TNDEX TO VOLUME 38Leading articles are in bold face type; notes, abstracts, and reviews are in

ordinary type. Only minerals for which definite data are given are indexed.

a-Eucryptite problem. (Mrose) 353Abell , J. F., with Richter, D. H.

A simple high-temperaturemicroscope heating stage.. . . 1269

Acanthite crystals, unusual synthe-sis of. (Bannister). . . 397

Adams, J. W. with Glass, J. J. Gen-thelvite crystal from El pasoCo., Colo.. 858

Afwillite from Crestmore, Califor-nia. (SwitZer, Bailey). 629

Ahrens, L. H.. . 356A l b e e , A . L . . . . . . . . . . . . 3 2 7A l d r i c h , L . T . . . . . . . . . 3 2 7 , 3 3 3Alkali silicates, crystal geometry

o f . CDonnay, Donnay) . . . . . . 163Aiien, R. D. and Kramer, H. Oc-

currence of bassanite in twobasins in southeastern Cali-fornia. . . . 1266

Allen, V. T. and Fahey, J. J. Rho-donite, johannsenite and fer-rod:r johannsenite at Vanadi-um, New Mexico. 893

Allophanes from Lawrence County,f n d i a n a . ( W h i t e ) . . . . . . . 6 3 4

Alteration and uianium mineraliza-tion, Marysvale, Utah. (Kerr,Brophy, Dahl, Green, Wool-ard).. . 347

Altschuler, Z. 5.. 329Amphiboles, role of water in.

(Whittaker) 73+Amygdules, giaat, in andesite from

the southern Quitrnan Moun-tains, Teras. (Ingerson).. . . . . 1057

Anderson, A. L.. . . 328Anthohy, J. W. Memorial bf Max-

well N. Short.. 309Armstrong, F. C.. . 329Augelite from pegmatites in New

Hampshire. (Seaman) 729

Bailey, E. H. with Switzer, G.Afwillite from Crestmore, Cal. 629

Baker, G. Ilvaite and prehnite in

m i c r o p e g m a t i t i c d i o r i t e ,SoutheastPapua.. . . 840

Bann is te r , F . A . . . .397,734Barbosa, A. L. de M. with Lind-

berg, M. L. and Pecora, W. T.Moraesite, a new hydrousberylliirm phosphate fromMinas Gera is , Brazr l . . . . . . . 1126

Barium feldspar, new occturence atOtjosondu, S. W. Africa, andan x-ray method of deterrnin-ing composition of hyalophane.( V e r m a a s ) . . . . . . . . 8 4 5

Ba, Sr, Sc andZr in chondrites andultramafic rocks. (Pinson,Ahrens). 356

Bar low, I . H . . . . . 328Barnes, W. H. with Qurashi,

M. M. A note on cone axis andupper level precession photo-graphs. 552

- The structure of pucher-ite, BiVOr. 489

- and Berry, L. G. The spacegroup of conichalcite. 557

Barthauer, G. L., Rulfs, C. L. andPearce, D. rff. Investigation ofthucolite. 802

Baryte, morphology of. (Seager). . 397Bassanite ociurrence in two desert

basins in southeastern Cali-fo rn ia . (A l len , Kramer) . . . . , 1266

Bastnaesite, parisite, roentgenite,and synchisite, crystallographyof . (Donnay, Donnay) . . . . . . . 932

B a t e , G . L . . . . . . 3 2 9Bates, T. F., with Sand, L. B,,

Endellite, halloysite, and kao-linite, difierential thermalana lys is o f . , . . .

.355 , 358Bauer, L. H. with Frondel C, Man-

ganpyrosmalite and its poly-morphic relation to friedelitea n d s c h a l l e r i t e . . . . . . . . . . . . 7 5 5

Baumauerite, x-ray data. 330

r285

t286

Bavenite problem. (Fleischer'Switzer). 988

Beck, C.'W., with Givens, D. 8.,Ch ino i te , anewminera l . . . . . I9 I

" 329Beckmann, W. . . . . 355 ,357Becquerelite and billietite, status

of. (Frondel, Cuttitta). . . .339, 1019Belt series northwest of Idaho

batholith, structure and meta-somat ism o f . (H ie tanen) . . . . . 344

Ben jamin i te . (Nuf f ie ld ) . . . 550Berman, H., with Palache, C., and

Frondel, C., System of Min-eralogy of James Dwight Danaand Edward Salisbury Dana.(BookRev iew) . . . . . 419

Berman, J., with Laisen, E. S.' Jr.'and Waring, C. L. Zoned zir-

1 1 1 8330

Berry, L. G. with Graham' A' R.ard Thompson, R. M, Studiesof sulpho-salts : XVII-Canniz-zante..

- with Keating, L. F. Pisanitefrom tr'lin Flon, Manitbba. .

with Qurashi, M. M. andBarnes, W. H. The space groupof conichalcite

Beryllium minerals in the VictorioMountains, Luna CciuntY, NewMerico. (Holser) 599

Bever, J. E. Note on some mineraloccurrences in the Guffey re-gion, Colorado 138

Billietite and becquerelite, statusof. (Frondel, Cuttitta). . . 339, 1019

Block, S. with Evans, II. T.' Jr.Crystal structurd of montrose-ite, a vanadium member ofthed iasporegroup. . . . . . . 1242

8 1 o s s , F . D . . . . . . 3 3 0Blggild, O. B. The Mineralogy of

Greenland. (B.ook Review). . . 877Borate minerals, studies of, x-ray

crystallography of colemanite.(Christ). 4Il

Borate minerals, studies of' (II):

X-ray of crystallograPhY ofinyoite and meyerhofferite)r-ray and urorphological crYs-tallography of 2CaO '3BzOg'9II:O. (Christ). . . . . .

Bowie , S . H. U. . .Boyle, R. W. On the colour of black

anal grey quartz from Yellow-knife, Northwest Territories'Canada.

B r a d l e y , O . . . . . .Bradley, W. F., with Burst' J. F.

and Graf, D. L., Crystal chem-istry and differential thermaleffects of tlolomite

B r i g g s , L . I . . . . . . . . ' . .Br ind ley , G. W. . . . . .Brobs t , D . A . . . .Brophy, G. P.. .Buddington, A. F. and Leonard'

B, F. Chemical PetrologY and

912

J l 6

872

mineralogy of hornblende innorthwest Adirondack gralxiticrocks . . 891

Burbankite arrd calkinsiter two newcarbotrate minerals from Mon-tana. (Pecora , Ker r ) . . . . . . . . 1169

Burst, J. F. with BradleY, W. F.and Graf, D. L., CrYstal chem-istry and differential thermaleffects of dolomite. 207

Bytownites and anorthites, x-raystudies of. (Gay). ' 734

Calkinsite and burbankite, twonew carbolate minerals fromMontana. @ecora, Kerr).. -. , 1169

Cameron, E. N., with Rowe, R. B.and Weis, P. L., Fluid inclu-sions in berYl and quartz frompegmatites of Middletown'conn, . . 2 lg

Camptonite dikes, amYgdular, fromMount Jo, Mount MarcYquadfalrgler Essex CountY'N . Y . ( J a f r e ) . . . . . . . ' . . . . . . 1 0 6 s

Canney, F. C.. . 331

Canuzzaite, Studies of mineralsulpho-salts: XVII. (Graham'Thompson, BerrY). 536

TNDEX

207334398J J I

s47

536

501

J J /

330

INDEX 1287

Ca-nnon, R S., Jr,, and Grimaldi,F. S. Liudgrenite and cupro-tungstite from the SevenDevils district, Idaho

Carbon 14 measurements on geo-logical samples. (Kulp, Tryonand Snel l ) . . .

