INDEX TO VOLUME 24

Leading articles are in bold face type; notes, abstracts and reviews are in ordinary type. Only for which definite data are siven are indexed. Abukumalite(ShinHata)...... 66 Brandenberger, E. Angewandte Adinolesof D.inasHead, Cornwall. Kristallstrukturlehre. IBook (Agrell). 63 review] 276 Agrell,S. O.. 63 Bray, J. M. Ilmenite-hematite- Alderman, A 277 magnetite relations in some Allen,V. T.. . 194 emery ores. 162,183 Alurgite from California, new oc- Brochantite. (Palache,Richmond) 463 currenceof. (Webb). . I z.t Brunckite. (Herzenberg) 350 Ammonium mica synthesized from Buerger,M. J. of vermiculite. (Gruner) 428 gudmundite.. . 183 Anderson,B. W... 528 Bullard, F. M. Rosebudmeteorite, AngewandteKristallstrukturleh re. Milam Co., Texas 184,242 (Brandenberger)[Book review] 276 Burns,B. D. 528 Antlerite. (Palache)...... 293 Apatite, fluorescent,from Center Calcite,Fe-Mn. (Yosimura). 660 Strafford, N. Hamp. (Stewart) 274 Caledonite. (Palache, Richmond) 441 Australitesof unusualform. (Single- Canyon Diablo iron, identification ton). . . 63 of diamond in. (Ksanda, Awariute.(Owens, Burns). . . . 528 Henderson).... 677 CesAro,G..... 280 "Baddelyite" from Alno-an error. Chao,S.H...... 277 (vonEckermann). 528 Chemicalanalyses of minerals,pres- Bannister,F. A. ....64,66 entationof. (Hey). . 347 Barksdale, J. D. Silicified wood in Chlorite veins in serpentine near dolomite. .. ..181,699 Kings River, Calif. (Durrell, Bavenite,ne\\r occurrence of. (Clar- Macdonald). 452 ingbull). 277 Chrysoberyl occurrence near Behre,C. H., Jr. 181 Golden, Colo. (Waldschmidt, Beliankin,D. S.. . 279 Gaines). 193,267 Bell,J. F. 181 Cinnabar,darkening of, in sunlight. Berman, H. Torsion microbalance (Dreyer).. . +57 for determining specific grav- Claringbull,G. F.. . 277,347 ity of minerals 182,434 Clay, Hawaiian ceramic, -- and Gonyer, F, A. Re-ex- composition of. (Wentworth, amination of colusite. 377 Wells,Allen).... 19+ Berry,L. G.. 182 Clay minerals, hydrothermal for- Bertrandite...... 802 mation of, in laboratory. (Nor- ..... 804 ton)... I B-uranotile. (Steinocher, Nov4iek). 324 Clays, adsorptive, of Texas Gulf Bidalotite.(Rao, Rao). 3S0 coast.(Ilagner). . .67,187 Bloorn, M, C, Mechanism of the Clerici solution for specific gravity genesisof polym.orphousforms. determination of small mineral 182,281 $rains. (Jahns). 116 Blgvad, R.. 278 Cliftonite (discreditedspecies) 280 Botryogen.(Quentenite). 525 Colloform ores, European, of Mis- Bowles, O. The stone industries. sissippiValley type. (Behre). . 181 [Book review]. 461 Colusite, its occurrence, paragene- 811 8t2 INDEX

sis and geretic significance. Determination of comPonents of (Nelson) 369 a heterogeneous particulate Colusite, re-examination of. (Ber- mineral system. (Goldman' man, Gonyer) 377 DallaValle). 4A Contributions to the knowledgeof Devadite.(Fermor) 406 the chemical composition of Diamond cutting in terms of the earth's crust in the East atomic structure, exPlanation Indian Archipelago.(Van Ton- of. (Kraus,Slawson). 188 geren) [Book review] I72 Diamond in Canyon Diable iron' Cooke,H. B. S. 277 identification of. (Ksanda' Coombs,H. A. 186 Henderson) 677 Copiapite, of. Diamond, variation in hardness of. (Peacock) l9l (Kraus, Slawson) 661 Copiapite, conlposition and optics Dichroism in , quantita- of.