 | Foley, Nora K., Caddey, Stanton W., Byington, Craig B., Vardiman, David M. (1993) Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado. Professional Paper 1537. US Geological Survey doi:10.3133/pp1537 | Report (issue) | | Mineralogy, Mineral Chemistry, and Paragenesis of Gold, Silver, and Base-Metal Ores of the North Amethyst...Amethyst Vein System, Sari Juan Mountains, Mineral County, Colorado U.S. GEOLOGICAL SURVEY PROFESSIONAL...Alaska-Rm. 101, 4230 University Dr. • LAKEWOOD, Colorado-Federal Center, Bldg. 810 • MENLO PARK, California-Bldg...Mississippi-Bldg. 3101 Mineralogy, Mineral Chemistry, and Paragenesis of Gold, Silver, and Base-Metal Ores of the...the North Amethyst Vein System, San Juan Mountains, Mineral County, Colorado By NORA K. FOLEY, STANTON |  | | Journal (article/letter/editorial) | | Rich In Silver Creede Mining District, Mineral County, Colorado, USA By Ken Kucera Fabulous mineral specimens...private and museum collections the world over. Its mineral wealth is well represented at the Mines Museum...best-known specimens are native silver in a wide array of habits and mineral associations. Also recovered...variety amethyst. Table of Contents 2 Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy...Homestake Mining Company 8 “Pirate’s Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary | | | Journal (article/letter/editorial) | | Rich In Silver Creede Mining District, Mineral County, Colorado, USA By Ken Kucera Fabulous mineral specimens...private and museum collections the world over. Its mineral wealth is well represented at the Mines Museum...best-known specimens are native silver in a wide array of habits and mineral associations. Also recovered...variety amethyst. Table of Contents 2 Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy...Homestake Mining Company 8 “Pirate’s Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary |  | | Journal (article/letter/editorial) | | Rich In Silver Creede Mining District, Mineral County, Colorado, USA By Ken Kucera Fabulous mineral specimens...private and museum collections the world over. Its mineral wealth is well represented at the Mines Museum...best-known specimens are native silver in a wide array of habits and mineral associations. Also recovered...variety amethyst. Table of Contents 2 Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy...Homestake Mining Company 8 “Pirate’s Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary | | | Journal (article/letter/editorial) | | Rich In Silver Creede Mining District, Mineral County, Colorado, USA By Ken Kucera Fabulous mineral specimens...private and museum collections the world over. Its mineral wealth is well represented at the Mines Museum...best-known specimens are native silver in a wide array of habits and mineral associations. Also recovered...variety amethyst. Table of Contents 2 Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy...Homestake Mining Company 8 “Pirate’s Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary |  | | Journal (article/letter/editorial) | | featured proustite, an arsenic ember of the major ruby-silver family (Cook 1996). The species was chosen because...distribution and historical importance as an ore mineral of silver, well-crystallized specimens of pyrargyrite...recovered from an interesting array of important mining districts; it is currently available from Mexico...several Mexican occurrences. Ideally, pyrargyrite is silver antimony sulfide (Ag3SbS,). Most analyses show...several percent. Pynte, acanthite, polybasite, and silver pseudomorphs after pyrargyrite are reported. It |  | | Journal (article/letter/editorial) | | Chenzhou, Hunan Province, China T here are certain mineral species that collectors either consciously or subconsciously...Tucson Gem and Mineral Show. Bournonite is a steel-gray to iron-black metallic mineral with a luster that...commonest sulfosalts and is a locally important ore mineral in many metal deposits. Its wide distribution is...org Web site. It typically forms in hydrothermal vein systems at intermediate temperatures and is often...a generally massive, finegrained accessory ore mineral. It has been reported from such disparate localities |  | | Journal (article/letter/editorial) | | Broken Hill, New South Wales, Australia F or mineral collectors introduced to the hobby through the...arts, rhodonite may well have been the first pink mineral with which they became acquainted. It is plentiful...topic. Although rhodonite is best known as a pink mineral, its color can range from rose-pink through various...Franklin County; at Coventry and Irasburgh, Orleans