Carbonate-apatite, x-ray evidenccof the nature of. (Altschuler,

Cisney, and Bar low). . . .Carr, K.Cavender, W. S. . . . .Chamosite, ferrous and ferric.

(Brindley and Youell) . .C h a p m a n , C . A . . .Chayes, F. In defense of the second

decimal.

Chemical analyses of sedimentaryand metamorphic rocks, com-parison of. (Albee). . . .

Chemical differentiation of multi-generation pegmatite minerals.(Heinrich)

Chemical mineralogy, some prob-lems of. (Fleischer). . .

Chemical variations in pre-Tertiaryrocks of Cornucopia, Oregon,(Goodspeed)

Cheralite, new mineral of themonazite group. (Bowie,(Horne) . . .

Chinoite, a new mineral. @eck,Givens).

Chlor-spodiosite (CarCiPOa), unitcell and space group of. (Mac-

kav). . .Christ, C. L. Studies of borate min-

erals. I: X-ray crystallographyof colemani te.

Studies of borate minerals(II): X-ray crystallography ofinyoite ancl meyerhofferite; x-ray and morphological crystal-lography of 2CaO .3BzOa'9H 'O '

Christensenite and tridymite. (Ma-

s o n ) . . . .Chudoba, K. F. and Giibelin, E. J.

Schmuk- und Edelsteinkund-

liches Taschenbuch. (Book re-view). . 876

Churchite, re-examination of.(Claringbull and Hey). . 397

Cisney, E. A.. . . 328_ ard Sherwood, A. M. with

Weeks, A. D. Monkoseite, anew vanadium oxide from theColorado Plateaus. .. 1235

Claffy, E, W. Composition, tene-brescence and luminescenceof spodumene minera ls . . . . . . 919

Clar ingbu l l , G. F . . . . . . . . .397 ,734,736Clay mineral, 2:1, lath shaped,

ron-expanded dioctaledral.(Weaver). 279

CIay minerals, 2: l, classification of( W e a v e r ) . . . . . . . . 6 9 8

Clay minerals, geochemical studiesof (II): Relation between ionicsubstitution and swelling inmontmorillonite, (Foster). . .. 99+

Clintonite as a contact-metasonrat-ic product of Boulder bath-

Ylith, Montana. (KnePf; 1113Coleman, L. C. Mineralogy of the

Yellowknife Bay Area, N.W.T. 506Colemanite, r-ray crystallography

o f . ( C h r i s t ) . . , . . . . 4 1 1C o l l i n s , C . B . . . . . . . . . 3 3 2 , 3 3 3Colorado Plateau, mineralogic

s t u d i e s o n . ( W e e k s ) . . . . . 3 6 2Colour of black and grey quartz

from Yellowknife, NorthwestTerritories, Cauada. @oyle). 528

Colusite, germanite and reni6rite,x-ray investigation of. (Mur-doch) . . . . .354 ,794

Complex inclusions in pegmatiteminerals.(Smith) . . 559

Compositional control of the di-mensional properties ofcrystals. (Devore). 334

Cone axis and upper level preces-sion photographs, a note on.( Q u r a s h i , B a r n e s ) . . . . . 5 5 2

Conichalcite, space gror.lp of. (Qu-rashi, Barnes, Berry). 557

Coombs, D. S.. . . 398, 735Corey, A. S. Note on sphalerite

903

J I '

328/ J J

352

398332

784737

J Z I

343

149

341

734

191

/ .J.)

411

912

866

1288

and wurtzite. . .Cosalite and other lead sulpho-salts

at Grainsgill, Caldbeck, Cum-berland. ( Kingsbury, Hartley)

Crichtonite, a dist irrct species.(Bannister, Claringbull, Hey) .

Crystal chemistry and differentialthermal effects of dolomite.(Bradley, Burst, Graf).

Crystal classes, notation and ar-rangement of . (West). .

Crystal geometry of alkali silicates.(Donnay, Donnay)..

Crystallographic control of replace-ment of qrartz by feldspar.(Stringham)

Cummingtonite from the MikonuiRiver, Westland, New Zea-lan t . (Mason) .

Cuprotungstite and lindgrenitefrom the Seven Devils dis-trict, Idaho. (Cannon, Grimal-d i ) . . .

Cur t i s , G.Cuttitta, F. with Frondel, J. W.

The status of billietite andbecquerelite

Dah l , H . M. .

waters. (Friedman, Urey) 338Devore, G. W. 334Diamond, directional grinding

hardness in. (Denning). .108, 334D i c k s o n , K . O . . . . . 3 5 0" Difference Patterson" to facilitate

the solution of order-disorderproblems in mineralogy.( F r u e h , J r . ) . . . 3 4 0

Differential leaching of uranium,radium, and lead from pitch-blende in H:SOr solutions.(Phair and Levine) 356

Diopside-watersystem.(Yoder) 365D o a k , J . B . . . 3 2 7 , 3 4 6Dolomite, crystal chemistry and

differential thermal efiects of.(Bradley, Burst, Graf). 207

Donnay, G. Roentgenite, 3CeFCOa'2CaCO:, a new mineral fromGreenland.. 868

- Book Review. 874and Donnay, J, D. H. Crys-

tallography of basttraesite, par-isite, roentgenite, and syn-chisite. 932

Donnay, J. D. H., with Donnay, G.,Clystal geometry of alkali sili-cates.

(Book Review)Doug las , A . M . 8 . .

Drake, C. L. . . . ,Dufrenoysi te, *- ray data.

L4l

INDEX

782

363

7 3 4

207

r6s

834

862

90336+

1 1 0 1 n 1 0

J + /

Dana's Manual of Mineralogy.(Hurlbut) (Book Review) 423

Data on lead sulpharsenides fromBinnental, Switzerland. (Ber-

r y ) . . 330Dav i s , G . L . . . 327 ,333 ,3+6Decrepitation characteristics of

some high grade metamorphicrocks. (Smith) 448

Dellwig, L. F. Hopper crystals ofhalite in the Salina of Michi-s a n . . 7 3 0

334Denning, R. M. Directional grind-

ing hardness in diamond.. 108,334Density determination by a modi-

fied suspension method; x-raymolecular weight, and sound-ness of sodium chloride.(Straumanis) 662

Deuterium content of natural

Earley, J. \M., Milne, I. H. andMcVeagh, W. J. Thermal de-hydration and x-ray studies onmontmorillonite. . . 336,770

Earley, J. W., Osthaus, B. B. andMrlng, I, H. Purification andproperties of montmorillonite

. . 3 3 5 , 7 0 7Earthcuake surface wave investi-

guliolr". (Ewing and Press). . 337Efremov, N. 336Eitel, W. Thermochemical Meth-

ods in Silicate Investigations.(BookRev iew) . . . 738

Ellsworth, Hardy Vincent, me-morial of. (Haycock) 427

163421397335330

INDEX 1289

Enchanted Rock pluton, LlanoCounty, Texas, texture of.(Hutchinson). . . 346

Endellite, halloysite, and kaolinite,differential thermal analysisof. (Sand,Bates) 27I

Eocene magma series of BealpawMts., Montana. (Pecora). . . 356

Erd, R. C,, Foster, M. D. and Proc-tor, P. D. Faustite, a new min-eral, the zinc analogue of tur-q u o i s . . . . . . . . . . . . 9 6 4

Erzmikroskopisches Praktikum.(Schqeiderhdhn) (Book Re-view). .

