INDEX TO VOLUME 25

Leading articles are in bold face type; notes, abstracts and reviews are in ordinary type. Only minerals for which definite data are given are indexed.

Ablykite. (Sedletzky, Yussupova). /od Aurichalcitein Missouri.(Keller). 375 Acanthite, and unit Austinite(structural data). . ... 457 cell. (Ramsdell)...... 2r2 Australite structures and their or- Adigeite. (Efremov) 155 igin.(Baker) ...... 154 Adirondack igneous rocks and their Axinite, plum colored, new local- metamorphism. (Buddington) ityfor.. ... 552 [Book review] 305 Ayres,V. L. Mineral notesfrom the Akerman it e-gehlen it e-pse ud owol - Michigan iron country. . . . .203, 432 lastonite system. (Osborn, Schairer) 2Il Bagrowski, B. P. Occurrence of Albite-sphene binary system. millerite at Milwaukee, Wis- (Prince) 212 consin.. J.)O Albite-twinning lamellae, width of , Baker, G. Cordierite granite from (Donnay). . . . 578 Terip Terip, Victoria 543 Allanite from Barringer llill, Llano 154 Co., Texas. (Marble) 168 Barth, T. F. W., Correns,C. W., Allanite (optical data and analysis) 397 Eskola, P. Die Enstehungder Allchin, J. P.. 378 Gesteine.[Book review]. 308 Allen, V. T. and'VIIells, R. C. with 'Wentworth, Bartlett meteorite, Bell Co., Texas. C. K, Ceramic (Bullard).. ...205,497 clayinHawaii. ... 1 Bastn?isite(optical data) . 401 Alling, H. L. Book review. JU) Behre,C. H. Jr.. . 203 Alumodeveillite. (Ef remov) 313 Bcll,K. G. ... 208 Alunite. 38 Bellingerite, a new mineral from . (structural data) +l.t Chuquicamata, Chile. (Ber- Analyses of metamorphic and ig- man, W'olfe). 505 'Wolfe, neous rocks, geographical clas- Berman, H. and C. W. sificationof. (Mathews) ..... 209 Bellingerite, a new mineral Anapaite 788 from Chuquicamata,Chile. .. 505 Andesite, Cascade Mts., Oregon. r53,204 (Bogue, I{odge). 627 Beny, L. G. Studies of mineral Annabergite. . . . 804 sulpho-salts. IV. Galenobis- Antarctica. (Taylor) review] 625 [Book mudte and 'rlillianite.tt. . tzo Apsouri, C. N... 203 204 Aramayoite, crystallography of . Bertrandite and , new occur- (Berman, Wolfe) . r.).t rence at Cornwall. (Phe- Armstrong, L. C. Decomposition mister) . . . 379 and alteration of feldspars and spodumeneby water. 810 Bobierrite 806 Arsenopyrite, optical evidence of Bogue, R. and Hodge, E. T. Cas- twinning in. (Lukesh) 619 cade andesitesof Oregon. . . . 627 Arsenopyrite, thermal decomposi- Bosazza,V. L. Notes on refractive tion of. (Lukesh). 539 index liquids. 299 Arsenrijsslerite. (Friedrich, Rob- Bowley, H JTJ itsch) . .. 313 Boxhole meteoritic iron, central Attapulgite, structural scheme of. Australia. (Madigan, Alder- @radley). .204,405 man) 154 829 830 INDEX

