INDEX TO VOLUME 20 Leading articles are in bold face type; notes, abstracts and re- views are in ordinary type. Only minerals for which definite data are given are indexed.

Accessory mineral suites ln Andesite,altered (analysis).... 245 granites of Missouri. (Tol- Ankerites of Northumberland. man, Koch) 208 (Hawkes,Smythe). 314 Adamite from Gold Hill, Tooele Anorthite from California. Co., Utal. (Staples) .200, 37r (Miller) 139 Ahlfeldite. (Ramdohr). 678 Apophyllite from East Lothian. Albite (optical data)...... 235, (Anderson,Elder). 314 Alderman, A. R.. . 65 Architectural, Structural and Alexander, A. E. Opalized Monumental Stones of spherulesfrom Utah?. . . . . 602 Minnesota.(Thiel, Dutton) 208 [Book review]. 883 Alleghanyite, chemical forrnula Argillaceous sediments, tech- and crystal system. nique for investigating, @ogers)...... 25, t97 (Bray, Grim and Kerr). . . . 2O2 Allen, V. T. Memorial of Ste- Armstrong, E. J. Schroeckinger- phen Richarz. 184 ite from Bedford,N. Y.. . . 62 Almandine from Botallack, Arsenides and antimonides of Cornwall (analysis).Alder- Ni and Co, x-ray study of. man).. . 65 (Holmes) ...... 198 Aloisi, P. Application of deter- Arsenopyrite(crystals)...... 2l minants to crystallogra- Asbestos, barite, corundum, phv... . 400 rutile and vermiculite in a-monochlornapthalene:meth- Pennsylvania.(Stone).... 198 ylene iodide series.(Buer- Augelite from Mono Co., Calif' ger) .. 199 (Lemmon). 664 a-uranopilite.(Novddek)...... 813 Aurosmirid.(Zviagincev).... 740 a-uranotile.(Novddek). 813 Austinite, a new arsenate from Arnazonite aplite dike from -l o:11'lliili%,,,, Laborador.(Wheeler). . . . +4 "'11' Amber from Manitoba. (Walk- er)...... 195 Bain,G.W..... 205 Amick,H. C.. . 204 Bannister,F. A....65, 316,317, 811 Aminoff,G...... tlJ Barite in red beds in Colorado. Amphibole from Purcell sills, (Howland) 199 British Columbia (analy- Barnes, W. II. an

209 CaO-MgO-SiO, system. (Tay- Bauer,L. H.. . . . 197 lor, Williams) 209 Behre,C. H., Jr. 202 Carbon dioxide determination, Benn,J. H. Occurrenceof viv- newapparatus for. (Hey). . 314 ianite in District of Co- Celestite and fluorite at Clay lumbia..... 311 Center, Ohio, occurrence Berman,H. 197,2Il and origin of. (Morrison) 780 Bernal,J. D. 811 Celestite from Chittenango Bertrandite. 747 tr'alls,N. Y. (Thibault) . . . 147 Beryl (analysis and optical Ces6ro,G. 541 'W'illiams, data).. . . . l7 , 234, 747 Chapman,R. W. and Biotite (analysis and optical C, R. Evolution of White data).. 20, 512, 748 Mountain magma series 502 Biotite system.(Winchell). . 773 Chloropal. 475 Bismoclite.(Mountain). 474,813 Chondrodite from Inverness- Bismuth minerals, new, from shire.(Itead, Double) 314 S.Africa. (Mountain) . . 474 Chrom-beidellite. ' (Serdiu- Bismuth oxyhalides, crystal chenko) 541 structure of. (Bannister) 65 Chrom-nontronite. (Serdiu- Blockite.(Ramdohr) 678 chenko). 541 Blggild, O. B. . 138 Chromite group. (Wishart) 2r0 Blgvad, R.. 137 Cobalto-sphiirosiderite.(Reiss- Boksputite.(Mountain) +74,814 ner) 814 Bowen, N. L. and Schairer, J. F. Colony, R. J. Schiller struc- Grrinerite from Rockport, ture .201, 828 Mass., and a seriesof syn- .. 195 tlreticfluor-amphiboles. . 543 Color photography in miner- . . . 