Evans, H. T., Jr., with Jaffe, H. W.and Meyrowitz, R. Salama-lite, a new rare earth caf-bonate mineral. . 741

and Block, S. The crystalstructure of montroseite, avanadium member of the di-

(Berman). 330Ferriferous orthoclases of Mada-

g a s c a r . ( C o o m b s ) . . . . 3 9 8F i r m a n , R . J . . . . . . 8 7 3Fisher, D. J. Precession orientation

photos. . . 399Fleischer, M. Some problems of

chemicalmineralogy. . . . 149- and Switzer, G. The baven-

ite problem. 988Fluid inclusions in beryl and quartz

from pegmatites of Middle-town, Conn. (Cameron, Rowe,Weis). . 218

Fluid inclusions in minerals frornzoned pegmatites of the BlackIfils, South Dakota. (Weis) 363,671

Forsterite, optically negative, inthe system NarO-MgO-AhOrSiOz (Insley). . 346

Fortunes in Minerals IncludingUranium. (Idriess) (Book Re-view). . 145

Foshag, W. tr'. with Switzer, G.,Murata, K. J. and Fahey, J. J.Re-examination of mosesit-e. 1225

Book rev iews. . , .422,739tr'oster, M. D. Geochemical studies

of clay minerals (II): Relationbetween ionic substitution andswelling in montmorillonite 37 3, 994

__ and Proctor, P. D. withErd, R. C. F'austite, a new min-eral, the zinc analogue of tur-q u o i s . . : i . : . : 9 6 4

Fouriersynthese von Krista undihre Anwendung in derChemie. (Nowacki) (Book Re-v i e w ) . . . . . . . . . . 4 2 1

Francis, E. E. with Roy. R. Onthe distinction of sillimanitef rommul l i t -e . . 725

Frederickson, A. tr'. Effectively in-creasing the resolving Powerof a microscope to reveal un-suspected detail in thin sec-

F r i e d m a n , C . M " . . . . . . . .F r i e d m a n , I . . . . .

A 1 a

aspore grou.pE w i n g , M . . .

. 1242. 3 3 7 , 3 5 5

Faley, J. J. with Allen, V. T. Rho-donite, johannsenite and fer-roan johannsenite at Vanadi-um, New Mexico .. 883

and tr'oshag, W. T. \i'ithSwitzer, G. and Murata, K. J.Re-examination of mosesite 1225

Waldemar T. Schaller. 881trb.heyite, new phosphate mineral

from Minas Gerais, Brazil.@indberg Murata). . . 263,349

Fairbairn, H. W. . 354F a r q u h a r , R . M . . . . . . . . 3 3 2 , 3 3 3Faust, G. T. Clarence S. Ross.. 879

Ifuntite, Mg3Ca(COB)4, an e w m i n e r a l . . . . . . 4

-, Memorial of Charles Rob-insonTootha}er . . . . 313

- and Murata, K. J. Stevensiteredefined as a member of themontmorillonite group .

Faustite, a uew mineral, the zincanalogue of turquois. (Erd,Foster, Proctor). . . . . . .

Fergusonite, re-examination of,

81sJ J /

338338

973

964

1007

76r

/ J J

419339

Frondel, J, IM. and Cuttitta, F.Studies of uranium minerals(XI): Status of billietite a:rdbecquerel i te.. . .339,1019

Frueh, A. J., J.. . . 340

1290

Frondel, C. Hytlroxyl substitutionin thorite and zircon.

New manganese orides:hydro-hausmannite and wood-ruffte. .

and Bauer, L. H. Mangan-pyrosmalite and its polymorph-ic relation to friedelite andschallerite.

with Palache, C., andBerman, M., System of Min-eralogy of James DwightDana and Edward SalisburyD a n a . ( B o o k R e v i e w ) . . . . .

Gamma-ray well logging, theoreticalconsiderations in. (Goodman) .

Gardiner, L.. .Garrels, R. M. Some thermody-

namic relations a:nong thevanadium oxides and their re-lation to the oxidation states ofthe uranium ores of the Colo-r a d o P l a t e a u s . . . . .

Gay, P..Genetische Lagerstiittengliederung

auf Geotektonischer Grund-lage. (Schneiderhdhn) (BookReview)

Genthelvite crystal from El PasoCounty, Colo. (Glass, Adams) .

Geochemistry of potassium, rubidi-um, cesium; and thallium insediments. (Canney) . .

Gheith, M. A. Lipscombite, a newsynthetic "iron lazulitett. . .

Giant crystals, occurrence and ori-gin of. (Jahns)

Giardini, A. A. with Mitchell,R. S. Oriented olivine inclu-sions in diamond.

Gi le t t i , B . J . . . . .G i l le rman, E . . . . .Givens, D. B., with Beck, C. W.,

Chinoite, a new mineral. . . .Glass, J. J. and Adams, J. W. Gen-

thelvite crystal from El PasoCo., Colo..

-, with Hewett, D. F. Twouranium-bearirg pegmatitebodies in San BernardinoCounty, California .. 1040

Goldsmith, J. R. .340,342Goodman, C.. 341Goodspeed, G. E.. 341Gorden, Samuel George, memorial

o f . ( P a r r i s h ) . . . . . . . . . 3 0 1Goyazite, a new strontium mineral

(Mrose). 354Graf, D. L., with Bradley, W. F.,

and Burst, J. F., Crystal chem-istry and differential thermalefrects of dolomite.. . 207

342Graham, A. R., Thompson, R. M.

and Berry, L. G. Studies ofmineral sulpho-salts: XVII-Cannizzarite. 536

Granitic gneiss domes of westernNew Hampshire, origin of,(Chapman). 332

Granitization, special criteria for.( M i s c h ) . . . . . . . . . . . 3 s 1

Granophyre from Coire Uaigneich,Isle of Skye, containing quartzparamorphs after tridymite.(Wager, Weedon, Vincent) .. 736

Graphite, synthesis of, at roomtemperatures. (Slawson) 50

Green, J. 347Grimaldi, F. S. with Cannon, R. S.,

Jr. Lindgrenite and cupro-tungstite from the SevenDev i ls t l i s t r i c t , Idaho. . . . . . . 903

INDEX

612

563

r36329340

191

858

s47351

125rt J +

739

858

331Geology of the Caballo Mountains,

(Kelly, Silver) (Book Review) 878Geophysical investigations in sub-

merged Atlantic Coastal Plain;VII, Continental shelf, slopeand rise south of Nova Scotia.( O f f i c e r , E w i n g ) . . . . . . . . 3 5 5

Germanite, colusite and reni6rite,x-ray investigation of. (Mur-doch).. .354,794

INDEX I29t

Grimshaw, R. W.. 735Gruner , J . W. . . . . . . 342 ,357Gtibelin, E. J. and Chudoba, K. F.

Schmuk- und Edelsteinkund-liches Taschenbuch. (BookReview) 876

Giieblin, E. J. Inclusions as aMeans of Gemstone ldentifica-tion. (Book Review). 740

Guffey region, Colorado, notes onsome mineral occurrences in.(Bever) 138

Gummi te . (Fronde l ) . . . . . 339Gypsum deposits near Sun City,

Barber Co., Kansas, geologyo f . ( M c G r e g o r ) . . . : . . . . . . 3 5 0

Gyrolite. (Mackay, Taylor). . . 397

Ilalloysite, endellite, and kaolinite,differential thermal analysisof (Sanal and Bates). . . . 271

Harmotome in N. W. Ross-shire.occurrence of. (Waterston). . .

H a r t l e y , J . . . . .Ifawley, J. E., and Rimsaite, Y.

Platinum metals in some Ca-nadian uranium and sulphideores . . .