Bradley, W'. F. Strucfural scheme ciple in minerals. (Friend, All- of attapulgite 204,405 chin). 378 Brandite. 750 Color blindness among students of Buddhue, J. D. Some constituents mineralogy. (Grawe) 302 of meteorite rusts . . 435 Columbite... 59 Buddington, A. F Adirondack Columbite crystals, morphology of . igneous rocks and their meta- (Taylor). . . 123,214 morphism. [Book review] 305 Composite dike at Brockhill, Book review 90 Worcestershire. (Taylor) 378 Buerger, M. J. Memorial of Walde- Con{erence on applied nuclear mar Lindgren.. 184 physics 622 Buerger, N. W. 205 Connolly. J. P. Memorial of Wil- Bullard, F. M. Bartlett meteorite, liam A. Tarr... 189 Bell Co., Texas.. 205,497 Contact metamorphism of the (Philbrick) . Burfoot, J. D.Jr. . 206 Katahdin granite. 2t2 at RYe Butler, J. W. Jr. Detrital dihexa- Contact metamorphism hedral crystals in a sedi- Patch, Nevada. (Vitaliano). . . 215 men in Upper Magdalena Val- Cordierite, gem, from Great Slave ley, Colombia,S.A..... 145 Lake area, Canada. (Folins- bee) 216 Calcio-gadolinite. (Nakai) 312 Cordierite granite from TeriP Ca1lainite.... 723 Terip, Victoria. (Baker)...... ) 4.J Carbonate-apatites. III. Carbonate- Correns, C. W. and Eskola, P. with apatite from Magnet Cove, Ar- Barth, T. F. W. Die Ensteh- kansas. (McConnell, Gruner) 157 ung der Gesteine. [Book re- Cascade andesites of Oregon. v iewl 308 @ogue, Hodge) 627 Corundum, mineral associations o[. Catalogue of meteorites, second ap- (Tomlinson).. Z IJ (Gruner). pendix. (Hey) [Book review] 768 Cristobalite in bentonite. 587 Ceramic clay in Hawaii. (Went- Cryphiolitc (analysis) ... 4t7 worth, W'ells, Allen). . . 1 Crystal chemistry of the Phos- phates, arsenates and vana- Cerite, radioactive, near James- town, Colo. (Goddard, Glass). 381 dates of the type A"XOI(Z). (Richmond) Chao,S. H.. ... 311 44r Crystal chemistry.(Stillwelt) Chkalovite. (Gerasimovsky) 380 [Book reviewl . . 249 Chuquicamata copper mine. (Head) 377 and optics of NaF' spectrographic study of Cinnabar, LiF, NaCl, KCl, KBr and KI' (Dre1'g1). 207 effectof dyes on. (Frondel).. . 9t Classification of elements, sulphides Crystal habit variation in NaF. and sulpho-salts. (Berman). 204 (Frondel). 338 Classification of minerals of the Crystallographiccalculations, notes type A (XOr)z.nII'O. (Wolf e) . 7 38,787 on.(Hey)...... 311 Clays, thin sections of. (Weather- Cuprobismutite, a mixture. (Pa- head).... . 311 lache)... .211,611 Clinobarrandite and the isodi- CuzS-CuSsystem, x-ray investiga- morphous series variscite- tion of the solid phases of. metavariscite. (McConnell) .. 719 (Buerger).. 205 Collinsite (chemical and r-ray data) 746 Cuthbert, F. L. Petrography of two Colloidal gold as a colouring prin- Iowaloess materials...... 206, 519 INDEX 831

Dadson, A, S. with Peacock, M. Durrell, C. New data on the optical A. Rammelsbergite and para- propertiesof tridymite 501 rammelsbergite 561 Davies, G. M. with Evans, J. W. Efren.rov,N. E. . . 155,313 Elementary crystallographv. Eisenpickeringite. 254 [Bookrevierv]... 560 Elementary crystallography(Ev- Decomposition and alteration of ans, Davies)[Book review]. 560 feldspars and by Enstatite (chemical and optical W'ater.(Armstrong)... 810 data) .. 780 Deer, W. A. with Wager, L. R. Epidote, brown (optical data). . . 399 Petrography of the Skaer- Erythrite. 804 gaard intrusion of Kangerd- Eskola,P., with Barth, T. F. W. lugssuaq,E. Greenland.