197, 20r, 208 alogy. (Shaub). 199 Bravais space-lattices,deriva- Color reactionsin micro-chemi- tion of. (Ramsdell) 2ll cal determinationof miner- Bray, R. H.. . . . 202 als.(Watson) 65 Bryant, W. M. D. Crossed Coloradopegmatites.(Landes). 319 axial plane dispersion in Conant, L. C. Opticallv positive two organic compounds. cordieritefrom New Hamp- A peculiar extinction phe- shire. . 310 nomenon. 281 Contactmetamorphic zone from Buerger, M. J. Unit cell and Little Belt Mts., Montana. spacegroupof.reaLgar. 36 (Taylor). 12O 196,212 Cooke,S. R. B. and Doan,D. J. Buerger,N. W.. 199 Mineragraphy and x-ray Burkeite, a new mineral from analysis of stainierite from Searles Lake, Calif. Swansea Mine, Good- (tr'oshag) 50 springs,Nevada. 27+ Burwash,E. M. 205 Copper ore minerals, identifi- Butler, R. D. 203 cationof,byx-rays.(Waldo) 575 Cordierite, optically positive, Calaverite,crystal structure of. from New Hampshire. (Tunell, Ksanda) 2Il (Conant) . . . 310 JOURNAL MINERALOGICAL SOCIETY OF AMERICA 889

Crazy Mountains of Montana. formation by means of (woltr) t93 heavyminerals.(Alexander) 208 Crestmore,Calif., paragenesis Distribution of heavy minerals of mineral assemblage at. in the clays of New JerseY. (Daly).. 638 (Ilawkins) .208,334 Crossed axial plane dispersion Doan, D. J. and Cooke,S. R. B' in two organic compounds. Mineragraphy and x'raY A peculiar extinction phe- analysis of stainierite from nomenon.(Bryant). ... 28t Goodsprings,Nevada.... 274 Crystal cavities in lavas from Donnay, J. D. H. Application the Hawaiian Islands. of determinantsto crYstal- (Dunham)...... 880 lography 601 Crystal classification and sym- 2tl bolism.@isher)...... 21I,292 Double,I. S.. 3I4 Crystal forms, tabulation of, Drosdoff, M. and Truog, E' and discussion of form Removal of iron oxide names.(Rogers)...... 838 coatingsfrom minerals. ' . 669 Crystal growth and solution Dunham, K. C. Crystal cavi- under local stress.(Russell) 733 ties in lavasfrom Hawaiian Crystal structure of zoisite 106 Islands. " ' 880 Crystailographic elements, Dutton, C. E. and Thiel, G. A. choiceof.(Peacock).. .. 212 Architectural, Structural Crystallographic expressionof and Monumental Stones the resultsof the theory of of Minnesota. IBook re- spacegroups. (Howard) 212 viewl..... 883

D'Achiardi,G.. . 403 Eardtey, A. J. Book review. 402 Dacite (analysis). 244 Edelsteineund Schmucksteine. Dahllite from Ishawooa, VIy- (Eppler) fBook review]. . 401 oming, spherulitic concre- Elder,S.. 3l+ tions of. (McConnell). . .200,693 Enargite and plumbojarositeat Daly, J. W. Paragenesis of the Picher, Oklahoma. (Ran- mineral assemblage at some)..... -200,799 Crestmore, Riverside Co., English, G. L. Getting ac- California. 638 quainted with minerals' DeLeenheer,L...... 813 lBook review]. 318 Denham,R. L. .. 202 Enstatite-hypersthene series, Determinants, application to revision of. (Walls) 474 crystallography. (Aloisi). . 400 Epidote, anomaliesin analYtical Determinants, application to determination of water in. crystallography. (Donnay) 601 (Smethurst) 811 Dickite and other clay miner- Eppler, A. and Eppler W. Fr. als, sf;ucture of. (Ksanda, Edelsteine und Schmuck- Barth) . 631 steine.[Book review] . . 401 Dickite from Pennsylvania Eppler, W. Fr. and Stutzer, O. (analysis). (Honess, Wil- Die Lagerstaetten der liams)...... 462 Edelsteine und Schmuck- Differentiation of Onondaga steine.[Bookreview]...,, 402 890 THE AMERICAN MINERALOGIST