(Berry).. .. 182 tive measurement of. (Slaw- Copperiodate,artificial...... 390 son, Thibault) +92 Corundum in dike at Glen Riddle, Discreditedspecies .280,728 Penna.(Tomlinson). . . 193,339 Donnay,J. D.H. 184 Cristobalite in southwestern Yel- Dreyer, R. M. Darkening of cinna- lowstone Park. (Howard). . . 485 bar in sunlight. 457 variation in NaF. Drugman,J. 63 (Frondel)...... 185 Durrell, C. and Macdonald, G. A. Crystal space groups determined Chlorite veins in serPentine without r-rays. (Donnay) .. 184 near Kings River, Calif.. . . . 452 Cupro-asbolane.(De Leenheer) 657 Cuprorivaite.(Minguzzi) 350 Eight Mile Park, Colo., minerals of. (Landes) 188 Emery ores, ilmenite-hematite- Dakeite, identity with schroecke- rrragnetiterelations in' (Bray) ringite.(Novddek)... 317 162,t83 DallaValle, J, M. with Goldmaa, Emrnons, R. C. and Gates, R. M. F. H. Determination of courPo- New method for determina- par- nents of a heterogeneous tion of feldspartwins.. . 577 40 ticulate mineral system. . Endothermite(Beliankin).. 279 634 Darapskite . . English, G. L. Descriptive list Deer, W. A. and Wager, L. R. of new minerals 1892-1938. Olivines from Skaergaard in- [Book review] 347 E. trusion, Kangerdlugssuak, Epidesmineand stellerite, relation 18 Greenland. to stilbite.(Pabst) . . .. 63 De Leenheer,L. 657 Evans, R. C. Introduction to crys- Density determination, micropyc- tal chemistry.IBook review]. . 657 nometric, improved techaique Eyepiecemicro-planimeter.(Cooke) 277 in. (Ksanda,Merwin)... .. 482 Descriptive list of new minerals Fabrics of inclusions and the ad- 1892-1938. (English) [Book jacent intrusive rocks, com- reviewl 347 parisonof. (Ingerson)...... 187, 607 Descriptivepetrography of igneous Fahey, J. J. Shortite' a new car- rocks. Vol. IV. Feldspathoid bonateofNaandCa .. .. . 514 rocks and peridotites and perk- tr'airbairn, H. W. Correlation of nites. (Johannsen) [Book re- quartz deformation with its viewl. . . 64 crystalstructure..,....., '. 351 INDEX 813

Faratsihite. 536 Genesis of polyrnorphous forms, , resorbed, in a basalt mechanismof.(Bloom). . ..182,281 'W. flow.(Fries).. .. 782 Glass, J. J. and Schaller, T. Feldspar, introduction of, into in- Inesite 26 clusions,Ellsworth, N. Hamp. Glasses, alteration of, to mont- (Page) . 190 morillonite. (I{auser, Reyn- Feldspar twins, new method for olds).. 590 determination of. (Emmons, Goldich, S. S. and Kinser, J. I{. Gates)...... 577 Pertlite from Tory Hill, On- Feldspatloids,stainingof. (Shand) 508 tario... 185,407 Fermor, L. L. . 279, 406 Goldman, F. H. and DallaValle, Fisher, D. J. with Palache, C. J. M. Accurate determination Gratonite, a new mineral from of components of a heteroge- Peru 136 neous particulate mineral sys- Fleischer,M.. 185,189 tem ... 40 Fluorine, qualitative determina- Goldschmicltine, a new antimonide tion of in minerals. (Foley, ofsilver.(Peacock).... 227 West)..... 398 Gonyer, F. A, with Berma:r, II. Fluorite, twinned octahedra.(Swit- Re-examinationof colusite.. . 377 zer). .193,805 Goodspeed,G.E..... 186 Foley, F. C. and West. P. W. Granite pegmatites of Mt. Antero Qualitative determinationof F region, Colorado. (Switzer) 193, 791 in minerals. 398 Graphic granite. (Wahlstrom). 681 Foshag,W. F.. . 