[Book and Correns,C.W. Die Ensteh- reviewl...... 308 ung der Gesteine. [Book re- Deveilite.(Efremov). 155 viewl 308 de Villiers,J. E.. . . 379 Evans, J. W. and Davies, G. M. Diamond, variation in hardnessof . Elementary crystallography. (Kraus,Slau'son) .. 209 [Book review] 560 Dichroscope,simple. (Thibault) . . 88 Exsolution growths of zincite in Die Enstehung der Gesteine. manganosite and of mangano- (Barth,Correns, Eskola) [Book site in periclase.(Frondel). .207, 534 revierl,'l. . 308 Extinction atrgle, device for meas- Dihydite. (Ayres). . 434 uring. (Inuzuka) 735 Dimler, R. J. and Stahmann, M. A. Mount for universal stage Fairfieldite (angle table and r-ray study of fragile minerals.. 502 data). 748 Dioptase, new occurrence in Ari- Falkmanite. (Ramdohr, Odman; zona. (Galbraith, Kuhn) 708 Lliller) .. 312 Discredited specics 626 Favalite (crystallographicdata) .. .554 Dittler, E.. . . 155 Feldspar replacing fossils. (String- Djalmaite. (Guimartens). 440 ham) 139 Doeglas, D. J., Reliable and rapid Feldspars, decomposition and al- rapid method for distinguish- teration of, by water. (Arm- ingqtartz and untwinned feld- strong)... .. 810 spar with the universal stage. 286 Feldspar, untwinned, method for Dolerophanite, crystallography of. distinguishing from qtartz. (Richmond,W'olfe) .. 212,606 (Doeglas) 286 Donnay, D. H.'Width J. of albite- Fleischer, M. and Ksanda, C. J. twinning lamellae. .. 578 Dehydration of . 666 206 Fluorite 400 Double variation method of refrac- Fluorite occurrence, West Cumber- tive index determination. I. land and Westmoreland. (Rus- Stage cell. II. Temperature sell) 3 11 control. (Vigfusson) 763 Fischcr, W. Mineralogie in Sachsen Drawings of crystals, accurate. von Agricola bis Werner. (Schaller). . 214 fBookreview]... 379 Dreyer,R.M..... 207 Fisher, D. J. with Palache, C. Duftite (structural data). 458 Gratonite, a new mineral from Dunn, J. A.. 380 Cerro de Pasco, Peru 255 832 INDEX

Discussion of "The formula Goldich,S. S. . . 213 of jordanite.". 297 Goldschmidtine identical with 207 stephanite.(Peacock). 372 Folinsbee,R. E.. . 216 Gold-silver telluride minerals, re- Ford,'W'.E., memorialof. (Knopf). 174 lationship betweenthe crystal Foshag, VI. F. Shallowater mete- structureof. (Tunell).... 215 orite,anew aubrite...... 779 Gonyer, F. A. with Palache, C. Sodium bicarbonate from and stibiotantalite Searles Lake. Calif. 769 from Topsham,Maine.....-.. 4lI - Book review. 379 2rl Foster,W. R...... 207 Goodman,C...... 208 (optical Fosterite data)...... 783 Granodioritesof Philadelphiaarea. Fragile materials, mount for uni- (Postil) 309 versal stagestudy of (Dimler, Gratonite, a new mineral from ..... 502 Stahmann)..... Cerro de Pasco, Peru. (Pal- 313 Friedrich,O. M.. . ache, Fisher). 255 Friend, N.. . 378 J. Gratonite, geologic occurrence of, Frondel, C. Crystal habit variation at Cerrode Pasco,Peru. (Rust) 266 inNaF.... 338 Grawe,O. R. Colorblindnessamong Effect of dyes on crystal studentsof mineralogy .. 302 habit and optics of NaF, LiF, handbookof NaCl, KCl, KBr and KI... .. 