| | 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...Hauraki Goldfield and elsewhere worldwide. Broken Hills ores also contain the less common minerals aguilarite...naumannite (Ag2Se), petrovskaite (AuAgS), uytenbogaardtite (Ag3AuS2), fischesserite (Ag3AuSe2), an unnamed...minerals. Uytenbogaardtite and petrovskaite occur with high-fineness electrum. Broken Hills is the only | | | Journal (article/letter/editorial) | (Au-quartz). Dark rims around native gold are uytenbogaardtite (Ag3AuS2) or petrovskaite (AgAuS), or a mixture...mixture of acanthite (Ag2S) with uytenbogaardtite or uytenbogaardtite with petrovskaite. In the ore samples...depend on the primary fineness of native Au: uytenbogaardtite forms after gold of fineness above 380â°, whereas...presence of uytenbogaardtite or petrovskaite, or a mixture of acanthite with uytenbogaardtite or uytenbogaardtite...Au-quartz-sulfide, and other deposits. Keywords: Uytenbogaardtite, petrovskaite, native gold, fineness, reactions | | | Journal (article/letter/editorial) | intermediate composition produce petrovskaite, uytenbogaardtite, and solid solutions Ag2-xAuxS (0.5 < x <...the wide variations in Au and Ag contents in uytenbogaardtite and petrovskaite from different deposits are...All rights reserved. Keywords: AgâAuâS melt; uytenbogaardtite; petrovskaite; solid solutions Ag2-xAuxS ...al., 1976). In the 1980s, Au-Ag sulfides, uytenbogaardtite, and petrovskaite were discovered (Barton...ÂșC), ÎČ-acanthite (Ag2S, α â ÎČ at 177 ÂșC), ÎČ-uytenbogaardtite (Ag3AuS2, α â ÎČ at 183 ÂșC), and ÎČpetrovskaite | | | Journal (article/letter/editorial) | replaced by Au-Ag sulfide, locally identified as uytenbogaardtite (Ag3AuS2), and/or by acanthite, with both...West Java, Indonesia, and Nazareño, ShilaPaula district, southern PerĂș, in order to examine the spatial...using Co-K radiation. X-ray powder data of uytenbogaardtite and acanthite were obtained using the Debye-Scherrer...the Au-Ag sulfide lies between theoretical uytenbogaardtite (Ag3AuS2), penginite (Ag,Cu)4Au(S,Se)4 and...microinclusions of acanthite and/or Aurich electrum. Uytenbogaardtite has been confirmed in other parts of the Pongkor | | | 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...of the system. The core is still undisclosed by mining works, but the available geochemical evidence (logAg/log...evolution of the system below 200 ÂșC (stephanite, uytenbogaardtite, jalpaite, stromeyerite, mckinstryite, among...proustiteâpyrargyrite, pearceiteâpolybasite, acanthite, uytenbogaardtite, Peru Introduction The Pallancata vein occurs |
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New Bullfrog Mine, Bullfrog Mining District, Bullfrog Hills, Nye County, Nevada, USA