 | | Journal (article/letter/editorial) | | NOTES AND NEWS LUDWIGITE FROM COLORADOGULCH,NEAR HELENA, MONTANA Aoor,pn KNorl, Yale Uniaersity, IVew...Conn. The relatively rare magnesium-iron borate ludwigite was found during the past summer to occur abundantly...10 miles west of Helena, at Colorado Gulch, Lewis and Clark County, Montana. It occurs at two prospect...the forks of Colorado Creek. The prospect openings are in the marbleized dolomites and limestones of...formation a few yards from the contact of the Boulder batholith, which here consists of subporphyritic |  | | Journal (article/letter/editorial) | | Montana Mineral Locality Index Downloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015...2015 K NOWN AS THE TREASURE STATE, Montana is rich in mineral and gemstone localities. The state motto...motto, Ora y Plata meaning “gold and silver,” and the state seal with its representation of mining tools...manganese, phosphate, silver, talc, vermiculite, and zinc is impressive. The official state fossil is...official state gemstones: agate and sapphire. An extensive body of gem and mineral literature has been published |  | | Journal (article/letter/editorial) | | isomorphic vonsenite-ludwigite series A. Bloise and E. Barrese With 6 figures and 3 tables Abstract: Three...intermediate members of the vonsenite (Fe2FeBO5) - ludwigite (Mg2FeBO5) isomorphic series were synthesized...starting material and run products were characterized by X-ray powder diffraction (XRPD) and scanning electron...completed, resulting in the formation of magnesioferrite and suanite. Structural changes observed in synthetic...of various ions replacing Mg and Fe, but also, and mainly, to pressure and temperature variations in the |  | | Journal (article/letter/editorial) | | contact zonesof the Boulder batholith. Ludwigite, intimately mingled with magnetite and a minor amount of...batholith, about 50 miles southwest of the Colorado Gulch locality. 2Schaller,W.T.,LudwigitefromMontana:U...Suraey,Butt.49O,28 32(1911); cf. also Emmons,W. H., and Calkins, F. C., Geologyand ore depositsof the Philipsburg...do for the beginning student of crystallography and physical mineralogy what Dr. winchell's El,ementsoJ...broad groups which vary continuously in composition and properties. Most texts permit the student to infer |  | | Journal (article/letter/editorial) | | articles are in bold face type; notes, ahstracts and reviews are in ordinary type. Only minerals for which...definite data are given are indexed. Aegirite'-cptical and chemical data Ainalite-discredited. (Amark) . ....Alteration products of olivine and leucite in leucite-lamproites from W. Kimberley area, W. Australia.(Prider...(Prider, Cole)..... 373 American Society for X-ray and E l e c t r o nD i f f r a c t i o n . . . . . . . ....Olaf, memorial of. (Sos' man). Dz Andrews, D. A. and Schaller, W. T. Dolomite pseudomorphous aftercrystalsofaragonite |  | | Journal (article/letter/editorial) | | chalcopyrite and a cupriferous pyrrhotite, mostly in small amounts. A bed near Pyriton, Clay County, Ala.,...southern part of Cleburne County at what was called Wood's copper mine and also at Smith's copper mine...material at the surface was hauled to Carrollton, Ga., and shipped from there to Baltimore. A large amount of...Martinez Lake, Yuma Co., Ariz., is a resort on the Colorado River, 37 miles north of Yuma. From the locality...part of the Colorado River and 37 miles north of Yuma, Ariz., we find wide terraces and plains which |  | | Report (issue) | | Geology and Igneous 1 Petrology of the Northern Elkhorn Mountains I I Jefferson and Broadwater Counties...Counties, Montana GEOLOGICAt ' SURVEY PROFESSIONAL Prepared partly, on behalf of the U.S. Atomic Elnergy... • Geology and Igneous Petrology: of the Northern Ell(horn Mountains Jefferson. and Broadwater CountieS...CountieS, Montana By HARRY w. SMEDES GEOLOGICAL URVEY PROFESSIONAL PAPER 510 Prepared partly o...Kootenai Formation ____________ -1- ______________ _ Colorado Formation ____________ Lower unit ________________ |  | | Report (volume) | | INTERIOR BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY 1942 and 1943 GEOLOGICAL SURVEY BULLETIN 949 UNITED STATES...Director Bulletin 949 NORTH AMERICAN GEOLOGY 1942 and 1943 BY EMMA MERTINS THOM UNITED STATES GOVERNMENT...218 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY 1942 and 1943 By EMMA MERTINS THOM INTRODUCTION The bibliography...including paleontology, petrology, and mineralogy, for the years 1942 and 1943, lists publications on'the...Continent of North America and adjacent islands and on Panama, the Hawaiian Islands, and the Island of Guam. |  | | Book (edition) | | Edition • Willard L. Roberts, Thomas J. Campbell, and George R. Rapp, Jr., with photographs edited by Wendell...Wendell E. Wilson Mineralogists, geologists, and gemologists have come to rely on the Encyclopedia of...has been completely revised and updated with a wealth of new information and features. The second edition...mostly of large specimens, as well as 104 black-and-white photographs • 45 new crystal drawings of rare...mineral's formula, its crystal system, locality, and physical property data, as well as source references | | | Book (edition) | | Edition Willard L. Roberts, Thomas J. Campbell, and George R. Rapp, Jr., with photographs edited by Wendell...Wendell E. Wilson Mineralogists, geologists, and gemologists have come to rely on the Encyclopedia of...has been completely revised and updated with a wealth of new information and features. The second edition...mostly of large specimens, as well as 104 black-and-white photographs 45 new crystal drawings of rare...mineral’s formula, its crystal system, locality, and physical property data, as well as source references |  | | Book (edition) | | Associate Professor of Mineralogy Department of Geology and Geophysics, University of Minnesota Minneapolis....photocopying, recording, taping, or information storage and retrieval systems-without permission of the publisher...illustrations for AXINITE, Hyuga, Japan (12, column 1) and AZURITE, Concepcion del Oro, Zacatecas, Mexico (13...illustrations for SELLAITE, Vesuvius, Italy (12, column 2) and SEMSEYITE, Julcani mine, Huancavelica, Peru (#3,...TELLURITE, Moctezuma, Sonora, Mexico (#2, column 1) and TENNANTITE, Dresser quarry, Walton, Nova Scotia, |
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