91 Grout, F. F. Kemp's . 767 Exsolution growths of zinc- rocks.[Book review]. .. ite in manganosite and of man- and Schwartz, G. M. Ge- ganositein periclase...... 207,534 ology of the anorthosites of Oriented inclusions of the Minnesota coast of Lake staurolite, zircon and garnet Superior.[Bookreview] .'. 90 in . Skating crystals Gruner, J. W. Cristobalite in ben- and their significance. 69 tonite. . 587 ...... 207,208 with McConnell, D. Car- bonate-apatite from Magnet Galbraith, F. W, Identification of Cove,Arkansas...... 157 the commonertellurides..... 368 Guild, F. N., memorial of. (Short). 181 =- and Kuhn, T. H' New oc- Guimardens,C. P... 440 currenceof dioptasein Arizona 708 Gypsum occurrence, unusual, at Galenobismutite and "lillianite.tt Kalgoorlie, W. Australia. (Pri- (Berry). 726 cler)... 591 Garnet...... 77 Garnet in amygdules. 553 Ilaff, J. C. Use of Wulff net in Geologyof the anorthositesof the mineral determination with Minnesota coast of Lake Su- universal stage. . 689 perior. (Grout, Schwartz) Halloysite(Ayres). ....203'433 [Book review] 90 A..... 311 Gerasimovsky,V. I. 253,380,440'504 Hargreaves, Head,J.L...... '.-..... 377 Glass, J. J. with Goddard, E. N., II. Radioactive cerite near James- Hess, H. H. and Phillips, A. town,Colorado.... 381 Optical properties and chem- Goddard, E. N. and Glass' J. J. ical composition of magnesian Deposits of radioactive cerite orthopyroxenes...... '.. 271 aPPendix to near Jamestown,Colorado. ' ' 381 Hey, M. H. Second INDEX 833

catalogue of meteorites. [Book Knopf, A. Memorial of William E. reviewl 768 Ford... 174 311 Kolskite.(Efremov).. .. 155 Higginsite (r-ray data) . . 456 Kornerupine, iron rich, from Port Hiller,J. E...... 312 Shepstone,Natal. (de Villiers) 379 Hironaka,Y...... 439 Kdttigite(angle table).. . . . 804 Ilodge, E. T., witl Bogue, R. Cas- Kraus,E.H...... 209 cade andesitesof Oregon. . . . 627 Kreuzbergite(: fluellite). 626 Hoernesite. 807 Ksanda, C. J. with Fleischer, M. Hopeite (optical and r-ray data). . 795 Dehydration of pollucite . . 666 Howard, A. D. Zoning in spheru- Kuhn, T. H. with Galbraith,F. W. 1ites...... 61+ New occurrenceof dioptase. 708 Howland, A. L, Specularite-alunite mineralization at Hickeys Lamprobolite, a new name for ba- Pond, Newfoundland. 34 saltic hornblende(Rogers) 826 Hunt, W. F. Book reviews.560,167-768 Larsen,E. S. Book reviews 308 Hydromagniolite.(Efremov)...... 313 Larsen, E. S. 3rd. Overite and Hydrosyalite.(Efremov)...... 313 montgomeryite, new minerals Ifydrous iron sulphide in California from Fairfield, Utah. . 315 crystalline limestone. (Lauder- - and Montgomery, A. Ster- milk, W'oodford) 4I8 rettite, a new mineral from Fairfield, Utah.. 513 Iceland spar in New Mexico. (Kel- Laudermilk, J. D. and Woodford, Iev)... .. 357 A. O. Ilydrous iron sulphide in Iceland spar in Taos Co., New California crystalline limestone 418 Mexico.(Johnson).... 151 Lepierre,C.. 155 Inuzuka, E[. Device for measuring "Lillianite." (Berry) . 726 extinction angles .. .. 