 | | Journal (article/letter/editorial) | | precious-metal mineralization in the southwestern Nevada volcanic field, USA S t e p h e n B. C a s t o r a a n d...i s s b "Nevada Bureau of Mines and Geology, Mackay School of Mines, Universityof Nevada, Reno, NV 89557...89557. USA bDepartment of Geological Sciences, Mackay School of Mines, Universityof Nevada, Reno. NV...NV 89557, USA (Received August 27, 1991; accepted after revision January 27, 1992 ) ABSTRACT Castor, S...southwestern Nevada volcanic field, USA. Ore Geol. Rev., 7: 193-223. The southwestern Nevada volcanic field |  | | Journal (article/letter/editorial) | | epithermal deposits: constraints from the Broken Hills deposit, Hauraki Goldfield, New Zealand Helen A...Springer-Verlag 2012 Abstract The 7.1 Ma Broken Hills adularia-sericite AuâAg deposit is currently the...New Zealand. The opaque minerals include pyrite, electrum, acanthite (Ag2S), sphalerite, and galena, which...Hauraki Goldfield and elsewhere worldwide. Broken Hills ores also contain the less common minerals aguilarite...and petrovskaite occur with high-fineness electrum. Broken Hills is the only deposit in the Hauraki Goldfield |  | | Journal (article/letter/editorial) | | âAu-rich electrumâ or âhighfineness goldâ (1000Ă·700), âelectrumâ (700Ă·250), âAg-rich electrumâ or old...Nazareno, Pongkor (Greffie et al. 2002), and Broken Hills (Cocker et al. 2013), and, therefore, their presence...Maikain â â 650â999 â Nesterenko et al. (1984) Broken Hills â â 620â670 â Cocker et al. (2013) Tambang Sawah...Rabenstein â â 360â610 â Majzlan (2009) Broken Hills â â 560â670 â Cocker et al. (2013) Dorozhnoe Uy+Pet/Au...(2010) Lac Bullfrog Uy/Au II/Au I Type 3 650â680 840 Castor and Sjoberg (1993) Original Bullfrog â â 570â670 |  | | Journal (article/letter/editorial) | | acanthite, solid solutions Ag2-xAuxS (x < 0.5), and electrum are produced in the Ag-rich binary system Ag2SâAu2S...(fineness 1000â700, Ag0.0Au1.0âAg0.44Au0.56), electrum (700â250, Ag0.44Au0.56âAg0.85Au0.15), kustelite...acanthite, solid solutions Ag2-xAuxS (x < 0.5), and electrum. In the Ag-poor systems, petrovskaite, high-fineness...Kyzylalmasai (Uzbekistan) (Koneev, 2006); 21, Pongkor (USA) (Warmada et al., 2003); 22, Nazareño (Peru) (GreffiĂ©...(Indonesia) (Marcoux et al., 1993); 24, Comstock (USA) (Barton et al., 1978); 25, Tambang Seiwo (Indonesia) |  | | Journal (article/letter/editorial) | | âpolybasite-pearceiteâtennantite-tetrahedriteâelectrum. Minerals of the polybasite-pearceite series,...oxyhydroxides and covellite as boxwork fillings. Primary electrum grains with a composition of about Au0.6Ag0.4...replacing minerals commonly associated with vermicular electrum of a greater fineness (up to Au0.8Ag0.2). The...West Java, Indonesia, and Nazareño, ShilaPaula district, southern PerĂș, in order to examine the spatial...pyrite, sphalerite, galena, polybasite-pearceite, electrum, and native silver disseminated in a gangue comprising |  | | Book | | f. MIMING DISTRICTS and MINERAL RESOURCES of NEVADA by FRANCIS CHURCH LINCOLN i r r i i ; %â ... ; 'jxt . 1 â \ MINING DISTRICTS and MINERAL RESOURCES of NEVADA by FRANCIS CHURCH LINCOLN...LINCOLN 0 ll ; RENO NEVADA NEWSLETTER PUBLISHING COMPANY 1923 PREFACE Earlier Works. The object of...infor mation concerning the mining districts and mineral resources of Nevada. No comprehensive work of...peared for a number of years. In the early days of Nevada min ing, from 1866 to 1878, the field was covered |  | | Journal (article/letter/editorial) | | Minerals Corporation, 230 South Rock Blvd, Reno, Nevada 89502, USA Ricardo CASTROVIEJO Universidad PolitĂ©cnica...later open space infill resembles the Shila Paula district (Chauvet et al. 2006). Fluid inclusion petrography... argentite (now acanthite), and AuâAg alloy (âelectrumâ). This Ag2S enrichment and Sb2S3 depletion during...of the system. The core is still undisclosed by mining works, but the available geochemical evidence (logAg/log...and is located ~520 km southeast of Lima in the district of Coronel Castañeda, Parinacochas province, Ayacucho |  | | Book | | UNDERGROUND Mining Methods Engineering Fundamentals and International Case Studies Edited by William...for Mining, Metallurgy, and Exploration, Inc. (SME) 8307 Shaffer Parkway Littleton, Colorado, USA 80127...minerals professionals. Copyright 0 2001 Society for Mining, Metallurgy, and Exploration, Inc. All Rights Reserved...and are not necessarily those of the Society for Mining, Metallurgy, and Exploration, Inc. The mention...Congress Cataloging-in-PublicationData Underground mining methods : engineering fundamentals and international |
|
New Bullfrog Mine, Bullfrog Mining District, Bullfrog Hills, Nye County, Nevada, USA