185,728 Gratonite-preliminary description with Gale, W. A. Teepleite, of a new mineral from Cerrode a trew mineral from Borax Pasco,Peru. (Palache,Fisher). 136 Lake, Calif.. . 48 Gruner, J. W. Ammonium mica Francolite,composition of (Sandell, synthesized from vermiculite . 428 Hey,McConnell).... 277 Formation and stability of Fries, C., Jr. Resorbed feldspar in muscovite in acid solutions at abasaltflow.... 782 elevatedtemperafures...... 624 Frohberg, M. H. Occurrence of 186 riebeckite in Michipicoten dis- Gudmundite, crystal structure of. trict, Ontario 382 (Buerger). .. 183 Frondel,C.. ... 185 Fuller, R. E.. 186 Hagner, A. F. Adsorptive clays of Furnival, G. M. Notes on qtlartz TexasGuIfcoast...... 67,187 group '(dikest'. 499 Elanksite, composition, space and unit cell of. (Ramsclell). . 109 Gabrielson,O. 406 Hanley, F. B. New accessibilityof Gaines, R. V. with W'aldschmidt, 'W. ThomsoniteBeach, Minn..... 726 A. Occurrence of chryso- Harmotone, association of, with Ba beryl near Golden,Colo. . 193,267 feldspar at Glen Riddle, Gale, W. A. and Foshag, W. F. Penna.(Meier). 189,540 Teepleite, a new mineral from Harmotone, corundum and hyalo- Borar Lake, Calif.. 48 phane at Glen Riddle, Penna. Gates, R, M. with Emmons, R. C. (Meier,Tomlinson). . 189 New method for determina- Hauser, E. A. and Reynolds, If. H. tion of feldspartwins.. . 577 Alteration of glasses to mont- Gems and gem materials. (Kraus, morillonite. 590 Slawson)[Bookreview]... . 461 Hawaiian ceramic clay, mineral 814 INDEX

composition of. (Wentworth, Jahns, R. H. Clerici solution for Wells,Allen) 194 specific gravity determination Elenderson, E. P. I87 of smallmineralgrains...... 116 with Ksaada, C. J. Identifi- Jarrell, O. W'. Marshite and other cation of diamond in the minerals from , CanyonDiablo iron. 677 Chile...... 188,629 Henricks, S. B. Polymorphism of Occurrenceof antlerite at themicas.. 729 Chuquicamata 301 Random structures of layer with Palache, C. Salesite, a minerals as illustrated by new mineral from Chuquica- cronstedite.Possible iron con- mata, Chile. 388 tent of kaolin 529 Jefterson,M. E. Optical measure- Herzenberg,R.. . 350 rnents on micas . . 729 Hess, H. H. World distribution of Johannsen,A. Descriptive petrog- serpentinized peridotites and raphy of igneous rocks. Vo[. its geologicsignificance.. 275 IV.[Bookrevie\{] ... 64 Hexahedritemeteorites from Chile, chemical study of. (Hender- Kaolin, possible iron content of. son) . . 187 (Henricks)...... 529 Hey,M. H. 66,277,280,347 Kaolinite in some "eenie" coals, History of the study of ore min- (Claringbull).. 3+7 erals. (Thomson) 137,181 Kasoite.(Yosimura) 658 Hopeite, symmetry and unit cell Keith, M. L. Selectivestaining to of.(Wolfe).... 194 facilitate Rosiwal analysis 561 Hata, Shin 66 Khoharite.(Fermor) 27q Howard. A. D. Cristobalite in south- Kinser, J. IL with Goldich, S. S. western Yellowstone Park. . 485 Perthite from Tory Hill, On- Huckitta meteorite, central Aus- tario. . 185,407 tralia. (Madigan,Alderman). 277 Klein, I. Microcline in the native H unt, W. F. Book reviews. . . . .347, 404 deposits of Michigan 643 Hyalophane. 557 Knebelite-Fe,Mn.(Yosimura)... 659 Knox, N. B. Instituto de Geologia, Idocraseand certaingarnets, chem- Caracas,Venezuela 171 ical similarity of . (McConnell). 62 Kornerupine,new occurrence.