735 Lindgren, W., memorial of. (Buer- Inyoite (crystallographicdata) ... 549 ger) . 184 Iowa loess materials, petrogaphy Loess, Iowa, petrography of. (Cuth- (Cuthbert). of...... 206,519 bert)...... 206,519 Lovozerite.(Gerasimovsky).... . 504 Jamesonite, structural crystallog- Lubbock meteorite,Lubbock, Texas, raphy and composition of. flow structure in. (Wald- (Berry) 204 schmidt) 528 H. Iceland spar in Johnson, J. Lukesh, J. A. Optical evidenceof Taos County, New Mexico. 151 twinning in arsenopyrite.. . 619 formula of . (Fisher) . . 291 Jordanite, _ Thermal decomposition of arsenopyrite. 539 Kaiser, E. P. Models of ternary sys- tems...... 374 T. 154 Keller, W. D. Aurichalcite in Mis- Madigan, C. Magnesian orthopyroxenes, optical souri...... t/.) Kelly, V. C. Iceland spar in New properties and chemical com- (Iless, Mexico. 357 position of. Phillips). . 271 Kemp'sHandbook of rocks.(Grout) Magnesiumapjohnite.. 254 [Bookreview]..... 767 Magnesiumhalotrichite... 254 Kernbauer,F.. 155 Magnophorite.(Prider).... 353 Kerr, P. F.... 208 Manganphlogopite.(Yosimura)... 156 Kimura,K...... 439 Manganpickeringite.. 254 834 INDEX

Marble, J. P. Allanite from Bar- Mineralogie in Sachsenvon Agri- ringer Hill, Llano Co., Texas 168 cola bis Werner. (Fischer) Mathews, E. B.. 209 [Bookreview].. ... 379 Maucherite. (Peacock) 379 Monazite (optical data) 401 McConnell, D. Clinobarrandite and Montgomeryite, new mineral from the isodimorphous series varis- Fairfield, Utah. (Larsen) . . JIJ cite-metavariscite. .210,719 Montgomery, A. with Larsen, E. S. - and Gruner, J. W. Carbon- 3rd. Sterrettite, a new mineral ate-apatite from Magnet Cove, from Fairfield, Utah. 513 Arkansas 157 Montmorillonite,a, 0, T, 6, and e. Mclaughlin, T. G. dikes (Efremov) 313 of Bridger Mts., Wyoming. . 46 Murdoch, J. Crystallography of Mehmel, M. Nomogramme zum ulexite.... .210,754 Mineralbestimmen mit Rcint- - and Webb, R. W. Notes on genstrahlen. [Book review]. . . 153 someminerals of SouthernCal- Meier, A. E. .. 2lO ifornia.II.. 549 Meixner, H.. . 254 Messelite (chemical and rc-ray data) 790 NaAlSiOrCaSiO3system. (Foster) 207 Metavariscite(r-raydata) ... 721 Nahcolite(Foshag) .. 769 Meteorite rusts, some constituents Nakai, T. 312 of. (Buddhue). 435 New mineralsdescribed: Meteorites: Bartlett, Bell Co., Bellingerite.. .. 505 Texas...... 497 Clinobarrandite .. 719 Boxhole 154 Gratonite..... 255 Lubbock, Texas 528 Montgomeryite. 315 Shallowater.... 779 Overite. . 315 Meteorites, catalogue of . Sccond Pararammelsbergite 561 appendix. (Hey) [Book re- Sterrettite viewl 768 New mineral names. Michigan iron country, mineral 253,3r2, 380, 439, 504, 626, 7 r0, 7 68 notes from. (Ayres) 432 New York Mineralogical Club Microfilm sets of periodicals. . 305 . . . . 154,252, 310,377, 438 Microlite and stibiotantalite from Nomogramme zum Mineralbestim- Topsham, Maine. (Palache, men mit Rdntgenstrahlen. Gonyer). .211,411 (Mehmel) [Bookreview] .. '. 