Ettringite, composition and Geology of Western San Gabriel crystal structure of. (Ber- Mts. of California. (Miller) nal,Bannister)... 811 lBook reviewl. . . . 402 Gettingacquainted with nriner- Faratsihite... . 475 als. (English) fBook re- Ferri-paraluminite. (Pilipenko) 404 viewl . . . 318 Fisher, D. J. Crystal classifica- Ginorite.( D'Achiardi). 403 tion and symbolism... 211,292 Glass, J. J. Pegmatite minerals Fluid inclusions in sphalerite from near Amelia, Va,. . . . 7+r and galena from Joplin. 469 (Smith)...... 204 196 Fluor-amphiboles, synthetic. Glauconite and mica, structilral (Bowen,Schairer). . . ..197, 543 relationship of. (Gruner). 699 Fluorescence,petrographic use Goldich, S. S. and Tolmaa, C. of.(Quinn)..... 466 Granite, pegmatite and re- Fluorite and celestite at Clay placement veins at Gran- Center, Ohio. (Morrison). 780 iteville, Mo.. 229 Fluorite occurrence.(Russell). . 313 Golding,E...... 65 Fluorite 749 Graham, W. A. P. Occurrence Foshag, W'. F. Burkeite, a new of narsarsukitein Montana 598 mineral from Searles Lake, Granite, pegmatite a.rrdreplace- Calif...... 50 ment veins in the Sheahan Foster, L. V. 210 quarry, Graniteville, Mo. Fraser, D. M. Microscopic (Tolman,Goldich) ...... 229 investigation of Friedens- Granitic intrusion in the St. ville, Pa., zinc ore. . . . .203,45I Francois Mountain. ('fol- Friedel's law of mean indices. man, Denham). 202 (Donnay). 2II Greenalite, study of, (Joltiffe) Friedensville, Pa., zinc ore. 207,40s @raser). . .203,451 Greene, G. U. Occurrence of Frondel, C. Size of crystals .. . 469 sphaleriteatEllsworth, Ohio 882 Vectorial alteration of crys- Grill,E.. . 740 tals.... 852 Grim, R. E.. 202 Fulgerites, origin and occur- Groves,A. W.. . 316 rence in Atlantic coastal Gruner, J. W. Structural rela- plain. (Petty). 2A7 tionship of glauconite and Fusion relations of feldspath- mica... .. 699 oids, alkali feldspars and Structural relationship silica. (Schairer,Bowen) 201 of nontronites and mont- morillonite. 4lJ Garnet, spessartitic almandite Griinerite from Rockport, (analysis) 19 Mass., and a sefies of syn- Gehlenite(optical data). . . I24 thetic fluor-amphiboles. Genesisand structural relation @owen,Schaiier)...... 543 of Absaroka volcanics. Guarinite, clino and ortho. (Rouse). .. 206 (Ces6ro).. . 541 Genetic relations of sphalerite Guild, F. N. Piedmontite in in pegmatite.(Ross)...... 203 Arizona. 679 JOURNAL MINERALOGICAL SOCIETY OF AMERICA 891

Gypsum crystals from Alfalfa Hurlbut, C. S. Jr. Dark inclu- Co., Okla. (Merritt).. 674 sions in tonalite from southernCalifornia. 2O5,609 Hall,G. M... .. 199,20+ Hyalosiderite (analysis and Hastingsite (analysisand opti- optical data). . .. 512 cal data).. 512 Hydrocalumite.(Tilley)... 316 Hawkes,L..... 3t4 Hydrothermalm ineralizat ion at Hawkins, A. C. Distribution of Graves Mt. (Johnston). . . 201 heavy minerals in clays of" Hypersthenes, iron-rich, data Middlesex Co.,N.J.. . . .208,334 on. (Henry). 811 Hauyne-noseliteseries. (Barth) 209 Ifeavy minerals in clays of Igalikite.(Blggild). 