Hay , R. L . .Hayash i , A . . .Haycock, M, Memorial of Hardy

VincentE l lswor th . . . .Heat production in basalts and

t h e i r o r i g i n . ( H u r l e y ) . . . . . . . . 3 4 5Heinrich, E. W. and Levinson,

A. A. Studies in the micagroup; Mineralogy of the rosemuscovites. 25

- Zoti\g in pegmatite dis-tricts. . 68

-- (Book Reviews) . . . ..14+, r45,146,425,877

urarium-bearing pegmatitebodies in San BernardinoCounty,California. ... 1040

H e y , M . H . . . . . . . . . 3 9 7 , 7 3 4Heystek, H.. 873Ilidalgoite, a rew mineral. (Smith,

Simons,Vlisidis). .- . l2l8H i e t a n e n , A . . . . . 3 4 4Higazy, R. A., Trace elements in

perthite pegmatites of theBlack Hills, S. Dakota 172

High-order plates for the micro-scopic examination of mineralg ra ins . (Smi thson) . . . 737

High-temperature optics in somenaturally occurring plagio-c lases . (Brad ley) . . . . . 872

Hildebrand, F. A. Minimizing theefrects of preferred orienta-tion in x-ray diffraction pat-t e r n s . . - . . . . 1 0 5 1

and Sherwood, A. M. withMilton, C. The identity oftinzenite with mangatroana x i n i t e . . . . . . . l l 4 8

Hillebrandite, preliminary x-ray in-ves t iga t ionsof . (He l le r ) . . . . . . 734

Hilmy, M. E. Structural crystal-lographic relatior between so-dium sulfate ard potassiumsulfate a-nd some other syn'the t icsu l fa teminera ls . . . . . . . 118

Holmes, A., Transactions of theEdinburgh Geological Society,Vol. XV, Campbell Volume.( B o o k R e v i e w ) . . . . . . 4 2 5

Ifolser, W. T. Beryllium mineralsin the Victorio Mountains,Luna County, New Mexico. . . 599

Ilooker, M. Bibliography of Clar-e n c e s a m u e l R o s s . . . . . . . . . . 1 2 7 2

Bibliography of 'Waldemar

Theodore Schaller. .. 1276Hopper crystals of halite in the

Salina of Michigan. (Dellwig)Ifornblende in northwest Ad"iron-

dack granitic rocks, chemicalpetrology and mineralogy of.(Budtlington, Leonard). . . . - .

Horne, J. E. T. .

398872

463343426

427

, 878J IJ

Heller, L. 734H e n d e r s o n , D . M . . . . . . . 3 4 4Ifenderson, E. P. and Perry, S. H.

The Mayodan meteorite,Rockingham County, N. Caro-I i n a . . . . . . . . . 1 0 2 5

Hewett, D. F. and Glass, J. J. Two

730

891734

1292

Hunt, Walter tr'. (Kraus)Huntite, Mg3Ca(CO:)o u o.* -io-

eral. (Faust) ...Hurlbut, C. S., Jr., Dana's Manual' of Mineralogy. (Book Revie'rv)Hur ley , P . M. .Hutch inson, R. M. . .Ifyalophane, x-ray method for

determining composition of.(Vermaas). . .

Hydrated Ca silicates, riversideite,tobermorite, plombierite (Mc-Connell) . . .

Hydrohausmannite and woodruf-fite (Frondel) .

Hydrous mica from Yorkshire fire-clay. (Carr, Grimshaw, Rob-e r t s ) . . . .

Hydroxyl substitution in thoriteand zircon (tr'rondel).

1

+

423345346

845

/ J J

76r

735

1007

Idriess, I. L. Fortunes in MineralsIncluding Uranium. (BookReview) .. 145

Ilmenite, proposed pelrographicmethod for the rapid deter'mination of. (Wallace). .. 729

Ilvaite and prehnite in micropeg-matitic diorite, SoutheastPapua. (Baher) . . . . 840

Inclusions as a Means of GemstoneIdentifi cation. (Gueblin) (BookReview) 740

fngerson, E. Giant amygdules inandesite from the southernQuitman Mountains, Texas 1057

(Book Reviews) . . 419 , 87 +Inghram, M: G.. . . 361Insley, R. H. 346International Tables for X-ray

Crystallography. Vol. I. Sym-metry Groups. (Henry, Lons-dale editors) (Book Review) 147

Intrusion breccias of Majuba Hill,NevAda. (Thurston, Trites). . 360

Inyoite and meyerhofferite, x-raycrystallography of (Christ) 912

Ionic substitution and swelling inmontmorillonites, relation be-t w e e n . ( t r ' o s t e r ) . . . . . . . , . . . 3 3 7 , 9 9 4

Isotopic constitution of ore leadsand their relation to geologicaltirne. (Collins, Russell, andF a r q u h a r ) . . . . . 3 3 3

Isotopic constitution of radiogenicleads and measurement of geo-logical time. (Collins, Farqu-har, and Russell) . 332

Jaffe, II. W., Meyrowitz, R., andEva:rs, I[. T., Jr., Sahamalite'a trew rare earth carbonatemineral. . . 741

Amygdular camptonitedikes from Mount Jo, MountMarcy. quadra:rgle, EssexC o u n t y , N . Y . . . . . . . 1 0 6 5

Jahns, R. H. The genesis of peg-matites. I. Occurrence andorigin of giant crystals 563

Genesis of pegmatites (II):

Quantitative analysis of lithi-urn-bearing pegmatite, MoraCounty ,NewMex ico . . . . 1078

Jalpaite (Ag3CuS), natural andsynthetic. (Claringbull) . 735

Johannsenite, ferroan johannsen-ite and rhodonite at Vanadium'New Mexico. (Allen, Fahey). . 883

J o h n s , W . D . . . . . 8 7 3

Judith Mountains, Montana, pe-t ro logy o f . (Wal lace) . . . . . . . 362

Kao radioactive decay, branchingratio of, and application togeological age determinations.(Mousuf). . . 352

Kaolinite, endellite, and halloysite'differential thermal analysisof. (Sand, Bates). . . 271

Kaolinites, high-temperature phasechanges in. (Johns). 873

Kaliophilite, imperfections incrystal structure oi. (Douglas) 397

Kaye, C. A. Xonoli te occurrence inPuerto Rico. . 860

Keating, L. F., and Berry' L. G.Pisanite from Flin Flon,M a n i t o b a . . . . 5 0 1

K e i t h , M . L . . . 3 4 6

INDEX

INDEX 1293

1204Kelly, V. C. and Silver, C. Geology

of the Caballo Mountains.( B o o k R e v i e w ) . . . . 8 7 8

Kerr, J. H. with Pecora, W. T.Burbankite and calkinsite,two new carbonate mineralsf r o m M o n t a n a . . . 1 1 6 9

Kerr, P. F.. 3+7T('opf, A. Clintonite as a contact-

metasomatic product of Boul-der bathylith, Montana. 1113

Kingsbury, A. W. G. 872Kracek, F. C. (Book Review) 738Kramer. H. with Allen. R. D. Oc-

currence of bassanite in twodesert basins in southeasternC a l i f o r n i a . . . . 1 2 6 6

Kraus, E. II., Presentation ofRoebling Medal to tr'rederickEugene Wright. 290

Walter F. Ifunt. . 1(Book Reviews) . . . 740,876 7

Ku lp , J . L . . . 329,347

Larsen, E. S., Jr., Waring, C. L.and Berman, J. Zoned zkconfromOklahoma .. 1118

Lath shaped non-expanded diocta-hedral 2il clay mineral.(Weaver) 279

Laue photograph, application of tothe stutly of polytypism andsyntaxic coalescence in sili-con carbide. (Mitchell) 60

Laves, F.. 340Lead, native, Presidio Co., Texas.