153 Millerite occurrence at Milwaukee, Nontronite. (Ayres) ..203,433 Wisconsin. (Bagrowski) 555 Norilskite. (Zviagincev) 710 Mineral identification simplified. (Smith) [Book review] 767 Odman,O.. .. 312 M ineralogicalSocietyof America : Olivinite (x-ray and crystallo- Constitution and by-laws. 246 graphicdata) . 453 List of correspondents, fellows. Oriented inclusions of staurolite, members and subscribers. . 218 zircon and garnet in musco- List of former officers and meet- vite. (Frondel) 69 ing places 21,7 Orthoclase, structure of. (Chao, Nominations for officers for l94l 624 Hargreaves,Taylor) . . 311 Proceedings of 20th annual meet- Osborn,E. F... 2tl i.rg 197 Overite and montgomeryite' new *'::i'::"i' minerals from Fairfield' Utah. 1:'::"' i::H 311328 (Larsen). 315 INDEX 6JJ

Pabst, A. Cryptocrystalline pyrite granite at Glen Riddle, Penna. from Alpine Co., Calif. 425 (Meier). 210 Bookreview... 249 Pollucite, dehydration of. (Flei- Palache, C. Cuprobismutite-a scher,Ksanda)...... 666 mixture ....2t1,611 Postil,A.W..... 309 -'_ and Fisher, D. J. Gratonite, Pough, F. II. Willemite morphologJr a new mineral from Cerro de and paragenesis at Balmat, Pasco,Peru. 255 N. Y.. . 488 and Gonyer, F. A,, Micro- Prider, R. T. Unusual occlurence Iite and stibiotantalite from of gypsum at Kalgoorlie, W. Topsham,Maine. ...21I,411 Australia...... 591 Parahopeite...... 788 . . .253,254 Pararammelsbergite. . 561 Prince,A. T.. 212 Peacock, M. A. Goldschmidtine, Projection protractor, new. (Fisher) 207 identicalwithstephanite... 372 Pseudopyrophyllite. (Sedletsky, 379 Yussupova) 768 - and Dadson, A. S. Ram- Pyrite, cryptocrystalline, from Al- melsbergite and pararammels- pineCo.,Calif.(Pabst)...... 425 bergite, distinct forurs of Pyrobelonite(r-ray data). . 460 NiAsz...... 211,561 Pegmatite dikes of Bridger Mts., Quartz crystals, detrital dihexa- Wyoming. (Mclaughlin). . .. . 46 hedral, in sedimentin Colom- of Keystone area. bia, S. A. (Butler). 145 (Apsouri)...... 203 Quartz, method for distinguishing Pegmatites in town of Newryn from untwinned feldspar, with Maine, origin of. (Shaub) . 673 universal stage. (Doeglas).. 286 Petrology of Skaergaardintrusion, Kangerdlugssuaq,E. Green- Radioactivestandards. 303 land. (Wager, Deer) [Book Radioactivity of sedimentaryrocks reviewl.... 308 and associated petroleum, Phemister,J.. , 379 (Goodman,Bell, Whitehead).. 208 PhiladelphiaMineralogical Society Ramdohr,P...... 312,626 . 251,309,439,560Rammelsbergite and pararammels- Philbrick,S. S.. . 212 bergite, distinct forms of NiAs:. Phillips, A. H. with Hess, EI. E[. (Peacock,Dadson)...... 2lL,56l Optical properties and chemi- Ramsdell,L. S...... 212 cal composition of magnesian Book review. 153 orthopyroxenes...... 211 Rapakivi of Head Harbor Island, Phosphate-sulphateof aluminum, Maine. (Terzaghi). .. 111 probably new, from Utah. Rarer metallic constituentsof some (Schaller).. . . 213 American igneousrocks. (San- Phosphophyllite.. .. 792 dell,Goldich). 213 Phosphorriisslerite.(Friedrich, Ro- Reddingite(r-ray data) 752 bitsch).. . 313 Refractive index liquids, notes on. Pigeonites, deterrnination of optic (Bosazza) 299 axial angle and extinction an- Reversiblephotosensitivity in some gle in. (Turner). . . 82r artificial materials containing Pillewizer,W..... 254 rutile.(Williamson)... 311 Plagioclase-richcorundum bearing Richmond, W. E. Crystal chemistry pegmatites from desilicated of tfie phosphates, arsetrates 836 INDEX

