 | | Report (issue) | | Deposits of the Poncha Springs NE Quadrangle, Chaffee County,Colorado By RALPH E. VAN ALSTINE With a section... PAPER 626 Prepared in cooperation with the Colorado State Mining Industrial Development Board UNITED...Rhyolitic ash-flow tuff ______________________ _ Nathrop Volcanics _________________________ _ Browns Canyon...Ralph E. Van Alstine and Doak C. Cox _________ _ Colorado-American mine ______________ -_Delay adit and...Poncha Springs NE quadrangle. Geologic map of the Colorado-American fluorspar mine, Browns Canyon district |  | | Journal (article/letter/editorial) | | garnet from the Topopah Spring Tuff at Yucca Mountain, Nevada, USA R. J. MOSCATI* AND C. A. JOHNSON U.S...Federal Center, Box 25046, MS 963, Denver, CO 80225, USA [Received 20 January 2014; Accepted 10 April 2014;...Spring Tuff of the Paintbrush Group from Yucca Mountain, in southern Nevada. The Miocene-age Topopah Spring...assemblage of tridymite (commonly inverted to cristobalite or quartz), sanidine and locally, hematite and/or...not found in the Topopah Spring Tuff at Yucca Mountain. Based on their occurrence only in lithophysae |  | | Journal (article/letter/editorial) | | J.N.ROSHOLT U.S. GeologicalSurvey, Denver, Colorado, USA and D.C.NOBLE Department of Geological Sciences... Harvard University, Cam bridge, Massachusetts, USA Received 20 May 1969 Dense primarily crystallized...of the specimens are devitrified, containing cristobalite as the silica polymorph; others are granophyrically...0.94 +-0.01 0.98 + 0.01 1.0 Nathrop Volcanics (Oligocene), Colorado (aphyric rhyolite lava) [ 16, 17]...from the Western United States [6, 19]. The Ruby Mountain glass is unusually rich in uranium. The thorium |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...above sea level; with more than eight hundred mountain peaks exceed ing 11,000 feet, the average elevation...and J. A. Mur phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS... Quartz was a familiar gemstone to many early Colorado residents, as documented by an extensive body |  | | Report (issue) | | Denver, Colorado, USA © 2011 by Lithographie, LLC P.O. Box 11613 • Denver, CO 80211 • USA Phone 1.303...Topaz ALFREDO PETROV & JOHN RAKOVAN 34. Colorful Colorado DAVID W. BUNK 42. Mongolian Topaz: The Gorkhi...and quartz, 5.3 cm tall Sawtooth Mountains, Boise County, Idaho shown under longwave ultraviolet light (left)...Province, Afghanistan; San Diego County, California, and Thomas Range, Utah, USA Associated Species: In topaz...topaz, after Foord et al., 1990 (Jefferson County) Colorado pegmatites, which formed under low water conditions |  | 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) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Journal (article/letter/editorial) | | zektzerite, all from Washington Pass in Okanogan County —which are known only from the state; the others...in Snohomish County, ferritungstite from Germania mine near Fruitland in Stevens County, and paulingite...from Rock Island Dam near Wenat chee in Douglas County. In addition, many localities pro duce fine-quality...preparing the alphabet ical list of localities. Chelan County Crown Point mine, near Holden; M O L Y B D E N...situ and as float; A C T I N O L I T E . Clark County Yacolt, Big Tree Creek, southeast of town in road |  | | Journal (issue) | | Alves Minerals of the Black Pine mine, Granite County, Montana ........................................California mineral collector, specializing in San Diego County and Baja California spec imens through purchase...largest land transactions in the history of San Diego county, and moved to the Hi Hope Ranch near Oceanside...building up the M useum ’s collection of the San Diego County minerals. The Museum recently reopened its remodeled... mine, lot 18, range X I 1 o f Buckingham, Ottawa county, Q . . . Presented by W. A. Allan 1886 . . . Laurentian |  | | Book (edition) | | the out- standing shows of the