(Lonsdale,Dickson). . . 350Lead sulpharsenides from Binnen-

tal, new data on (Berry). . . . . 330Lead, trace amounts in zircon and

other minerals, spectrographicdetermination of. (Waring,Worthing) 827

Lead-uranium ages of uraninitesfrom Triassic and Jurassicsedimentary rocks of Coloradoplateau. (Stieff, Stern) 359

Leads, ore, isotopic constitution of.(Collins, Farquhar, Russell). . 332

l e i g h t o n , M . W . . . . . 3 4 8

Leona rhyolite, Alameda County'Cali fornia. (Robinson) . . . . . .

Leonard, B. F., with Buddington'A. F. Chemical petrology andmineralogy of hornblende innorthwest Adirondack rocks . .

Lev ine , H. . .Levinson, A. A. Studies in the mica

group; Relationship betweenpolymorphism and composi-tion in the muscovite-lepitloliteser ies . . . . . .88 ,349

with Heinrich, E. W. Stud-ies in the mica group; Min-eralogy of the rose muscovites 25

Light absorption and compositionin a solid solution series, rela-t ionship between. (Bloss) . . . 330

Lindberg, M. L. withMurata, K. J.,Faheyite, new phosphate mitr-eral from Minas Gerais, Bra-2 i 1 . . . . . . . . . 2 6 3 , 3 4 9

Pecora, 'W.

T. and Bar-bosa, A. L. tle M. Moraesite,a new hydrous beryllium phos-phate from Minas Gerais, Bra-2 i 1 . . . . . . . . . . . . . . 1 1 2 6

Lindgrenite and cuprotungstitefrom the Seven Devils d.istrict,Iilaho. (Cannon, Grimaldi). . . 903

Lipscombite, a new synthetic '(iron

lazt:.lite." (Gheith). 612Listwiinites of the Caucasus and

Urals, origin of. (trfremov). . . 336Lithium-bearing pegmatite, Mora

County, New Mexico, quan-titative analysis of. (Jahns) 1078

Lonsdale, J. T.. . . 350

M a c k a y , A . L . . . . . . . . . 3 9 7 , 7 3 5M a c k e n z i e , R . C . . . . . 7 3 7Magmatic and granitized rocks in

Lemhi County, Idaho. (Ander-son) - . . 328

Magnesian calcites, stability of.( G r a f , G o l d s m i t h ) . . . . . . . . 3 4 2

Manganese oxides, new: Ilyclro-hausmannite and woodruffiite.(Frondel) 761

891348356

INDEX

Manga.npyrosmalite and its poly-morphic relation to friedeliteand schallerite. (Frondel,B a u e r ) . . . . . . . . - . 7 5 5

Marine magnetic investigations:area from New Jersey to CapeC o d , M a s s . ( M i l l e r ) . . . . . . . . 3 5 1

Mason, B. Cummingtonite fromthe Mikonui River, WestlandN e w Z e a l a n d . . . . 8 6 2

- Tridymite and christen-senite.. 866

Mathews, W. H. a-nd Watson,K. D. Spherulitic alkali rhyo-lite dikes in the Atsutla Range,Northern British Columbia.. +32

M a x w e l l , C . H . . . . . . . . . . . 3 2 9Mayodan meteorite, Rockingham

County, N. Carolina. (I{en-derson, Perry). . 1025

McConnell , J. D. C. 735McGregor, D. J.. . 350Mclaughlin, R. J.. 736McVeagh, W'. J. with Earley, J. W.

and Milne, I. II. Thermal, de-hydration and x-ray studieson mortmori l lonite. . . . . . 770

Measurement of Geologic Time,Report of Committee on.( B o o k R e v i e w ) . . . . . 8 7 8

Measurement of Radioisotopes.(Taylor) (Book Review). . - . 877

Melilite, re.examination of thecrystal structure of. (Smith). . 643

Mergner, J. L. with Reed, F. S.Preparation of rock thin sec-t i o n s . . . . . . . . 1 1 8 4

Metamict minerals (II): re-exam-ination of fergusonite (Ber-man). . 330

Metasomatism by apophysal dikesin Crawford Notch region,N. H. (Henderson). . . 34+

Meta-uranocircite, Studies of ra-radioactive compounds; VI.(Nufteld, Milne). 476

Meyerhofferite and inyoite, x-raycrystallogaphy of. (Christ) 912

Meyrowitz, R. anrl Evans, II. T.,Jr. with Jaffe, II.'W. Sahama-

lite, a new rare earth car-bonate mineral 741

Miasnikov, V. S.. 426Mica group, studies in; Mineral-

ogy of the rose muscovites.(Heinrich, Levinson). .. . : .. 25

Mica group, studies in; Relation-ship between polymorphismand composition in the mus-covite-lepidolite series. (Lev-inson). 88

Micas, effect of grinding on: I.Muscovite. (Mackenzie, Mil-ne) . . . 737

Micaceous minerals in shales, clays,and similar materials, rc-raymethod for studying orienta-t i o n o f , ( B r i n d l e y ) . . . . . . . 3 9 8

Microcline-sanidine stability rela-tions. (Goldsmith, Laves). . 340

Micrometric analysis, relation be-tween area and volurne.(Chayes). 737

Microscope high-temperature heat-ing stage. (Richter, Abell) 1269

M i l l e r , E . T . . . . . 3 5 1Mil ler, L. J.. . . 351Miller, R., III, The Webster-Ad-

die ultranafic ring, JacksonCounty, N. Carolina, and sec-ondary alteration of its chrom-i t e . . . . . . . . . 1 1 3 4

Milne, A. A. 737Milne, f. H. with Earley, J. W. and

Osthaus, B. B. Purificationand properties of montmoril-l o n i t e . . . . . . 3 3 5 , 7 0 7

and McVeagh, W. J. withEarley, J. W, Thermaf, dehy-dration and x-ray studies onmontmori l lonite.. . . . . . . . . .336,770

- with Nuffeld, E. w. studiesof radioactive compounds: W-Meta-uranocircite . . 476

Milton, C,, Hildebrand, F. A. andSherwood, A. M. The itlentityof tinzenite with manganoana x i n i t e . . . . . , 1 1 4 8

Mineral age measurement: chemi-cal separations of Rb and Sr

INDEX 1295

by means of ion-exchange col-umns. (Davis, Aldrich) 333

Mineral age measurement: massspectrometric determinationsof Rb87 and Sr87 in lepidolites.(Aldrich, Doak and Davis) 327

Mineralized cavity in tholeiite dikein Northumberland. (Randall) 872

Mineralogic studies of the Colo-rado Plateau. (Weeks) 362

Mineralogical Society of AmericaAward, accept€rnce of (Ste-wart) . 298

Mineralogical Society of AmericaAward, presentation to Fred-erick Henry Stewart. (Schal-

l e r ) . . . 297Mineralogical Society of America,

proceedings of the thirty-thirdannual meeting at Boston,Mass. 317

List of correspondents, fel-lows and members. . . 369

List of former officers andmeeting places 366

Mineralogical Society (London)

397.734.872Mineralogy of Greenland. (Blg-

gild) (Book Review) 877Misch, P. 351Mitchell, R. S. Application of the

Laue photograph to the studyof polytypism and syntaxic co-alescence in silicon carbide . 60

and Giardini, A. A. Ori-ented olivine inclusions in di-amond 136

with Ramsdell. L. S. A newhexagonal polymorph of sili-concarb ide , lgH. . . . 56

Moleva, V. A. . 426Monochromator,simple. (Vincent) 872Montmorillonite, purification and

properties of. (Early, Ost-

ionic substitution arnd swellingin . (Fos ter ) . . . .337 ,994

Monhnorillonite, thermal tlehyclra-tion and x-ray studies on.