and vanadates of the type Smith, O. C. Mineral identification AzXOa(Z) ...... 441 simplified. [Book review] . . 767 andWolfe, C. W. Crystallog- Sodium bicarbonate (nahcolite) raphy of dolerophanite. ...212,606 from Searles Lake, Calif. Robitsch,J.. .. . 313 (Foshag) 769 Rogers,A. F. Lamprobolite,a new Southern Caliiornia, some minerals name for basaltic hornblende. 826 from. (Murdoch, Webb) . . 549 .. 213 Space groups, 230, elementarY de- Roselite...... 750 rivation of . (Donnay) 206 Roy, P. C.. . 380 Spectrochimica Acta. IBook review] 250 Russell,A.. 311 Specularite-alunite mineralization Rust, G. W. Geologic occurrence at Ilickeys Pond, Newfound- of gratonite at Cerro de Pasco, land. (Howland). .... 34 Peru.. 266 Spence, II. S. Uraninite and thu- Ruthenosmiridium (Shin'ichi). 440 cholite from Pied des Monts' CharlevoixCo.,Quebec ..... 7tr Sand calcite crystals, Kern Co., Spencer, L. J.. . . l.)4 Calif. 551 Spherulites, zoning in. (Howard). 614 Sandell,E. B. . 213 Spodumenen decomPosition and al- Sanidinecrystals, large, from Utah. teration of, bY water. (Arm- (Stringham,Williams) 214 strong). 810 Sarkinite (crystallographicand r- Stahmann, M. A. with Dimler, R. J. ray data) 467 Mount f or universal stage Sawyer,R. A. Book review. 250 study of fragile materials 502 Schairer,J. F.. . Ztl Staurolite. . 70 Schaller,W.T... .. 213,214 Stephanite morphologY. (TaYlor) 52l Scholz,A...... 626 Sterrettite, a new mineral from Schwartz,G. M. and Grout, F. F. Fairfleld, Utah. (Larsen, Mont- Geologyof anorthositesof the gomery). . . Minnesota coast of Lake Su- Stewart, D. Jr. Book review. 625 perior. [Book review]. . 90 Stibiotantalite from ToPsham, Sedletsky,I...... 768 Maine. (Palache, GonYer) *tl ^y, Sepiolite,e, P, 6 and e.(Efremov) 313 Stiepelmannite. (Ramdohr, Thilo) . 626 meteorite, a new au- Shallowater Stillwell, C. W. Crystal chemistry. brite.(Foshag). .. 779 IBook review] 249 Shand,S. Book review. 767 J. Stilpnomelane, nontronite and hal- Shaub, B. M. Age of the uraninite loysite from northern Michi- from the Mclear pegmatite gan. (Ayres) . . .203,432 near Richville Station, St. Stringham, B. Occurrence of feld- LawrenceCo.,N.Y...... 480 spar replacing fossils 139 Origin of some pegmatites 214 in the town of Newry, Maine 673 EuroPean Shin'ichi,A...... 440 Structural control in val- Short, M. N. Memorial of Frank N. Pb-Zn ores of MississiPPi 203 Guild . 181 ley type. (Behre) Simpson, Edward S., memorial of . . 195 Strunz,H..... 626 Simpsonite.(Bowley)..... 313 Symplesite. 801 Skating crystals and their signifi- cance.(Frondel) .. .. 69 Tarr, William A., memorial of. Slawson,C. B... 2O9 (Connolly). 189 INDEX