138 Middlesex Co., N.J. Igneous assimilation and asso- (Ilawkins) 208,334 ciated contact metamor- Heaqr minerals in syenites of phism in Virginia mining PleasantMountain, Maine, district,N.M. (Lasky).... 552 discussionof. (Marsden). . I32 Ilmenite (analysis and optical Hedenbergite (analysis and data)... 512 optical data).. . 5lz International Tables for the Ifeineman, R. E. S. Petrog- determination of crystal raphy of the Roy, Harding structures. [Book review]. 739 Co.,N.M., meteorite... 438 Iron oxide coatingson minerals, Henderson, E. P. Steigerite, a removal of. (Drosdoff, new vanadium mineral .. 769 Truog). 669 196 Henry,N. F. M...... 811 Janite.(Thusutt)... 3I4 Iferderite from Topsham, Jarlite. (Blgvad). 137 Maine, crystallography of. Jarosite in tuff from Potosi, (Yatsevitch). .. ..t98,426 Bolivia.(Milton)...... 176 Herzenbergite.(Ramdohr). . 541 Johnston, W. D. Jr. 20I Hess,H. H. 2Ol t""o':l:: Hey,M. H.. .. 314 "li1:1*lillli';, *, Hisingerite. . . 482,483 flitchen, C. S. Pegmatites of Keller, W. D. Occurrence of tr'itchburg,Mass...... 1 mendoziteand tamarugite IIo, T. L. Rapid metlod for in Missouri 537 determination of plagio- Removal of bubbles clase by Fedorov universal from old thin-sections of stage...... 790 rocks.. 540 Holmes,R. J.. . . 198 Kennard, T. G. Spectrographic Honess, A. P. and Williams, examinationof smoky and F. J. Dickite from Pennsyl- ordinary quartz from Rin- vanla...... 462 con, Calif. 392 Hornblende(analysis and opti- Kerr, P. F. U-galena and urani- cal data).. ... Sl2 nite in Bedford, N.Y. cyrto- Howard, W. V.. 2lz lite.. +43 Howland, A. L.. l9g ...... 202,207 Hunt, W. F. Bookreviews..318,883 Klang, H.. 74O 892 THE AMERICAN MINERALOGIST

Klug, H. P., Pauling, L. and Lavas surrounding hot sPrings Tlinchell, A. N. CrYstaI in Lassen Volcanic Na- structure of swedenborgite. 492 tional Park, alteration of. Kiscellite. (Zechmeister,Toth, (Anderson). 240 Koch).. 315 Lemmon, D. M Augelite from Kobalt-oligonspat.(Reissner).. 814 Mono Co., Calif.. . 6& Koch,A.. 315 Lewis, J, V. Memorial of flenrY Koch, H. L. 208 S. Washington 179 Kraus, E. H. Book reviews Lightfoot,B.... 65 401,402 Lindgtenite, a new mineral. Krieger, P. Primary native (Palache)...... 187, 484 silver ores at Batopilas' Linearm ineralogicalari thmetic. Mex. and Bullard's Peak, (Parsons).... .197'388 N.Mexico. 715 Linnaeite group of Co-Ni-Fe- (Tarr) . 69 Ksanda, C, J., and Bartlt Cu sulfides. T. F. W. Structure of dick- L6ss und seine geotechnischen ite and other clay minerals 631 Eigenschaften. (Scheidig) zrl [Bookreview].... 63 KzSOr MgSO+, CaSOrsystem' Lusakite. (Skerl, Bannister, x-tay data on. (Ramsdell). Groves)...... 316 .209,569 Kyanite in "hornfels zone" of Macgregor,A. M.. . 65 Carn Chuinneag granite. Magnetite in Tennessee.(Hall). 199 (Tilley). 474 Mangan-ilmenite.(Simpson)... 403 Mangano-tantalite. . . 750 Lagerstaettender Edelsteine und Marsden, R. W. Discussionof Schmucksteine. (Stutzer, "Hearly minerals in the PleasantMoun- Eppler) [Book review]. . 402 syenitesof I32 Landes, K. K. Age and distribu- tain, Maine". 317 tionofpegnatites...... 81, 153 Matlockite.(Bannister).. .. (Wild, Schloss- ColoradoPegmatites... 319 Maxixeberyl Lane,A.C...... 731 macher,Klang, Roebling). 