@arley, Milne, McVeagh). .336,770Montroseite, a new vanadium ox-

ide from the Colorado Pla-teaus. (W'eeks, Cisney, Sher-w o o d ) . . . . 1 2 3 5

Montroseite, a vanadium memberof the diaspore group, crystalstructure of. (Evans, Block) 1242

Moody, K. M. 398Moore, F. B.. 352Moraesite, a new hydrous berylli-

um phosphate from MinasGerais, Brazil. (Lintlberg, Pe-cora ,Barbosa) . .1126

Mosesite, re-examination of.(Switzer, Murata, Fahey, Fos-h"g) .. . 1225

Mousuf, A. K. . 352Mrose, M. E, Studies of uranium

minerals (XIII): Syntheticuranospinites. 1159

353, 354Murata, K. J. with Lindberg, M. L.

Faheyite, new phosphate min-eral from Minas Gerais, Bra-z i l . . . .263 ,349

Fahey, J. J. and Fos-h"g, W. I'. with Switzer, G.Re-examination of mosesite 1225

- \ 'ith llaust, G. T. Stevensiteredefined as a member of themotrtmorillonitegroup. .. 973

Murdoch, J. X-ray investigation ofcolusite, germanite and reni-6 r i te . . . .354 ,794

Muscovites, rose, studies in themica groupl mineralogy of.(Heinrich, Levinson). 25

Muscovite-lepidolite series, rela-tionship between polymorph-ism and compositior in. (Lev-inson). .88, 349

Nacrite occurrence at Shap, West-

Native lead, Presidio County,Texas. (Lonsdale and Dick-son). . . 350

Nowacki, W., Fouriersynthese von

haus, Milne 335,707 morland. (Firman). . 873Montmorillonite, relation between Nagy, B. 355

7296 INDEX

355

338

Kristallen und ihre Aniven-dung in der Chemie. (BookReview). . . 421

Nuffield, E. W. and Milne, I. H.Studies of radioactive com-pounds: Vl-Meta-uranocir-c i t e . . . . + 7 6

Beniaminite. . . 550

from Minas Gerais, Brazil t t 26356

Officer, C. B.Ol iv ine amphibol i te of Pa.ry

Sound, Ontario, petrology of.(Fr iedman).

Olivine inclusions in diamond,oriented. (Mitchell, Giardini) .

Osthaus, B. B. and Milne, I. H.with Earley, J. W. Purifcationand properties of montmoril-I o n i t e . . . . . . . . . . . 3 3 5 , 7 0 7

Oxygen isotopes in quartz of con-trasted origin, ratio of. (Keith,Tuve, Davis, Doak). .

Palache, C. with Berman, H. andFrondel, C. System of Mineral-ogy of James Dwight Danaand Edward Salisbury Dana.(Book Review). .

Palermoite and goyazite, tlvo newSr minerals from North Gro-ton, N. H. (Mrose). .

Parisite, crystallography of. (Don-nay, Donnay). . . .

Parrish, W. Memorial of SamuelGeorge Gorden. . . .

Paths along which matter hasmoved in and around quartzand feldspars in metamorphicrocks. (Freder ickson). . . .

P a t t e r s o n , C . . . . .Pearce, D. W. with Barthauer,

G. L. and Rulfs, C. L. Investi-gation of thucolite. .. . 802

Pecora, 'W.

T, and Kerr, J. If.Burbankite and calkinsite, twonew carbonate minerals fromM o n t a n a . . . . . 1 1 6 9

-,'and Barbosa, A. L. de M.with Lindberg, M.. L. Merae-site, a new hydrous phosphate

Pegrnatites, genesis of. I. Occur-rence and origin of giant crys-tals. (Jahns). 563

Pegmatites, genesis of (II): Quan-titative analysis of lithiurn-bearing pegmatite, MoraCounty, N. Mexico. (Jahns).. 1078

Perry, S. H. with Henderson, E. P.The Mayodan meteorite,Rockingham County, N. Caro-l i n a . . . . . . . . . . 1 0 2 5

Petrogenesis of a gabbro-grano-phyre complex in northernWisconsin. (Leighton) 348

Petrology of Judith Mts., Montana.(Wallace) 362

P h a i r , G . . . . . 3 5 6Pinson, W. H. 356Pisanite from tr'lin Flon, Manitoba.

(Keating, Berry,). . . . 501Pitchblende deposit, Boulder

County, Colorado. (Moore andCavender). 352

Pitchblende deposits on QuartzHill, Gilpin County, Colorado.(Armstrong). . . . 329

Pitchblende deposits, relation of to

hypogene zoning in the Front

Range mineral belt, Colorado.(Leonard). 348

Pitchblende in Triassic and Jurassicsediments cf Colorado Plateau,

occurrence and character of.(Rosenzweig, Gruner, and

Gardiner) 357

Platinum metals in some Canadian

uranium and sulphide ores.(Ifawley, Rimsaite). +63

Pleoqaste from Caballo Mts., New

Mexico.(Beck, Maxwel l ) . . . 329

Polymorphism and composition in

muscovite-lepidolite series, re-

lationshipbetween. (Levinson) 349

Porphyry intrusions in BeartoothRange, Montana. (Stobbe). . . 360

Positive and negative extinction

angles in plagioclase feldspars.(Tunell) 404

136

3+6

419

354

932

301

J J I

.to r

INDEX 1297

Precession orientation photos.(Fisher). . . 399

Preferred orientation in x-raypowder diffraction pattenls,minimizing the effects of.(Hildebrand) .. 1051

Prehnite and ilvaite in micropeg-matitic diorite, SoutheastPapua. (Baker ) . . . . . . 840

Prehnitization of albitite. (Watson) 197P r e s s , F . . . . . 3 3 7 , 3 5 7Problems of chemical mineralogy.

(F le ischer ) . . . . . 1+9Proctor, P. D. with Erd, R. C. and

tr'oster, M. D. tr'austite, a newmineral, the zinc analogue ofturquois. 96+

Pseudosymmetry and atomic pat-ternsof crystals. (Wrinch). . . . 365

Pucherite, BiVOr, the structure of(Qurash i , Barnes) . . . . . . . . 489

Pumpellyi te mineral series.( C o o m b s ) . . . . 7 3 5

Purification and properties of mont-morillonite. (Earley, Osthaus,a n d M i l n e ) . . . 3 3 5

Quantitative mineralogical analysisof clay and silt fractions bydifferential thermal analysis.(Mclaughlin). 736

Qurashi, M. M. and Barnes, W. H.A note on cone axis and upperlevel precession photographs. . 552

-- and Barnes, W. I{., Thestructure of pucherite, BiVOr. 489

Barnes, W. H., and Berry,L. G. The space group ofconichalcite. 557

Quartz paramorphs after tridymite 7 36

Qrartz, replacement by feldspar,crystallographic control of.(Stringham) 834

Radiation damage in zircon: a pos-sible age method. (Hurley,F a i r b a i r n ) . . . . . 3 4 5

Radioactive compounds, studies:Vl-Meta-uranocircite. (Nuf-felcl, Milne). +76

Radon leakage from radioactiveminerals. (Bate, Giletti, KulP) 329

Ramsdell, L. S. and Mitchell' R. S.A new hexagonal PolYmorPho f s i l i c o n c a r b i d e , 1 9 H . . . . . . 5 6

- (Book Reviews) . . . 147, 148Randall , B. A. O.. . 872Rankinite, space-group and cell

dimensions. (Moody). . 398Rathite-I l , r-ray data... 330Reed, F. S. and Mergner, J. L.

