 | | Journal (article/letter/editorial) | | JULY_AUGUST, 1967 MICAS OF THE BROWN DERBY PEGMATITES, GUNNISON COUNTY, COLORADO1 and,Mineralogy,The E...Michigan. Ansrnecr The Brown Derby No. 1 pegmatite, of Gunnison County, Colorado, contains a highly diversified...muscovite, sericite, and five major varieties of lepidolite. Each of the micas was formed in a unit of characteristic...elements with respect to their positions in the pegmatite and probably with respect to relative time of...replacement layers formed by reactions between zonal pegmatite rock and deuteric, residual pegmatitic fluids |  | | Journal (article/letter/editorial) | | TOPAZ-BEARING PORTION OF THE BROWN DERBY NO. 1 PEGMATITE, GUNNISON COUNTY, COLORADO State P. E. RosuNBn;.G...topaz-bearing portion of the Brown Derby No. 1 pegmatite, Gunnison County, Colorado, has been reconstructed...relationships in the light of the recent model for pegmatite genesisby Jahns and Burnham (1969). The coarse-grained...gravitational settling of topaa in the melt. Lepidolite and cleavelandite crystallized later from the...form multiple quarta pods. INrnorucrrox The Brown Derby pegmatitesare a group of three main dike-like |  | | Journal (article/letter/editorial) | | Toxicologicalevaluation of preliminary animal studies reveais no sensitivity reactions or harmful effectson lung tissue... 1960 STIBIOTANTALITE FROM THE BROWN DERBY No. I PEGMATITE,COLORADO* E. Wu. HotNntcu, Departmenl of...M'ich'igan. The Brown Derby group of pegmatitesand especiallythe Brown Derby No. 1 pegmatite on the east...east side of Quartz Creek Valley in Gunnison County, Colorado, "are famous for the exceptionaldevelopment...they contain, ever sincethe discovery in them of lepidolite (Eckel, 1933).Minerals from this dike and its |  | | Journal (issue) | | BULLETIN OF FRIENDS OF MINERALOGY Volume 49 No. III to promote, support, protect and expand the collection...specimens. Inside This Issue Presidentâs Message 1 Officers 2 Emeralds on Exhibit 3 Minerals of...~~~~ BULLETIN of FRIENDS OF MINERALOGY Vol.49, No. III NATIONAL OFFICERS PRESIDENT: William Besse;... CHAPTER REPRESENTATIVES (ALSO BOARD MEMBERS) COLORADO CHAPTER: Bob Hembree; rhembree@comcast.net MIDWEST...OF MINERALOGY Vol.49, No. III BULLETIN of of FRIENDS OF MINERALOGY Vol.47, No.4 Page 3 The Stephenson |  | | Journal (article/letter/editorial) | | is the youngest mica to form, even following lepidolite. Indices of refraction are lower than those of...was done by the senior author in New Mexico and Colorado at various times during the summers of 1948, 1949...GeologicalSurvey; + Contribution from the Department Michigan, No. 169. of Mineralogy and Petrography, University...to the possibility that this rose mica was not lepidolite was given by Dana (1850), who states (p. 361)...154), "There is an abundanceof coarsegranite pegmatite bouldersin the immediate neighborhood of the quarry |  | | Report (issue) | | Nb)2O6 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m 2/m...white to pale reddish pink; pale yellowish brown to dark brown. Streak: White. Luster: Dull, earthy in aggregates...505(1) b = 11.063(2) c = 5.370(1) Z=4 X-ray Powder Pattern: San Diego mine, California, USA. 3.038...Chemistry: Nb2 O5 Ta2 O5 SiO2 Sb2 O3 Bi2 O3 FeO MnO CaO (1) 14.2 66.6 3.0 0.5 0.1 0.4 0.1 13.0 (2) 10.23 74...1.43 0.35 8.50 Total 97.9 96.62 (1) San Diego mine, California, USA; by electron microprobe, total Fe |  | | Journal (article/letter/editorial) | | AssrnA.cr Columbites may be radioactive because: 1) they contain isomorphous t/+(and Thar?) substituting...Radioactive columbite is related to a particular pegmatite district, its paragenetic position, and the presence...of the properties and textures of the opaque pegmatite minerals in polished section. Species studied...the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948), of a relatively...Phoenix Memorial Project, Nos. 150 and 204. 1 Contribution No. 250 from the Mineralogical Laboratory, Department |  | | Journal (article/letter/editorial) | | 3749/canmin.1600010 A TECTONIC EVALUATION OF PEGMATITE PARENT GRANITES SARAH L. HANSON Adrian College...Department, 110 S. Madison St., Adrian, Michigan 49221, USA ABSTRACT Pegmatites containing rare elements can...not fall neatly into these categories and include (1) those that exhibit mineralogical and chemical characteristics...suggested by the acronyms. The relationship between pegmatite family and granite tectonic type were re-examined...published granite compositions as a proxy for initial pegmatite composition, with special regard to the orogenic |  | | Journal (article/letter/editorial) | | coupling various acidic groups to silicon wafers. We had no expectation of creating a geometric lattice of functional...February 2015 MINERALS FROM THE HYATT MINE, TALCVILLE, ST. LAWRENCE COUNTY, NEW YORK. S. C. Chamberlain, Department...Zinc Corporation of America operates the new Hyatt mine on an orebody just south of the Oswegatchie River...Talcville in the Town of Edwards, St. Lawrence County, New York. The orebody consists of massive iron-rich...of sepiolite in the form of mountain leather, the mine has not, until recently, produced anything of particular |  | | Journal (article/letter/editorial) | | 079 (20" c )' 1. 