(An- Ilmenite-hematite-magnetite rela- derson, Payne) .. 528 tions in some emerv ores. Kotoite. (Watanabe) 406 (Bray). . 162,t83 Kraus, E. H. and Slawson, C. B. Indices of refraction in anisotropic Variation of hardness in the media, measurement of. diamond. .189, 661 (Quirke, Lacy) 705 Gems and gem materials. Inesite. (Glass,Schaller) 26 fBookreview].... 461 Ingerson, E. Comparison of the Krumbein, W. C. and Pettijohn, fabrics of inclusions arrd the F. J. Manual of sedimentary adjacentintrusive rock 187,607 petrography. lBook reviewl. . 404 Instituto de Geologia, Caracas, Ksanda,C. J,. . . . 185,193 Venezucla.(Knox) .. 171 and Elenderson.E, P. Iden- Introduction to crystal chemistry. tification of diamond in the (Evans) [Bookrcview] 657 CanyonDiabloiron.... bii Iron knebelite. Iron tephroitc. and Merwin, H. E. Im- (Yosimura) 659 proved technique in micro- INDEX 81.5

pycnometric density determi- 189 nation. 482 Meier, A. E. Association of harmo- tone and Ba feldspar at Glen Lacy, W. C. with Quirke, T. T. Riddle. Penna.. . 189,540 Measurementof indices of re- M61on,J.... 658 fraction in anisotropic media. . 705 Merosymmetry vs. merohedrism. Landes,K. K. .. 188 (Rogers) 63 Larsen, E. S. Presentation of Merritt, C. A. with Wood, F. C. Roebling Medal to W. T. Soper,Oklahoma, meteorite 59 Schaller 53 Merwin, H. E. with Ksanda, C. J. Book review 64 Improved tecbnique in micro- Larsen,E. S. 3rd 188 pycnometric density determi- Legge,J. A. Jr. Verticalilluminaror nation.. 482 for low magnification pnorog- 193 raphy of polishedsurfaces. . . 400 Metasomatism of shale to an igne- Leucite-rich rocks of West Kim- ous appearing rock. (Good- berly area, W. Australia, min- speed,Fuller, Coombs) ... .. 186 eralsfrom.(Prider) .. 277 Meteorites: Libethenite. 633 Hexahedrites from Chile 187 Liquid-vapor equilibria in system Huckitta, central Australia 277 KrO SiOr-CO2-H2O.(Morey, Rosebud, Milam Co., Texas. 184,242 Fleischer) 189 Santa Luzia de Goyaz 598 Shallowater, Texas 185 Macdonald, G. A. with Durrell, C. Soper, Oklahoma 59 Chlorite veins in serpentine Meyerhofferite 522 near Kings River, Calif.. . . 452 Meyers, W. M. Book reviervs 461 Madigan, C. T.. . 277 Miargyrite crystals from Rands- Mangan-actinolit e 659 burg, Calif. (Murdoch)...... 772 Mangan-knebelite oJv Micas, polymorphism of, and opti- Mangan-tremolite. (Yosimura) 659 cal measurements. (Hen- Manual of sedimentary petrog- dricks, Jefferson) .. 729 raphy. (Krumbein, Pettijohn) Microbalance, torsion, for deter- [Bookrcview].... 404 mination of specific gravities Marble, J. P. Analysisof rwo sam- of minerals. (Bernnn) 182, 434 ples of pitchblende ore from Microcline in the native copper de- Great Bear Lake, Canada. . . . 272 posits of Michigan. (Klein) . . 643 Marshite a:rd other minerals from Mineralogical Socirty of America: Chuquicamata, Chile. (Jarrell) Former olficers and meeting . 188,629 places ...... 197 Maynard, J. E. Some modes of List of corrcspondents, fellows qt attz -b e aring plut onite s f r om and subscribers. 198 Derby, Vermont. . 653 Nominations for officers for 1940. 605 McConnell, D. Chemicalsimilaritv Proceedings of 19th annual meet- of idocrase and certain garnets, 62 1ng. \t+ - Symmetry of phosphosider- Mineralogical Socicty of Great ite ... 189,636 Britain and Ireland.63,27 7, 347,528 277 Minerralogical trip to . Mechanical twinning rn crystals, (Rogers) 192 morphology of. (Bell) 181 Minguzz.i, C. 350 Meen, V. B. Santa Ltzia d.e Goyaz Molengraafrfite,identity with lam- meteorite..... 598 prophyllite.(Tilley)...... 728 816 INDEX