County; and at Cavendish, Windsor County, Vermont... at Keene, and southeast of Hinsdale, Cheshire County, and elsewhere in New Hampshire and is reported |  | | Report (issue) | | Research on Mineral Resources-1991 Program and Abstracts Seventh Annual V.E. McKelvey Forum on Mineral and Energy...GEOLOGICAL SURVEY CIRCULAR 1062 .r • San jose tin~silver mine at Oruro, Bolivia, where high-grade ores are...breccias of Miocene age. One of the world's largest silver deposits, it has been worked almost continuously...George E. Ericksen. Cover: USGS Research on Mineral Resources-1991 Program and Abstracts Edited by... KOTRA Seventh Annual V.E. McKelvey Forum on Mineral and Energy Resources, held in Reno, Nevada, February |  | | Report (issue) | | lithosphere by G. L. Farmer (CIRES, University of Colorado, Department of Geological Sciences, Boulder, CO...ofAu-Ag mineralized rocks of the North Amethyst vein, Mineral County, Colorado by N. K. Foley (U.S. Geological...92093) 108 4OAr/39Ar studies offluid inclusions in vein quartz from Battle Mountain, Nevada by E. H. McKee...implications for lithospheric growth in the western USA by M. A. Menzies (Department of Geology, University...and A. K. Sinha 196 Argon thermochronology of mineral deposits by L. W. Snee (U.S. Geological Survey |  | | Book | | INTRODUCTION 1.1. Mineral Deposit versus Orebody 1.2. Styles of Mineralization and Morphology of Mineral Deposits...Distribution of Mineral Deposits 1.3. Understanding Mineral Deposits CHAPTER 2. FORMATION OF MINERAL DEPOSITS...49 54 56 73 89 92 CHAPTER 3. INTERPRETATION OF MINERAL DEPOSITS - I 3.1. Introduction 3.2. Geologic Setting...124 131 142 147 CHAPTER 4. INTERPRETATION OF MINERAL DEPOSITS - II 4.1. Stable Isotopes 4.2. Sulfur... A Comprehensive Example: The Cree de District, Colorado, USA 4.11. Summary 4.12. Recommended Reading |  | | Journal (article/letter/editorial) | | area, Saudi Arabia Rami A. Bakhsh Department of Mineral Resources and Rocks, Faculty of Earth Sciences...et al., 2013; Kozub, 2014) are mostly native silver, silver amalgams, stromeyerite (AgCuS), jalpaite (Ag3CuS2)..."Arabian Shield" extending from Jordan, in the north, to Yemen, in the south (Fig. 1). The Zalm gold...attachment (SEM-EDX), with the verification of mineral identification by X-ray diffraction (XRD) analyses...investigated and explored for gold in the Zalm district. Sahl (1985) mapped the Zalim quadrangle at 1:100 |  | | Corporate Document | | Idaho Midas Elko County, Nevada Winnemucca, Nevada Aurora (mill) Mineral County, Nevada Monte Cristo...Cristo Esmeralda County, Nevada 2017 2018 Lucky Friday Casa Berardi Val d’Or, Québec Val d’Or, Québec... Elko County, Nevada Hatter Graben Elko County, Nevada San Juan Silver Fire Creek Creede, Colorado...Colorado Lander County, Nevada 2019 G O L D R E S E RVES (MAuOz) 2.8 2.7 San Sebastian 2.3 Durango...Founded in 1891, Hecla Mining Company (NYSE:HL) is a leading low-cost U.S. silver producer with operating |  | | Corporate Document | | remarkable 130 1891–2021 HECLA MINING COMPANY 2020 ANNUAL REPORT A remarkable year: A relentless... FOUNDED IN 1891, HECLA MINING Greens Creek (Ag, Au, Pb, Zn) COMPANY IS THE LARGEST SILVER Admiralty Island...Kinskuch (Ag) PRODUCER IN THE UNITED STATES. Silver Valley (Ag, Pb, Zn) Alice Arm, BC IN ADDITION...IN Midas (Au) Elko County, Nevada WORLD-CLASS MINING DISTRICTS THROUGHOUT NORTH AMERICA. Hollister...(Au) Elko County, Nevada San Juan Silver (Ag, Pb, Zn) Mineral County, Nevada Esmeralda County, Nevada |  | | Corporate Document | | SILVER: THE STORY OF OUR PAST, THE FOUNDATION OF OUR FUTURE 2021 ANNUAL REPORT We’re at an inflection...from fossil fuels toward a clean energy economy, silver will play a critical role. And the demand for this...number one U.S. silver producer, we’re ready, with an expected 13.5 million ounces of silver production this... Founded in 1891, Hecla Mining Company is the largest silver producer in the United States. In...pre-development projects in world-class mining districts throughout North America. FINANCIAL HIGHLIGHTS Dollars |  | | Report (issue) | | Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product...crustal structure near the Battle Mountain-Eureka mineral trend from geophysical constraints V.J.S. Grauch...Crustal structure and its relation to gold belts in north-central Nevada: Overview and progress report V.J...for the Crescent Valley-Indepencence Lineament, north-central Nevada Stephen G. Peters..................and gold deposition in the Betze deposit, Eureka County, Nevada M. B. Woitsekhowskaya and S.G. ftters. |
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