740 D. C. and Waldbauer' Lapparent,J. de 315 McCann, Larsen, E. S. and Miller' F. S. L, Crystal structure of 106 Rosiwal method and the zoisite. modal determination of McConnell, D. SPherulitic con- rocks.. 260 cretions of dahllite from Book review.. 675 Ishawooa,WYo.. . .' ...200, 693 Lasky, S. G. Igneous assimila- Mendozite, occurrencein Mis- tion and associatedcontact souri.(Keller) 537 metamorphism in the Vir- Merritt, C. A. GYPsum crYstals ginia mining district, N.M. 552 from Alfalfa Co., Okla.'.. ol+ (optical data).. . 124 Laudermilk, J. D. Soda-alunite Merwinite 137 from Molokai, Hawaiian Metajarlite. (Blgvad) Islands 57 Metallogenetic relations of Por- Laue syrnrnetry exhibited phyry and quartz diabase. 205 by orthogonal crYstals. (Burwash) (Barnes,Wendling)... '. ' 253 Metamorphic differentiation at JOURNAL MINERALOGICAL SOCIETY OF AMERICA 893

serpentine-country rock Nominationsfor officers,1936 677 contacts. (Phillips, Hess). 2Ol Proceedingsof 15th annual Metascolecite.(Hey). . 314 meeting. 188 Metasomatism associatedwith Progress report, committee greenstone-hornfelses of on affiliation.... 65 Cornwall. (Tilley) . 811 Proposedamendments to con- Meteoric stone, Mangwendi, stitution by by-laws... 811 Rhodesia,March 7, 1934. Mineralogical Society of Great (Lightfoot, Macgregor, Britain and Ireland.. . . Golding).... 65 . .. .64,313,474,812 Methylene iodide and c-mono- Mineralogy of silicosis. (Col- chlornapthaleneimmersion ony)..... 196 liquids.(Buerger)...... 199 Moehlman, R. S. Quartz para- Meyer, D. B. Sericite of un- morphsafter tridymite and usualcomposition...... 384 cristobalite. 808 Mica peridotite in Tennessee. Monazite from West Port- (Hall,Amick)..... 204 land Township, Quebec. Microcline(crystals)...... 13 (Spence,Muench) ..... 72+ Microcline. 751 Monazite. 753 Microlite . 75l Mongolian magmas,(Bain). . 205 Micropycnometric method for Monoclinic ethyl triphenylpyr- determining specific grav- rolone (optical properties). 289 ity of minerals. (Syromyat- Monticellite from San Ber- nikov)...... 364 nardino Co., Calif. and the Microscopeoptics. (Foster). 210 monticellite series. (Schal- MgO-CaO-SiO2system. (Tay- ler)...... 815 lor, Williams). 209 Monticellite(indices).. ... 138 M gO-FeO-SiOzsystem. (Bowen, Montrnorillonite and nontrotr- Schairer). 208 ites, stnrctural relationshiP MgSOr-KgSO-rCaSOr system. of. (Gruner). 475 (Ramsdell). 569 Morencite. .. 475 Milajarlite. (Blgvad). 137 Morinite from Black Hills peg- Miller, F, S. Anortlite from matite. (Runner). 196 California. 139 Morrison, R. B. Occurrence and and Larsen, E. S. Rosi- origin of celestite and wal nethod and modal fluorite at Clay Center, determinationof rocks. .. . 260 Ohio..... 780 Miller, W. J. Geologyof West- Mountain, E. D.. 474,813,814 ern San Gabriel Mts. of Muench, O. B. and Spence, California.[Book review]. . 402 H. S, Monazite from Milowite. (Wilson). 678 Quebec. 724 Milton, C. Jarosite in tuff from Mullite, crystallography of Potosi,Bolivia L76 (Berman) ...... 2lI Mindigite. (Deleenheer).. 813 Murnpeowie (South Australia), M ineralogicalSocietyof America : a granulartype of meteoric List of fellowsand members. 216 iron.(Spencer) . . 64 List of former officers and Muscovite (analysisand optical meetings...... 215 data)...... 20,235,754 894 TE E AMERICAN MIN ERALOGIST