annual San Diego County Fair at Del Mar, California. In addition, the collections... Denver, Australia, MinMassa- California, Colorado, Gregory, Speci- Bottley England, and others...MINERALOGY (Natural History), among them the Edwardes Ruby and the magnificent yellow Colenso diamond, a beautifully... Other well-known polymorphs are tridymite, cristobalite, and quartz, all of which are silicon dioxide...of light over tremendous distances, are synthetic ruby crystals. Much has been learned about how crystals |  | | Catalog/List | | radial groups on limonite ....... . Utah Toelle County, Gold Hill, Gold Hill mine --=.rransparent micro... AJOITE Copper aluminum silicate' Arizona Pima County, Ajo, New Cornelia mine Sky blue micro xls and...aggregates in quartz . ALTAITE Lead telluride • Colorado Saguache County, Klondike mine Brilliant metallic tin...sodium calcium uranium carbonate. Utah San Juan County, Moab ~ellow to yellow-green ¼x¼" single rhombohedral...fluorescence . ANKERITE Calcium magnesium iron carbonate Colorado Gilman, Empire Zinc mine Sharp pink to tan rhombohedral | | | Book (edition) | | at the outstanding shows of the annual San Diego County Fair at Del Mar, California. In addition, the collections...Los Angeles, California, E. M. Gunnell, Denver, Colorado, Specimen Minerals, Ltd., Woodville West, South...MINERALOGY (Natural History), among them the Edwardes Ruby and the magnificent yellow Colenso diamond, a beautifully... Other well-known polymorphs are tridymite, cristobalite, and quartz, all of which are silicon dioxide...of light over tremendous distances, are synthetic ruby crystals. Much has been learned about how crystals |  | | Catalog/List | | PHOTOGRAPH: _ VANADINITE Apache mine, near Globe, Gila County, Arizona. Sharp hexagonal barrel-shaped crystal...calcium hydroxy-silicate. Ca lifornia Riverside County, Crestmore. White prismatic crystalline on merwinite...QUARTZ AJOITE Copper aluminum silicate. Arizona Pima County, Ajo, New Cornelia mine. Sky-blue micro xls and...and coatings on monzonite .. Arizona Pima County, Ajo, New Cornelia mine. Sky-blue crystals and masses...aluminum silicate. CLEAVELANDITE California San Diego County, Himalaya mine. White crystalled aggregates; some |  | | Book (volume) | | Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken...Effects. PRINCIPAL GEMSTONES Diamond, Corundum (Ruby and Sapphire), Beryl, Topaz, Opal. IMPORTANT GEMSTONES...Mt. Mica Eh Towne Quarry 180 Tourmaline Queen Mountain IgI Tourmaline crystal (color) following 112 Tourmaline...in the small cavities in limestone in Herkimer County, New York, only one quartz crystal may be found |  | | Book | | commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...cities, and many of today’s prosperous western county seats began as mining-boom camps. trating sand...Whether you such as those listed alphabetically by county, township, and range in Part II of this book. Where...in his work, that he may know first of all what mountain or hill, what valley or plain, can be prospected...examples of all rock types. Most so-called rocks are mountain-building materials; they are massive, colored |  | | Report (issue) | | younger h1gh-s1Uca rhyoMtes and granites from Colorado and north-central New Mexico by 1X Celia H....younger high-silica rhyolites and granites from Colorado and north-central New Wexico Celia H. Steigerwald*...younger high-silica rhyolites and granites from Colorado and north-central Ney Mexico* The data were compiled...the many granite molybdenite system prospects in Colorado* We then decided to broaden the data bank to include...younger high-silica rhyolites and granites in Colorado for which chemical data were available* Our aim |  | | Book (edition) | | the outstanding sho,vs of the annual San Diego County Fair at Del Mar, California. In addition, the collections...Angeles, California, E. l\lf. Gunnell, Denver, Colorado, Specin1en Minerals, Ltd., Woodville \Vest, South...Other