Monazite, unit cell and spacegroup Occurrence of rarer elements in the of.(Parrish)..... 651 Netherlands East Indies. (Van Monothermite.(Beliankin) . 279 Tongeren) fBookreview]. ... t7Z Monticcllite rock from Crestmore, Olivines from tle Skaergaard intru- Calif.(Rogers) 192 sion, Kangerdlugssuak, East Montmoril lonite, x-ray data. 94 Greenland. (Deer, Wager) . . 18 Morel', G. W. 189 Olivines, zoned, and their Petro- Mountain,E. D. 278 genetic significance. (Tom- Mounting and remounting detrital keieff) 64 minerals grains on slides. olivenite. 632 (Smith). 602 Optic properties of organic and in- Murdoch, J. Crystallography of organic compounds comPared. veatchite 130, 190 (Winchell). 194 Miargyrite crystals from Ore Minerals, history of (Thom- Randsburg, Calif. . 772 son) 137 Muscovite, formation and stability Overite, a new mineral from Fair- of, in acid solutions at elevated field, Utah. (Larsen). 188 temperatures.(Gruner). 624 Owen,E. A. 528 Muscovite, optical and chemical Oxyapatite, fluorine and alkaline. studies.(Volk) .. . . 255 (Vlodavetz). . 279 Nelson, R. Colusite-its occur- rence, paragenesisand genetic Pabst, A. Formula and structure of significance 369 ralstonite. 566 Nepheline-syenite pegmatites in 63,64 the Bearpaw Mts. of Mon- Page,L. R.. 190 tana.(Pecora).... I9I Palache, C, Antlerite 293 Nepheline, zonal structure in. Brochantite 463 (Shand). 508 and Fisher, D. J. Gratonite, Newark MineralogicalSociety . 64 a new mineral from Cerro de New Haven Mineral Club 405 Pasco,Peru 136 New minerals and Jarrell, O.'W. Salesite' Goldschmidtine... . . 227 a new mineral from Chuquica- 388 Gratonite. 136 mata. Chile. . Overite. . 188 and Richmond, W. E. Cale- 441 Salesite. . . 388 donite. . Shortite. . . 514 Parrish, W. Unit cell and sPace 651 Teepleite. '48 groupof monazite. 190 New mineral names. . 66,278,350,406,657,728 PaYne,C.J.. 528 New York N{ineralogicalclub. Peacock,M. A. Goldschmidtine'a . ...224,278,40+,462 newly recognizedantimonide Nickel-iron alloy, natural, crystal of . . 227 structureof. (Owen,Burns) 528 191 Norton, F. H. Ilydrothermal for- Pecora, W. T.. . l9l mation of clay minerals in the Penninite-optical data 454 laboratory.... 1 Peridotites, serpentinized, world Nov6dek, R. Identity of dakeite distribution of, and its geologic andschroeckingerite.. . .. 317 significance.(Hess).. . '.. 275 and Steinocher, V. B-urano- Perthite from Tory Ilill' Ontario' tile. . 32+ (Goldich,Kinser). .. .. 185'407 INDEX 817

Pettijohn, F. J. with Krumbein, Ramsdell, L. S. Composition, space W. C. Manual of sedimentary group and unit cell of hank- petrography.[Bookreview] 40+ site 109 Phenakite 806 Bookreviews 276,657 Philadetphia Mineralogical Soci- Random stnrctures of layer min- ety .225,226,348,349,605 erals as illustrated by cron- Phosphosiderite, s5nnrnetry of. stedite. (Hendricks) 529 (McConnell)...... 189,636 Rao.B. R. and Rao.L. R...... 350 Pickeringite 522 Reflectivity and color of minerals, Picrotephroite.(Yosimura) .. 