Mylonitic sphalerite from Pegmatites of Fitchburg, Mass. Friedensville, Pa. (Butler). 203 (Hitchen)..... I Perthite (analysis). 233 Narsarsukite, occurrence in Petty, J. J. .. 207 Montana (analysis). (Gra- Phenacite, morphologyfrom two ham). .... 578 new occurrences.(Pough)198, 863 Naujakasite. (Blggild). 138 Phenacite..... 756 New mineral names. .. 137,314,403, Philadelphia Mineralogical So- 541,67 8, 740,8r3 ctety. . New York Mineralogical Club. 604 . . . . 136,313,401,542, 604, 810 Nontronites and montmoril- Phillips,A. H. 2OI lonite, structural relation- Piedmontite in Arizona. (Guild) 679 ship of. (Gruner). 475 Piedmontite from Los Angeles Northrop, S. A. Thulite in New Co.,Calif. (Simonson).... 737 Mexico..... 805 Pilipenko,P.P...... 40+ Noselite-hauyneseries.(Barth) 209 Pinguite. 475 Nov6dek,R...... 813 Plagioclase, rapid determina- tion by universal stage. Oligoclase (optical data and (Ho)... 790 analysis)...... l7 Plane groups, application to Opalized spherulesfrom Utah? interpretation of Weissen- (Alexander) 602 berg photographs. (Buer- Olivine (analysis). 511 ger).. . 212 Plumbojarositeat Picher, Okla. Pachnolite(opticaldata)...... 324 (Ransome). ....200,799 Palache, C. Additional notes on Pough, F. H. Morphology of pseudobrookite...... 660 phenacite from two new Lindgrenite, a new min- occufrences..... 198,863 eral...... 187,+84 Prehnite (optical data). . . 123 Palmer, R. N. Abnormal sur- Prosopite(optical data). .. . . 324 face structure of quartz Pseudobrookite.(Palache).. 660 lens...... 129 Pseudosillimanite.(Lapparent) 315 Parsons,A. I-, Linear minera- Pyroxene group, further studies logicalarithmetic...... 197,388 in. (Winchell)...... 795,562 Paragenesis of mineral assem- Pyroxmangite from Idaho. blage at Crestrnore, Calif. (Henderson,Glass)...... 196 (Daly)... . . 638 Pauli'g, L., Klug, H. P. and dolerites and tholeiites 'Winchell, Quartz A, N. Crystal of Scotland(Walker)... 474 structure of swedenborgite 492 Quartz lens, abnormal surface Peacock, M. A. Topaz from structureof. (Palmer).. .. 129 Devil's Head, Colorado.196,354 Quartz paramorphs after tridy- 212 mite and cristobalite. Pegmatite minerals from near (Moehlman)...... 808 Amelia,Va. (Glass)...... 741 Quartz, smoky and ordinary Pegnatites, age and distribu- from Rincon, Calif., spec- of.(La:rdes). ....81,153 trographic examination of. Pegmatites, Colorado (Landes) 319 (Kennard) 392 JOURNAL MINERALOGICAL SOCIETY OF AMERICA 895

Quinn, A. Petrographic use of and solution under local fluorescence 466 stress. .. 733

Ramdohr,P. .541,678 Sahlinite.(Aminoff) ... .. 315 Ramsdell, L. S. X-ray study of Scapolite 649 the systemKzSOa, MgSOr, Scawtite (optical data).. . .. 126 CaSOa.... 209,569 Scawtite.(Tilley). . 403 - Book review 739 Schairer, J. F., antl Bowen, 2rr N. L. Griinerite lromRock- Ransome, A. L. Enargite and port, Mass., and a seriesof plumbojarosite at Picher, syntheticfluor-amphiboles. 543 Okla...... 2A0,799 . . . .201,208 Read,H. H.. 314 Schaller. W. T. Monticellite Realgar, unit cell and space from San Bernardino Co., groupof. (Buerger)...... 35 Calif., and the monticellite Reissner,R.. . 814 series.. 