well-knovvn polymorphs are tridy1nite, cristobalite, and quartz, al I of vvhich are silicon dioxide...of light over tremendous distances, are synthetic ruby crystals. Much has been learned about ho"' crystals...purple crystals, 5" by 4", Iron Station, Lincoln County, North Carolina. CRYST AL GROWTH 73 light from |  | | Journal (issue) | | in a matter of mlnutes ...Your living room, a mountain cabin, or even a motorhome (with access to 110)...Becky Ulrey. Executlw Secrelary 680 N 3rd E . Mountain Home, 10 83647 8111 Walther. Treasurer 3724 W... From the high yield sapphire beds of the GEM MOUNTAIN mine near Philipsburg. The sapphire bearing gravel...because of the heavy sapphire content • in the GEM MOUNTAIN fields. It's exciting!! It ' s a great gift. ...cards) $12.00 each bag or 2/$20.00 PREPAID to any USA llddr. . (W•hlngton r•ldents add S.8% tu) PIXIES |  | | Book | | 193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...ALABAMA Iron phosphate mineral locality at Indian Mountain, Alabama (by H. Harwood) 5:241-244 Iron-manganese |  | | Journal (article/letter/editorial) | | anthophyllite by Borg and Smith (1969, p. 406). It Talc, cristobalite, magnetite, olivine, and a cardiffers from that...describedsampleswhich contain Mountains, Iron Formation, Ruby relevantto this problem in drill Coexisting actinolites...Bothnia, the metamorphosediron formation of the Ruby cores taken from beneath obtained some of these...Ferassemblage the The actinolitein some of the Ruby Mountain assemblage,and apparently rebeen never has Mag)+Qtz...syntheticsystem;Papike, Gulf of Bothnia,Finland Ruby the in (1973) that found Shaw and : :: burn"ton |  | | Catalog/List | | specimen from the Apache mine, near Globe, Gila County, Arizona GLOBES AND ATLASES ...... . 79 Sharp...calcium hydroxy-silicate. California Riverside County, Crestmore. White prismatic crystalline on merwinitegehlenite... AJOITE Copper aluminum silicate. Arizona Pima County, Ajo, New Cornelia mine. Sky- blue micro xls and...and coatings on monzonite . Arizona Pima County, Ajo, New Cornelia mine. S.ky-bJue crystals and masses...aluminum silicate. CLEAVELANDITE California San Diego County, Himalaya mine. White crystalled aggregates; some |  | | Report (issue) | | 31 University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs... Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph by J. Scovil....Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References 467 Contributors...Pyromorphite after Galena with Conichalcite Gold, Round Mountain Mine Quartz, Lovelock area Acanthite Grossular...Almandine-Spessartine Annabergite Gypsum Quartz, Petersen Mountain Heterogenite Quartz (amethyst), faceted Arsenolite | | | Report (issue) | | 3i University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs... Majuba Hill Mine, Antelope district, Pershing County. N. Prenn coJlection. Photograph by J. Scovil....Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper MINERAL CATALOG 91 121 Gregory...Gold, Humboldt Mountain Gold, Mexican Mine Gold, Majuba Placer Gold, Round Mountain Mine Grossular,...Quartz (amethyst) and Calcite Quartz, Petersen Mountain Quartz (amethyst), faceted Quartz with Spessartine |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted...Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's finest ilmenite specimens |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | B. Hoover: U.S.G.S., Federal Center, Lakewood, Colorado. John M. Hughes: Dept. of Geology, Miami University...Louise Reif: U. S. G. S., Federal Center, Lakewood, Colorado. Charles B. Sclar: Dept. of Earth Sciences, Lehigh...usage) Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho...Communications Chemical Society of Japan Bulletin Colorado School of Mines Quarterly Crystal Structure Reports...Ledge mine, Nevada Co., Jamestown, Tuolumne Co., Colorado quartz mine, Mariposa Co., Bonanza mine, Trinity |
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