 | Zeng, N., Izawa, E., Motomura, Y., Lai, L. (2000) Silver Minerals and Paragenesis in the Kangjiawan Pb-Zn-Ag-Au Deposit Of the Shuikoushan Mineral District, Hunan Province, China. The Canadian Mineralogist, 38 (1) 11-22 doi:10.2113/gscanmin.38.1.11 | Journal (article/letter/editorial) | | IN THE KANGJIAWAN Pb–Zn–Ag–Au DEPOSIT OF THE SHUIKOUSHAN MINERAL DISTRICT, HUNAN PROVINCE, CHINA NANSHI...Republic of China ABSTRACT The Kangjiawan deposit, in the Shuikoushan district, Hunan Province, China, is a...hydrothermal Pb–Zn–Ag– Au deposit in this region. The orebodies consist mainly of pyritic Pb–Zn ores. Silver...associated with Pb–Zn mineralization. Ag-bearing Pb–Zn ores in the deposit are characterized by Ag > Cu > Sb...polybasite–arsenpolybasite, pearceite and pyrargyrite– proustite, and all are hosted in galena. The assemblages |  | | Journal (article/letter/editorial) | | and chemical constraints on the nature of the proustite–pyrargyrite solid-solution series Luca Bindi,1...belonging to the proustite–pyrargyrite group by evaluating 32 natural samples of proustite and 27 samples... The crystal structure of the members of the proustite–pyrargyrite solid solution consists of two sets...parallel to the c-axis. Each chain contains alternating Ag and S atoms, with each chain being connected by As...of a different Ag-S chain. The compositional data support the concept that proustite–pyrargyrite solid |  | Costagliola, Pilario, Di Benedetto, Francesco, Benvenuti, Marco, Bernardini, Gian Piero, Cipriani, Curzio, Lattanzi, Pierfranco F., Romanelli, Maurizio (2004) Chemical speciation of Ag in galena by EPR spectroscopy. American Mineralogist, 88 (8) 1345-1350 doi:10.2138/am-2003-8-918 | Journal (article/letter/editorial) | | 88, pages 1345–1350, 2003 Chemical speciation of Ag in galena by EPR spectroscopy PILARIO COSTAGLIOLA...did reveal small (few micrometers) inclusions of Ag-bearing phases, in which silver has a formal valence...techniques, revealing the presence of both Ag+ and Ag0. The Ag(Au) metallic species were apparently deposited...activities of S, Sb, Bi (Cu…) and high activity of Ag in the fluids. The occurrence of both homo- and hetero-atomic...hydrothermal fluids, which alternatively carried Ag or Au species, or both. INTRODUCTION The widespread |  | Wang, Minfang, Zhang, Xubo, Guo, Xiaonan, Pi, Daohui, Yang, Meijun (2018) Silver–bearing minerals in the Xinhua hydrothermal vein-type Pb-Zn deposit, South China. Mineralogy and Petrology, 112 (1) 85-103 doi:10.1007/s00710-017-0508-0 | Journal (article/letter/editorial) | | in the Xinhua hydrothermal vein-type Pb-Zn deposit, South China Minfang Wang 1 & Xubo Zhang 1 & Xiaonan...Xinhua deposit, Yunkaidashan area, South China. The Xinhua deposit is a hydrothermal vein–type Pb–Zn deposit...consists of a cordierite–biotite granite with a U–Pb zircon age of 244.3 ± 1.8– 251.9 ± 2.2 Ma. The mineralization... and tennantite are the main Ag–bearing minerals in the Xinhua deposit. The greatest concentration of...and Ag in the lattices of tetrahedrite series minerals suggests that Cu sites are occupied by Ag atoms |  | | Journal (article/letter/editorial) | | handling by Dr V Ettler 1. Introduction Silver (Ag) is a valuable economic metal that occurs naturally...with other elements, such as S, Sb, As, Bi, Pb, Cu, Te and Au, primarily as sulfide and sulfosalt ores in...(Rudnick and Gao, 2004). The typical range of mean Ag contents in soils is between 0.06 and 0.4 mg kg−1...reported values below 0.1 mg kg−1. Biologically, Ag is a non-essential element that, even at trace levels...of the noble metals, forming three ionic species (Ag+, Ag2+ and Ag3+) of which only the monovalent form |  | | Catalog/List | | CEO Co-Chairman of the Board David Herskowitz Director Jim Halperin Jim Halperin Co-Chairman Co-Chairman...CORPORATE OFFICERS R. Steven Ivy, Co-Chairman James L. Halperin, Co-Chairman Gregory J. Rohan, President...FLUORESCENT ENGLISH FLUORITE Rogerley Mine, Weardle, Co. Durham, UK The famous Rogerley Mine in northern...Lopez Mining District, Chupadera Mountains, Socorro Co., New Mexico This hydrothermally-formed goethite... Chupadera Mountains, Socorro Co., New Mexico Goethite is an iron ore known since prehistoric times, |
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