659 measurementof. (Parrish) 190 Pike,J.. 528 Refractometers employing dia- Pitchblende ore from Great Bear mond and other minerals.(An- Lake, Canada, analysis of. derson,Payne, Pike) 528 (Marble). 272 Reynolds, If. H. with Hauser, E. A. Plutonites, quartz-bearing, from Alteration of glasses to mont- Derby, Vermont, some modes morillonite. 590 of.(Maynard). ... 653 ,Ca and Fe. (Yosi- Pollucite, dehydration and tc-ray mura) 660 study of. (Fleischer,Ksanda). 185 Rhyodacite from Tranquille Fla- Polymorphous forrns, mechanism teau,B. C. (Stevenson).. . t92,+46 of the genesisof. @loom). .182,281 Richmond, G. M. Serendibiteand Potash-sodafeldspar, r-ray exami- associatedminerals from New nation of. (Chao, Smare, City Quarry, Riverside,Calif. 725 Taylor) 277 Richmond, W. E. X-ray study of Potassiumtetrathionate as an ex- antlerite 300 ample of monoclinic hemihe- X-ray study of brochantite. 480 dral symmetry. (Tunell, X-ray study of salesite. . 391 Merwin, Ksanda). 193 with Palache, C. Caledo- Priceite.(Foshag). 728 nite. . . 441 Prider,R. T.. . . 177 Riebeckite, occurrence in Michi- picoten District, Ont. (Froh- with parallel Quartz-a, to berg).. 382 prism.(Drugman) 63 Rockville granite, crystallization Quartz-a, with steeprhomohedron of. (Tatge) 303 predominant (Drug- as form. Roebling Medal-presentation to man). . . . 63 W'.T. Schaller.(Larsen). . . . 53 deformation, Quartz correlation Rogers,A. F. . .63,192 with crystal (tr'air- structure. Rosebud meteorite, Milam Co., bairn). 351 Texas.(Bullard)...... 184,242 notes (Furni- Quartz "dikestt, on. Ross, C. S. and Stephenson,L. W. val). . . . 499 Calcareous shells replaced by (Tol- Quartz "dikes", discussionof. beitlellite. . 393 man).. . 519 Rotation factor for equi-inclina- P. Quensel, 406 tion Weissenbergphotographs, Quetenite JZJ (Tunell) .. 448 T. T. and Lacy, Quirke, W'. C. Russell,A. 3+7 Measurement of indices of re- Russellite.(Hey,Bannister). .. 6o fraction in anisotropic media. 705 Salesite, a new mineral from Chu- Ralstonite, formula and structure quicamata, Chile. (Palachet of. (Pabst)... JOO Jarrell). 388 818 INDEX

Sandell,E. B. 277 methods in the range 3600- Santa Luzia de Goyaz meteorite. 50004. (Van Tongeren) [Book (Meen).. . 598 reviewl I72 Sapphirine crystals from Blink- Spencer,L. J. 348 water, Transvaal.(Mountain). 278 , Ca-Fe and Fe-Ca. Sartorite,crystallography of . (Ban- (Yosimura) 660 nister, Pabst,Vaux). . . 64 Sphenecrystals, large, from SanJa- Sawyer,R. A. Book review. 772 cinto Mts., Calif. (webb) .193,344 Schairer,J. F. 192 Staining, selective, to facilitate Schaller, W. T. Roebling Medal Rosiwal analysis. (Keith). 561 presentation.... 53 Steinocher, V. with Nov4dek, R. with Glass,J. J. Inesite. . . 26 P-uranotile 324 Schroeckingerite, identity with da- Stellerite and epidesmine, rela- keite. (Nov6dek) 317 tion to stilbite.(Pabst). . . . 63 min- and associated Stephenson,L. W'. with Ross, C. S. erals from New City Quarry, Calcareous shells replaced bY (Richmond) Riverside,Calif. 725 beidellite. 393 Serpentines,behavior of, between Stevenson, L. S. Rhyodacite from 500'-650'.(Gruner) .. 186 Tranquille Plateau, B. C.. . 192,446 Shallowater meteorite, petrology Stewart, D., PetrograPhY of of. (Foshag) 185 Jr, some South Victoria Land Sha:rd, S. Staining of feldspath- J. rocks 155 oids and zonal strucfure in W. Vesuvianite and nepheline 508 Stewart, G. apatite frorn Cen- Sharpite.