815 Replacement in filled fissure Scheelite-beryl deposit at veins.(Shaub)...... 875 Oreana,Nev. (Kerr).. .. 207 Repossite.(Grill). . 740 Scheidig, A. Der Ldss und Rice, H. M. A. Amphibole from seine geotechnischen Ei- Purcellsills, British Colum- genschaften.IBook review] 63 bia...... 307 Schillerstructure. (Colony). 201, 828 Richarz, S., memorial of. (A1- Schlossmacher,K...... 740 len)...... 184 Schroeckingeritefrom Bedford, Riebeckite(analysis and optical N.Y.(Armstrong)...... 62 data). 512 Scolecite.(H"y)...... 3I4 Rocks from Adelia Land and Senstius,M. W. Book review.. 63 the Antartic archipelago. Sepiolite (analysis and optical (Stewart) 206 data)...... 651 Roebling,W. .. 740 Serdiuchenko,D. P...... 541 Rogers, A, F. Chemical formula Sericiteof unusual.o-po.itiorr. and crystal system of alle- (Meyer) 384 ghanyite...... 25,197 Shaub, B. M. Replacementin - Tabulation of crystal filledfissureveins.. . .. 87s forms and discussion of 199 form names. . . 838 Siderite,-ungunif"-u. (a.atY- r9r,zto sis).. . . 379 Rosiwal methodand the modal Silica framework crystals and determination of rocks. their stability fields. (Larsen,Miller)...... 260 (Buerger) 196 Ross,C. S...... 203 Silver ores, primary native' at Rouse,J. T... 206 Batopilas, Mexico, and Roy, Ilarding Co.,N.M., mete- Bullard's Peak, N.M. orite, petrography of. (Krieger)..... 714 (Ileineman). 438 Simonson, R. R. Piedmontite Runner,J.J.. ... 196 from Los Angeles Co., Russell,A... . 313 Calif.. . lJl Russell, G. A. Crystal growth Simpson,E. S... . 403 THE AMERICAN MINERALOGIST

Size of crystals. (Frondel). . . . 469 ture of. (Pauling, Klug, Skerl,A. C. .. 316 Winchell). 492 Smethurst,A. F.- 811 Syngony, use of term in geo- Smith, W. S. T . 204 metrical crystallography. Smythe,J. A.. . . 314 ( Rogers). 210 Soda-alunite from Molokai, Syromyatnikov, F. V. Micro- Hawaiian Islands.(Lauder- pycnometric method for milk) 57 determination of specific Spence, H. S. and Muench, gravity of minerals. 364 O. B. Monazite from West Portland Township, Que- Tamarugite, occurrencein Mis- bec.... 724 souri.(Keller). .).t / Spencer,L. J.... 64 Tarr, W. A. Linnaeite group of Spessartite. 757 Co-Ni-Fe-Cu sulfides. Spezielle Petrographie der Taylor, J. H. Contact meta- Eruptivgesteine, ein No- morphic zone from Little menklatur-kompendiumin Belt Mts., Mont.. . t20 Auftrage der deutschen Taylor,N. W... .. 209 Mineralogischen Gesell- Technique for investigation of schaft. (Trdger) [Book argillaceous sediments. reviewl...... 675 (Bray, Grim, Kerr). . . 202 Sphalerite, occurrenceat Ells- Tengerite. 728 worth,Ohio.(Greene).... 882 Tetradymite from Inyo Mts., Staples, L. W. Adamite from Calif. (Webb). . . 399 Gold Hill, Tooele Co., Thibault, N. W. Celestite from Utah...... 200,371 ChittenangoFalls, N'Y.. . . t47 Austinite, a new arse- Thiel, G. A. and Dutton, C. E. u"*':li Architectural, Structural i:* ":i':l'*,,,,,n, and Monumental stonesof 200 Minnesota. [Book review]. 883 Stainierijeiro- s*"ore" rvrirr", Thin-sectionsof rocks, removal Goodsprings,Nev., miner- of bubblesfrom. (Keller). . 540 agraphy al.d x-tay analysis Thugutt,S. J...... 3r4 of. (Cooke. Doan). 274 Thulite in New Mexico. (North- Stark,J.T...... 202 rop) 805 Stearn, N. H. Stibnite in quartz 59 Tilley,C. E. ..316,403,474,81r Steidlmann,E.. . 