3 6 2 702 7. 1 2 Specific gravity 190 3.33 2 9 s o c ) 4 (20" C )2 1 . 7 6 2 None... O 2 , 3 . 1 3a, n d 3 . 1 9 .F o r e a c hs o l u t i o ni n t h e s e r i e s , 6t o 1 2 h e a v y...specificgravities of the liquids after use ranged from * 1 to - 2 in the seconddecimal place. Specifcgrorily...sf r o m l i g h t y e l l o w ( t p . g r . : 3 . 1 9 ) t o l i g h t red (sp. gr.:2.92) at the end of...sulfoxide-methyleneiodide solution, prepared for a specific job, is no longer needed,the methyleneiodide can be recoveredin |  | | Journal (issue) | | Mineral News Vol. 14 No. 6 June, 1998 The Mineral Collector's Newsletter Pebble Beach Pegmatites Lake...Lake Buchanan, Llano County, Texas Art Smith 9118 Concho Str. Houston, Texas 77036 Ray Stegemoller...Canine Road Marble Falls, Texas 78654 .7 l Llano County has long been known for its rare-earth granitic...the year. Continued on page 6 l. âą Figure 1. Smoky quartz crystals from Pebble Beach pegmatites; Art...Geologist for Texas Gulf at their Frasch sulfur mine at New Gulf, Texas, I noticed a small vial with |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A summary...knowledge____________________________________ Future of Colorado mineralogy______________________________________...______________ ______ 1 1 3 4 6 7 11 12 16 28 31 364 ILLUSTRATION PLATE 1. Map showing selected...mineral deposits of Colorado ________________________________ In pocket III NOTE Plate 1, map showing selected...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of |  | | Journal (article/letter/editorial) | | This review indicates two composition fields, the 1 Journal Pre-proof first is that of hydrothermal...secondary hydrothermal and lP vapor-phase topaz. 1. Introduction na Keywords: topaz-bearing rocks;...F-rich topaz is typically confined to (see Table 1): i) highly evolved felsic igneous rocks enriched...shallow-intrusive textures are composed almost entirely of quartz and of topaz (Johannson, 1932); ii) late-stage...rhyolites ro and granites, and greisen-, pegmatite-, quartz-type veins; and iii) cavities formed by the |  | | Journal (article/letter/editorial) | | presented hereis (1) plagioclase, quartz,muscovite, (2) plagioclase, quartz, (8) quartz,perthite,plagioclase...perthite,quartz,(5) quartz,plagioclase, perthite,spodumene(or petalite),amblygonite, (6) quartz,spodumene...spodumene (or petalite),(7) quartz,microcline or perthite,(8) quartz,and (9) lepidoliteor lithian mica, plagioclase...plagioclase, quartz,microcline. Assemblages $ and 5 are subdividedto showverticalchangesin perthiteabundance...lastpositionin the sequence, followingthe monomineralic quartz assemblage, because sizableconcordant quartzbodiesarein |  | | Journal (issue) | | RECORD JANUARY-FEBRUARY 1995 âą VOLUME 26 NUMBER 1 âą $10 Wayne & Dona Leicht, 875 North Pacific Coast...Menzies Pink topaz from the Thomas Range, Juab County, U ta h .........................................to 4 cm, on matrix, from Ghundao Hill, Mardan district, Pakistan. F. John Barlow collection; photo by...edition is still reasonably priced, at $18 plus $1 postage ($2 foreign). We had originally planned to...College in Northfield, Minnesota, and made off with no less than 626 museum-quality specimens of minerals |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | S. Collins1 , Robert R. Cobban2 , Eugene E. Foord 1 , and Jack A, Murphy2 Prepared in cooperation with...360K, 5 1/4" (2)) 89-0206-C disk (Wordstar; 1.2 mb, 5 1/4") 89-2026-D disk (Wordstar; 1.44 mb, 3 1/2") 1989...program has been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the USGS...of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection...Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR |  | | Book | | Natural, Cultured and Imitation Alexander E. Fam Quartz Michael O'Donoghue Also availablefrom Butterworth-Heinemann...Butterworth-Heinemann Ltd 1992 All rights reserved. No part of this publication may be reproduced in any...xi Profile xii 1 Topaz - Historical perspectives 1 Introduction 1 Etymology of topaz 1 Topaz in ancient...and red topaz 71 Localities 72 Genesis 72 Orange-brown, or sherry coloured 'imperial' topaz Irradiation...Preto, Brazil, in the world gem trade. In addition, no one had previously made a comprehensive study of |  | | Journal (article/letter/editorial) | | Chemical Geology, 19 (1977) 1--42 1 © Elsevier Scientific Publishing Company, Amsterdam -- Printed... FLUORINE IN GRANITIC ROCKS AND MELTS: A REVIEW .1 J.C. BAILEY Institute for Petrology, University...granitic rocks and melts: A review. Chem. Geol., 19: 1-42. Proposed average fluorine contents for granite... with lesser amounts in hornblende, muscovite, quartz and accessories. However, accessory minerals --...delays the onset of crystallization, and promotes quartz, topaz and feldspars above biotite in the order |  | ÄernĂœ, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the VarutrĂ€sk granitic pegmatite, Sweden: The case of an âanomalousâ columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | granitic pegmatite, Sweden: The case of an âanomalousâ columbite-tantalite trend PETR CÌERNĂ,1,* RON CHAPMAN...CHAPMAN,1 KAREN FERREIRA,1 AND STEN-ANDERS SMEDS2 Department of Geological Sciences, University of Manitoba...36 Uppsala, Sweden 1 ABSTRACT The complex, petalite-subtype VarutrĂ€sk pegmatite in the Proterozoic rocks...is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated in eight units, but the (Nb,Ta)-oxide...attained saturation levels only in a late albite + lepidolite-bearing unit under conditions of high activity |  | | Book | | Special Publication No. 7 ___ __fu_r_G--eo_l_o-gy__________ o_f_t_h_e_S_o_c_I·e_ry Deposits to Mineral...Petr Cerny, and Francis Saupe. (Special publication no. 7 of the Society for Geology Applied to Mineral...Society for Geology Applied to Mineral Deposits; no. 7. TN490.A2L36 1989 669' .29-dc19 88-31553 This...nearly all metals and the inevitable closing of many mining operations, it is a matter of the industry's survival...decision, not only is a handy volume affered to the mining and processing community but also duplication of |  | | Book | | 42 C-BE WITHDRAWN FROM STOCK QMUL LIBRARY STOCK No. 55392 QMC 315880 8 llllllllll l/11111111111111"...slightly more than 1,700,000 tons \1/as produced domestically. 1-'Ieasured, indicated, and inferred uraniun1...mid-1957, of vvhich 70% is in New Mexico, 16% in Colorado, Utah, and Arizona, and 8% in Wyo1ning. These...minerals exploration, not only a1nong themselves but \1/ith spectacular success also with "weekend" and professional...mass efforts vvere organized in the United States, \1/here in 1955 some 10,000 laymen and prospectors, replete |  | | Journal (issue) | | , and D. R. Cook Hyalite from the Spruce Pine District, North Carolina ................................Pretoria Belgium: Paul Van Hee Deuzeldlaan 16-bus 1 B-2120 Schoten England: Roger S. Harker 2 Wellsic...of the editor. suggestions for authors See vol.9, no.3, p. 135, or write to the editor for a copy. The...permanence, early issues of the Record will probably fare no better. However, in recent years the Record has been...Showâ 1 9 7 8 / Some specimens from this unique private collection ore currently available. 1 4 2 2 |  | | Report (issue) | | replacement ratios-__________ Siderophyllite-lepidolite isomorphous series_-__-___Siderophyllites and...Zinnwaldites_ ______________________________ Ferroan lepidolite (cryophyllite)______________ Relation between...formulas representing steps in the siderophyllite-lepidolite series____________________ 39. Relation between...130 131 131 134 138 IV CONTENTS TABLES TABLE 1. 2. 3. 4. 5. 6. Relation between Li2O content, octahedral...formulas representing steps in the siderophyllite-lepidolite series -----_____-._-__-______ .___ Analyses |  | | Book (edition) | | 74-1155 ISBN: 0-442-26820-3 All rights reserved. No part of this work covered by the copyright hereon...of minerals. Includes bibliographical references. 1. Mineralogy-Dictionaries. I. Rapp, George Robert,...author. II. Weber, Ju”us, joint author. III. Title. 1 QE355.R6 549 .03 74-1155 ISBN 0-442-26820-3 151044...illustrations for AXINITE, Hyuga, Japan (12, column 1) and AZURITE, Concepcion del Oro, Zacatecas, Mexico...Vesuvius, Italy (12, column 2) and SEMSEYITE, Julcani mine, Huancavelica, Peru (#3, column 2). Color, page |  | | Book (edition) | | Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, NâChwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...Encyclopedia of minerals Sagiiache County Pu blic Library Saguache , Colorado DEMCO For Reference Not to...Wendell E. Wilson Library Saguache County Public Saguache, Colorado VAN NOSTRAND REINHOLD New York ...Number 89-5633 ISBN 0-442-27681-8 All rights reserved. No part of this work covered by the copyright hereon |
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Brown Derby No. 1, Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA