County, New Mexico: U.S. GeologicalSuruey, Hemenway typed this m-anuscript 1910,The ore deDositsof New Mexico: U S. Geo- Bulletin 1308,25 pp. and Kathy Campbelldrafted the figure. logical Suroey, PiofessionalPaper 68, 361 pp. Wells, E. H., and Wootton, T. P., 1932,Gold rnining Mclemore, V. T., 1991,,Base- and precious-metalde- and gold deposits in New Mexico: New Mexico Bu- References posits in Lincoln and Otero Counties, New Mexico: reau of Mines and Mineral Resources,Circular 5, New Mexico GeologicalSociety, Guidebook to 42nd 26 pP. Baker,D. L.,1986,The geology and gold depositsof Field Conference, pp 305J09 West, J. M , 1971,How to mine and prospect for placer selected-areas of the f icarilla dishict,"Lincoln' County, Mclemore, V T., in press, Volcanic-epithemal de- gold: U.S Bureau of Mines, Information Circular New Mexico: MS thesis, New Mexico Institute of posits in the Mogollon-Datil volcanic field, west- 8417,43 pp. n

Neu Metico Geology May 1994