Taylor, E. D. Morphology of colum- Uraninite and thucholite from Pied bitecrystals...... 123,214 des Monts, Charlevoix Co., Stephanitemorphology.... 327 Quebec. (Spence) 711 Taylor, G. Antarctica. [Book re- viewl . 625 Variscite-metavarisciteseries. (Mc- Taylor,J.H...... 378 Connell)...... 210,719 Taylor, L. E. R. 313 Veachite. 552 Taylor,W.H...... 311 Vigfusson, V. A. Equipment for Tchinglusuite(Chinglusuite), (Ger- doublevariation method of re- asimovsky). 253 fractive index determination. Tektites and silica glass.(Spencer) 154 I. Stage cell. II. Temperature Tellurides, identification of. (Gal- control 763 braitl) . 368 Vitaliano,C. . . 215 Tellurobismuthite, redefinition of. J.. Vivianite. 80.3 (Frondel) 208 Ternary systems,models of. (Kai- ser)... 374 Wadeite. (Prider) 254 Teruagfi, R. D. Rapakivi of Head Wager,L. R. and Deer, W. A. Pet- Harborlsland,Maine...... 111 rography of Skaergaardintru- Thibault, N. W. A simple dichro- sion, Kangerdlugssuaq, E. scope .... 8g Greenland.[Book review]. . . . . 308 Thilo, E.. 626 Wagnerite (chemical and r-(ay Thin sectionsof clays,new method data).. 470 for preparation of. (Weather- W'aldschmidt, W. A. Flow structure head).. 311 in the Lubbock meteorite, Thucholite from Pied des Monts, Lubbock,Texas.. 528

Quebec. (Spence)... I ll 'I'irodite. Weatherhead,A. V.. . 311 (Dunn, Roy)...... 380 Webb, R. W. with Murdoch, J. Tomlinson, W. H.. . 215 Notes on some minerals from Tdrnebohmite (optical data) ..... 400 SouthernCalifornia. IL 549 (Dittler, Torniellite. Kernbauer) . . 155 W'ells, R. C. and Allen, V. T. with Trichalcite (x-ray data) 799 Wentworth, C. K. Ceramic Tridymite optical properties, new clay in Hawaii 1 data on. (Durrell) 'W'entworth, 501 C, K., W'ells, R. C. and Triplite (r-ray data). 468 Allen, V. T. Ceramic clay in Triploidite (r-ray data) 469 Hawaii. I Tunell,G...... 215 Whitehead,W. L... 208 Tungsten arcs. (Kerr) 208 Willemite morphology and para- Turner, F. J. Determination of optic genesis at Balmat, N. Y. axial angle and extinction an- (Pough) 488 glesin pigeonites...... 821 Williams,N. C.. . 214 Ulexite, crystallography of. (Mur- Williamson,W. O...... 311 doch)...." .2t0,754 Wolfe, C. W. Classification of Unique diameters in crystallogra- minerals of the type A:(XOr)z phy. (Burfoot).. 206 .nlilro. .. .. 738,787 Uraninite from Mclear pegmatite IJJ near Richville Station, St. with Berman. II. Bellin- Lawrence Co., N. Y., age of. gerite, a new mineral from (Shaub)...... 480 Chuquicamata,Chile. 5U5 838 INDEX

-withRichrnond, w, E. crys- Yosimura,T....., 156 tallography of dolerophanite Yttrocolumbite.(Lepierre)..,.. 155 212,606 Yussupor.'a,S...... 768 \Moodford, A. O. and Laudermilk' D. Ilydrous iron sulphide in J, Zepharovichite(:wavelite). . . . 723 California crystalline lim€- new. (Gerasi- stotre.. 418 Zirconium silicate, movsky) 440 Wulfi net in mineral determination with the universal stage. Zones, zone-bundles and crYstal (Ilaff).. 689 systems' (Rogers) 213 Zoningin spheruliies. (Howard). . . 614 Yamagutilite. (Kimura, Hironaka) 439 Zviagincev,O. E.. . . 710