Preparation of rock thin sec-t i o n s . . . . . . 1 1 8 4

Reni6rite, colusite and germanite,x-ray investigation of. (Mur-

d o c h ) . . . . . . . . . 3 5 4 , 7 9 4Residual kaolins of southern AP-

palachians. (Sand, Bates) ' . . 358Resolving power of a microscoPe,

effective increase in, to revealunsuspected detail in thin sec-tions. (Frederickson). 815

Rhodonite, johannsenite and fer-roan joha:rnsenite at Vana-dium, New Mexico. (Allen'Fahey).

Richter, D. H. and Abell , J. F. Asimple high-temPerature mi-croscope heating stage. . ' 1269

Rigby, G. R. The Thin-SectionMineralogy of Ceramic Mate-r ia ls . (BookRev iew) . . . 146

Rimsaite, Y. with HawleY' J. E.Platinum metals in someCanadian uranium and sul-phide ores. 463

Riversideite, tobermorite andplombierite, hydrated calciums i l i c a t e s . ( M c C o n n e l l ) . ' . . . 7 3 5

Roan and Carolina gneisses in theSpruce Pine District, N. Caro-lina, character and origin of.(Brobst). . 331

Roberts, A. L.. 735

Robinson, G. D. The Leona rhYo-lite, Alameda CountY, CaIi-f o r n i a . . . ' . . 1 2 0 4

Rocks for Chemists' (Shand) (Book

Review) 874

Rock thin sections' preparation of.

1298 INDEX

@ e e d , M e r g n e r ) . . . . . . . . . . . . l I 8 4Roebling Medal, acceptance of.

(WrighD. 292Roebling Medal, presentation to

tr'rederick Eugene W'right.(Kraus). 290

Roentgenite, 3CeFCO: . 2CaCO s, anew mineral from Greenland.(Donnay) 868

Roentgenite, x-ray crystallographyof. (Donnay, Donnay). .. 932

R o s e n z w e i g , A . . . . . . 3 5 7Ross, Clarence S. (Faust).. 879-, Bibliography of. (Hooker). 7272Rowe, R. B, with Cameron, E. N.

and Weis, P. L. Fluid inclu-sions in beryl and quartz frompegmatites of Middletown,C o n n . . . . . . . . 2 1 8

Rowland, E. O.. 872Roy, D. M. . . 358Roy, R. and Francis, E. E. The

distinction of sillimanite frommullite by infra-red techniques 725

358Rulfs, C. L. and Pearce, D. W,

with Barthauer, G. L. Investi-gation of thucolite.. 802

R u s s e l l , R . D . . . . . . . . . 3 3 2 , 3 3 3

Sahamalite, a new rare earth car-bonate mineral. (Jafre, Meyro-witz, Evans).

S a k u r a i , K . . . . . . . . . . .Salina salt of Michigan, textural re-

lationships in. (Dellwig,

Stewart.S c h m i d t , E . R . . . . . .Schmuk- und Edelsteinkundliches

Taschenbuch. (Chudoba, Gii-bel in) (Book Review).

Schneiderhdhn: H.. Erzmikrosko-pisches Praktikum. (Book Re-view). .

Genetische Lagerstiitten-gliederung auf GeotektonischerGrundlage. (Book Review)

Seager, A. F. .Seaman, D. M. Augelite from peg-

matites in New Hampshire.. . .Second decimal, in defense of.

(Chayes)

Seismic refraction measurements inGrand Banks and adjacentshelves. (Press and Beckman) .

Seismic refraction measurements inthe Gulf of Maine. (Drake.

Worzel, and Beckmann). . . .Serpentine group, mineralogy of.

(Nagy, Bates) . .Shand, S. J. Rocks for Chemists.

(Book Review). .Shaw , D . M . .Sherwood, A. M. with Weeks, A. D.

and Cisney, E. A. Montroseite,a new vanadium oxide from theColorado Plateaus

with Milton, C. and Hilde-brand, F. A. The identity oftinzenite with manganoan axi-n i te. .

Short, Maxwell Naylor, memorialof. (Anthony).

Silicon carbide, application of theLaue photograph to the studyof polytypism and syntaxiccoalescence. (Mitchell)

Silicon carbide, l9H, a new herag-onal polymorph. @amsdell,Mitchell). . . .

Briggs). 334Sand, L. B. and Bates, T. F. Endel-

lite, halloysite, and kaolinite,differential thermal analysiso f . . . . . 2 7 1

358Saponite from Krugersdorp Dis-

trict, Transvaal. (Schmidt,Heystek).

Schaller, Waldemar T. (Faley)Bibliography of. (I{ooker).

- I>resentation'of the Miner-alogical Society of AmericaAwa.rd to Frederick llenry

Sillimanite, distinction from mul-lite by infra-red techniques.(Roy, Francis) 725

Silver, C. and Kelly, V. C. Geologyof the Caballo Mountains.( B o o k R e v i e w ) . . . . . . 8 7 8

741+zo

297873

876

A a a

738397

728

784

.t.) /

.'J J

355

87+359

1235

1 148

309

60

56873873

1276

INDEX 1299

Simons, F. S. ard Vlisidis, A. C.with Smith, R. L. Ilidalgoite,a n e w m i n e r a l . . . . . . . 1 2 1 8

Sir Douglas Mawson AnniversaryVolume. (Book Review)... . 145

Slawson, C. B. Synthesis ofgraphitea t roomtempera tures . . . . . . . 50

Smith, F. G. Decrepitation charac-teristics of some high grademetamorph ic rocks . . . . . . . . . 4+8

Complex inclusions in peg-mat i te minera ls . . . . . . 559

Smith, J. V. Re-examination of thecrystal structure of melilite . . 643

Smith, R. L., Simons, F. S, andVlisidis, A. C. I{idalgoite, auew mineral . 1218

S m i t h s o n , F . . . . . . . 7 3 7Snell , W. A... . 347Sodium chloride, x-ray molecular

weight anal soundness of.(S t raumanis ) . . . . . . 662

Sodium sulfate and potassium sul-fate and some other syntheticninerals, structural crystallo-graphic relation between.( I l i l m y ) . . . . . . . . 1 1 8

Sphalerite and wurtzite, note on.(Corey). 141

Spherulitic alkali rhyolitb dikes inthe Atsutla Range, NorthernBritish Columbia. (Mathews,Watson). 432

Spodumene minerals, composition,tenebrescence and lumines-cence of. (Claffy). 919

Stability of magnesian calcites.(Graf and Goldsmith)

Steacy, H. R. An occurrence ofuraninite in a black sand.. . . .

Steamboat Springs, Nevada, three-dimensional picture of. (White)

Stern, T. W.. . . .Stevensite redefned as a member

of the montmorillonite group.(Faus t , Mura ta) . . . . .

Stewart, F. H. Acceptance of theMineralogical Society Award.

Stieff , L. R.. .S t o b b e , H , . . . . .

973

Straumanis, M. E. Density deter-mination by a modified sus-pensiotr method; x-ray mole-cular weight, and soun'dnessof sodium chloride. 662

Stringham, B. Crystallographic con-trol of replacement of quartzby feldspar. 834

Structure Reports for 1949. Yol. 12.(Wilson-Editor) (Book Re-view). . 148

Sulpho-salts, studies of ; XVII-Can-nizzaxite. (Graham, Thomp-son, Ber ry ) . . . . . 536

Sulphur. A Study by the Secre-tariat of the Chemical Prod-ucts Committee. (Book Re-view). . 148

Sutter buttes restudied. (Williams,Curtis) . 364

Switzer, G. Afwillite from Crest-more,Cali fornia.. . . 629

with Fleischer, M. Thebavenite problem. 988

-, Murata, K. J., Fahey, J. J.and Foshag,

'W. F. Re-exami-

nation of mosesite. - . 1225Synchisite, x-ray crystallography

of. (Donnay, Donnay). .. 932System MgO-AlzOrSiOrHzO,

studies in. (Roy, Roy) 358System of Mineralogy of James

Dwight Dana and EdwardSalisbury Dana. (Palache, Ber-man and Frondel) (Book Re-view). . +19

Synthesis of uranium minerals atroom and elevated tempera-t u r e s . ( G r u n e r ) . . . . . 3 4 2

Tabellen zur Optischen Bestim-mung der GesteinbildendenMinerale. (Trdger) (Book Re-view). . 144

Taylor, D. Measurement of Radio-isotopes. (Book Review)... 877

Taylor, H. F. W.. . . . 397Terpstra, P. Thousand and One

Questions on CrystallographicProblems. (BookReview)... . 421

342

549

364359

298359360

1300

Textural relationships in the Salinasalt of Michigan. (Dellwig,B r i g g s ) . . . .