206 Todorokite.(Yoshimura).. .. 678 Steigerite, a new vanadium Tolman, C. and Goldich, S. S. mineral. (Henderson). 769 Granite, pegmatite and re- Stewart, D. Jr. 206 placement veins in Shea- Stibnite in quartz. (Stearn). . 59 ha:r quarry, Graniteville' Stilpnochloran..... 475 Mo...... 229 Stone,R. W.. .. 198 ... ..202,208 Stutzer, O. and Eppler, W. Fr. Tomichi Dome flow. (Stark, Die Lagerstaetten der Behre)..... 202 Edelsteine und Schmuck- Tonalite of southern California' steine. IBook review]. .. . . 402 dark inclusions in. (Hurl- Swedenborgite, crystal struc- but)... .205,609 JOURNAL MINERALOGICAL SOCIETY OF AMERICA 897

Topaz from Devilts llead, Colo. Walls, R.. 474 (Peacock). ...196,354 Warner, T. W. Jr. Spectro- Topaz. 758 graphic analysis of tour- T6th. G.. 315 malines with correlation of Tourmalines, spectrographic colorandcomposition..... 531 'Washington, analysis of, with correla- f[. S., memorial tion of color and composi- of. (Lewis)..... I79 tion. (Warner) 531 Watson,J. A.. . . 65 Tourmaline. 12 Webb, R. W. Tetradymite from Travertine near Lexington, Va. Inyo Mts., Calif. 399 (Steidtmann). . . 206 Wendling, A. V. and Barnes, Tridymite(opticaldata)...... 242 W, II. Laue summetry of Triphenylbismuthine dichloride orthogonalcrystals.... 253 'Wheeler, (optical properties)... .. 285 E. P. 2ntl. Amazonite Triiger, W. E. SpeziellePetro- aplite dike from Labrador. 44 graphie der Euruptivge- White Mt. magma series, steine, ein Nomenklatur- evolution of. (Chapmant kompendium in Auftrage Williams)...... 502 der deutschen Minera- White Raven Mine, W'ard, logischen Gesellschaft. Colo., minerals of. (Wahl- [Book review] 675 strom)...... 377 Tromnau,H. W... 740 witd.G.o...... 740 'Williams, Truog, E. and Drosdoff,M. Re- C. R. and Chapman, 'W. moving iron oxide coatings R. Evolution of White fromminerals..... 669 Mt.magmaseries...... 502 Tunell,G...... 2Il Williams, F. J. and Honess, A. P. Dickite from Penn- sylvania...... 462 U-galena and uraninite in Berl- 209 ford, N.Y., cyrtolite. (Kerr) 443 Wilson,j. N. . . .. 678 Winchell, A. N. Biotite system. 773 Vectorial alteration of crystals. Further studies in the (Frondel).. ... 852 pyroxenegroup...... t95,562 Klug' Vivianite, occurrence in Dis- Pauling, L, and of trict of Columbia.(Benn). 311 H. P. Crystal structure swedenborgite...... 492 Wishart,J.S...... 210 'Wahlstrom, E. E. Minerals of Wolff, J. E. Crazy Mts. of White Raven Mine, Ward, Montana 193 Colo... 377 'Waldbauer, L. and McCann, Xonotlite from Franklin Fur- D. C. Crystal, structure of nace. (Bauer, Berman). . . 197 zoisite...... 106 X-ray study of arsenides and W'aldo, A. W. Identification of antimonidesof Ni and Co. copper ore minerals by (Holmes) ...... 198 means of x-ray patterns. . . 575 X-ray study of system KzSOr, Walker,F...... 474 MgSOa, CaSOr. (Rams- Walker,TL...... 195 dell)...... 209,569 TE E AMERICAN MIN ERALOGIST

Yatsevitch, G. M. Cryst4llog- Zeolites IX. Scolecite, meta- raphy of herderite from scolecite.(Hey). . 3t4 Tcipsham,Maine...... 198,426 Zinnwaldite.. . . 7s9 Yoshimura,T...... 678 Zoisite, crystal structute of, (Waldbauer,MeCann)... . 106 Zechmeister,L. 315 Zviagincev,O...... 740