(M6lon) 658 fluorescent Strafford, N. Hamp. 274 Shells, calcareous, replaced by ter industries. (Bowles) beidellite. Stephenson) 393 Stone [Book @oss, 461 Shortite. a new carbonate of Na reviewl pegmatites of and Ca. (Fahey) 514 Switzer, G. Gra:rite region, Colo. Silicified wood in dolomite, (Barks- the Mt, Antero r93,791 dale). ... .181,69s Singleton,F. A.. 63 System FeO-AhOs-SiO2, Prelimi- (Schairer). . . I92 Slawson, C. B. with Kraus, E. H. nary report on. liquid Variation in hardness of the System KrO-SiOr-COr-HzO, (Morey, diamond 188,661 vapor equilibria in. 189 Gems and gem rnaterials. Fleischer). . Szomolnokite. . 522 [Book review]. 461 and Thibault, N. W. Quan- titative measurement of di- Tatge, E. Crystallization of the chroism in tourmaline 492 Rockville granite . . 303 Smare,D.L...... 277 Taylor,W. H. .. 277 Smith, H. T. U. Mounting and re- Teepleite, a new mineral from mounting detrital mineral Borax Lake, Calif. (Gale, Fos- grainson slides 602 hag)' " 48 Soper, Oklahoma, meteorite. Teineile.(Yosimura). . .. 658 (Wood, Merritt) 59 Tephroitc-Fe.(Yosimura). 659 South Victoria Lald rocks, petrog- Thaumasite. 346 raphyof. (Stewart). 155 Thibault, N.'rl{I. witl Slawson, C. B. Spectrographic determination of Quantitative measurement of elements according to arc dichroism in tourmaline 492 INDEX 819

Thomson, E. History of the study ished surfaces.(Legge).... 400 or ore minerals. . 137,181 Vesuvianite and fl uorescent apatite Thomsonite Beach, Minnesota, from Center Strafford, N. new accessibilityof. (Hanley). 726 Hamp. (Stewart) 274 Tilley, C. E.. 728 Vesuvianite from Great Slave Tolman, C. Discussionof quartz Lake region, Canada. (Meen). 189 "dikes"..... 519 Vlodavetz, V. I.. . 279 Tomkeieff,S. I... 6+ Volk, G, W. Optical and chemical Tomlinson, W. H. Corundum in studies of muscovite 255 dike at Glen Riddle, Penna. von Eckermann,H.. 528 t93,339 'Wager, 189 L. R. with Deer, W. A. Tory Hill, Ontario, perthite. (Gol- Olivines from Skaergaard in- dich,Kinser) . . .185,407 trusion,Greenland.. .. 18 Trieuite. (De Leenheer). 657 Wahlstrom, E. E, Graphic granite. 681 Tunell, G. Rotation factor for equi- W'aldschmidt, W. A. and Gaines, inclination Weissenbergphoto- R. V. Occurrence of chryso- graphs. 448 beryl near Golden,Colo.. 193,267 193 Watanabe, T. 406 'W'ebb, Twinned octahedra of fluorite, and R. W. Large sphenecrystals associated minerals from Mt. from San Jacinto Mts., Calif. Antero. (Switzer) 193 ....193,344 New occurrence of alurgite Uranotile-B.(Steinocher,Novddek) 324 from California.. 123 Van Tongeren, W. I. Spectro- Weberite. (Blgvad) . 278 graphic determination of ele- Wells,R. C. .. . 194 ments according to arc meth- Wentworth, C. K. 194 '*'ith ods in the range 3600-5000 A. West, P. W. Foley, F. C. II. Occurrence of rarer ele- Qualitative determination of ments in the Netherlands East F in minerals 398 Indies. [Book review].. 172 Winchell,A.N...... 194 Vaux, G. 64 Wolfe,C. W.. 194 Veatchite, crystallography of. Wood, F. C. and Merritt, C. A. (Murdoch). 130, 190 Soper,Oklahoma, meteorite 59 Verdelite.(Quensel,Gabrielson) 406 Wulfenite 635 Vertical illuminator for low mag- nification photography of pol- Yosimura,T.. . 658,659, 660