Theoretical considerations ingamma-ray well logging.(Goodman).

Thermal, dehydration, and r-raystudies on montmorillonite.(Ear ley and Mi lne).

'Ihermal transformations in layer

silicate minerals. (Tooker). . . .Thermochemical Methods in Sili-

cate Investigations. (Eitel)( B o o k R e v i e w ) . . . .

Thin rock sections, rapid methodfor production of. (Rowland). .

Thin-section Mineralogy of Ce-ramic Materials. (Rigby)( B o o k R e v i e w ) . . . .

Thompson, R. M. \Mith GrahamA. R. and Berry, L. G. Studiesof mineral sulpho-salts: XVII-Cannizzarite.

Mineral occurrences inWestern Canada

Thorite and. zircon, hydroxyl sub-stitution in. @rondel). . . .

Thorium, mass spectrographic de-termination of. (Tilton, Patter-son, Inghram)

Thousand and One Questions onCrystallographic Problems.(Terpstra) (Book Review). .

Three-dimensional picture ofSteamboat Springs, Nevada.(White) .

Thucolite, investigation of. (Bar-thauer, Rulfs, Pearce). . .

Thurston, R. H. . .T i l ton, G. R. .Tinzenite, identity with manganoan

axinite, (Milton, Hildebrand,S h e r w o o d ) . . . .

Toothaker, Charles Robinson, me-morial of. (Faust)

Tooke r , E . W. . .Trace elements in pegmatites of the

Black Hills, S. Dakota.

ma t i c m ine ra l s . (Shaw) . . . . . , 359Transactions of the Edinburgh

Geological Society, Vol. XV,Campbell Volume. (Holmes)(BookRev iew) . . . . 425

Tridymite and christensenite.(Mason). . 866

Tr i tes, A. F. , Jr . . 360Trdger, W. E. Tabellen zur Op-

tischen Bestimmung derGesteinsbildenden Minerale.( B o o k R e v i e w ) . . . .

INDEX

(Htgazy). 172

Tryon, L. E..Tuff-breccia, intrusive. (Hav). . 343Tunell, G. Definitions of positive

and negative extinction angleson the plagioclase feldspars. 404

T u t t l e , O . F . . . . . . . 3 6 1T u v e , M . A . . . . . 3 4 6

Uraninite in a black sand, occur-rence of. (Steacy). . . 549

Uranium-bearing pegmatite bodiesin San Bernardino County,California. (Hewett, Glass). .. 1040

Uranium deposits in Grant County,New Mex ico . (G i l le rman) . . . . 340

Uranium minerals, studies of (XI):Gumrnite. (Frondel). 339

(XII): Status of billietiteand becquerelite. (Frondel,Cutt i t ta). 339,1019

(XIII): Synthetic ura-no-s p i n i t e s . ( M r o s e ) . . . 1 1 5 9

Uranium minerals, synthesis of, atroom and elevated tempera-tu res(Gruner ) . . . . . 342

Uranium ore controls in Happy

Jack Mine, White Canyon,Utah. (Mil ler). . 351

Uranospinites, synthetic. (Mrose). 1159U r e y , H . C . . . . . . 3 3 8

Vanadium oxides, thermodynamicrelations among, and their re-lation to the oxidation statesof the uranium ores of theColorado Plateaus. (Garrels). 1251

Variation in normative vs. modal

334

34r

336

J O I

738

872

t46

536

1007

361

421

364

802360361

It48

3 1 3361

l4+347

Trace element distribution in mas-

INDEX 1301

</ <

364

634734364423

76r. )+ I

292J O J

860

506

J O J

398

426

426

1007

1 1 1 8

68

874

feldspar of granites, signifi-cance of. (Tuttle). . 361

Vermaas, F. H. S. New occurrenceof barium feldspar at Ot-josondu, S.

'W'. Africa, and an

x-ray method of determiningcomposition of hyalophane. . . 845

Vincent, E. A.. . 736Vincent, H. C. G.. 872Vlisidis, A. C. with Smith, R. L.

and Simons, F. S. Ilidalgoite,a new mineral. . . 1218

of the Black Hills' SouthD a k o t a . . . . .

with Cameron, E. N. andRowe, R. B. Fluitl inclusionsin beryl and quartz from Peg-matites of Middletown' Conn..

West. C. D.Western Canada, mineral occur-

rences. (Thompson). .Whi re , D. t r . .White, W', A. Allophanes from

Lawrence CountY, Indiana. . .W h i t t a k e r , E . J . W . .W i l l i a m s , H . . . .Wolfe, C. W. (Book Review). .Woodrufrte and hYdrohausman-

nite. (Frondel)..Woolard, L. E.. .Worthing, If. with rffaring' C. L.

Spectrographic method for de-termining trace amounts oflead in zircon and other min-erals. . .

Worzel, J. L.. .Wright, F. E, AccePtance of the

R o e b l i n g M e d a l . . . .W r i n c h , D . . . .

Xonotlite occurrence in PuertoRico. (Kaye). .

Yellowknife Bay Area, N. W. T.'mineralogy of. (Coleman). . . .

Yoder, H. S., Jt. .Youell , R. F.Yugawaralite. (Sakurai and HaY-

ashi) . . .

Zinc hoegbomite. (Moleva andM i a s n i k o v ) . . . . .

Zircot, hydroxyl substitution in.(Frontlel). .

Zrcon, zoned, from Oklahoma.(Larsen,

'Waring' Berman). . .Zoning in pegmatite districts.

(Ileinrich)Zur Struktur und Materie der Fest-

kt irper. (Book Review)... . . . .

671

Wager, L. R.

Walker Mineralogical Club.. .

Wallace, R. M. A proposed petro-graphic method for the rapiddetermination of ilmenite. .

Wal lace, S. R. .

Waring, C. L. and Worthing, H.

Spectrographic method for de-

termining trace amounts oflead in zkcon arl other min-

729362

erals.. . 827-- and Berman, J. with Lar-

sen, E. S., Jr. Zoned zirconfrom Oklahoma.. . 1118

Waterston, C. D.. . . 398'Watson,

K. D. with Mathews,W. H. Spherulitic alkali rhyo-lite rlikes in the Atsutla Range,Northern British Columbia. +32

Watson, K. D. Prehnitization of al-bit i te.. I97

Weaver, C. E. A classification oftll.e 2:l clay minerals.. . 698

Lath shaped non-expandedtlioctahedral 2:l clay mineral 279

'Webster-Addie ultramafic ring,

Jackson County, N. Carolina,and secondary alteration of itschromite. (Miller)

Weedon, D. S.Weeks, A. D., Cisney, E. A. and

Sherwood, A. M. Montroseite,a new vanadium oxide fromthe Colorado Plateaus. . r235

362Weis, P, L. Fluid inclusions in min-

erals from zoned pegmatites

/ . J O

561

t 13+736

2t8363J O J

827335