... experiment silver gold tin sphalerite hydrothermal systems The possibility of Au and Ag incorporation in significant amounts in In-bearing sphalerite at high temperatures (> 700 °C) following the scheme Me + + In 3+ ↔ 2Zn 2+ (Me + = Au + , Ag + , Cu + ) is shown in ( Tonkacheev et al., 2019...

..., Germany. Theuerdankite occurs as aggregates of anhedral grains up to 3 mm in size, growing in cavities of strongly supergene-weathered material consisting of native silver and chlorargyrite (but with calcite present). It is dark violet, changing to reddish and black when exposed to the air and light...

... as a dextral transcurrent fault during a D 3 deformation event. Copper-zinc-silver prospects and minor occurrences are abundant in the Powell block northwest of the Joliet breccia ( Fig. 2 ). Although all were studied in detail, only the Powell F-zone and Powell D-zone ( Fig. 6 ) data are presented...

...N.V. Astakhova; O.N. Kolesnik; A.S. Astakhov; X. Shi; L. Hu; A.V. Alatortsev Abstract ––We studied the distribution of gold, silver, and platinum group elements (Pd, Pt, Rh, Ir, and Ru) in two bottom sediment cores of the southern Chukchi Sea. It is shown that the Holocene pelite–silty sediments...

... accounting for >70% of the gold produced in the United States ( Roberts, 1966 ; Muntean et al., 2018 ). The northern Shoshone Range contains three mining districts (Hilltop, Lewis, and Bullion), with silver discovered in the Lewis district in 1867 and gold discovered in the Bullion district in 1905...

...), antimony, arsenic, beryllium, bismuth, caesium, copper, chromium, cobalt, gallium, germanium, gold, graphite (natural), hafnium, helium, indium, lithium, molybdenum, nickel, niobium, phosphate, platinum group metals (PGMs), potash, rare earth elements (REEs), rhenium, rubidium, scandium, selenium, silver...

... different correlations with gold solubility and gold fineness. Average rates of change for the correlations are quantified, showing distinct values in the four pH-log f O 2 fields of (I) HSO 4 − , (II) SO 4 2− , (III) H 2 S, and (IV) HS − , where dominant gold and silver complexes have different...

... geochemistry to explore for Au mineralization has faced some challenges. For this type of mineralization, the best pathfinder element is Au itself; however, the sensitivity of the technique remains to be improved for Au and other precious metals including silver (Ag). For example, at the time of sample...

...Qiuzhi He; Qingze Chen; Runliang Zhu; Jing Du; Shiya He; Guocheng Lv; Cheng Gu; Aiqin Wang Abstract Supported silver nanoparticles (Ag NPs) have been used extensively as antibacterial agents in biomedicine, biotechnology, and environmental remediation. However, a facile and scalable method...

... of America 2022 Mineralogical Society of America Pyradoketosite silver antimony sulfosalt crystal structure new mineral Monte Arsiccio mine Apuan Alps Tuscany Italy More than 150 Ag-chalcogenides are currently known as valid mineral species, mainly represented by sulfosalts (e.g...

... K. In the high-temperature structure, the A module layer is identical to that at room temperature. On the contrary, in the B module layer silver atoms are distributed along a diffusion path thus leading to a quasi-liquid displacement for these ions. This is characteristic of superionic...

... of General Chemistry , 81 , 1288 – 1301 . Sluzhenikin S.F. and Mokhov A.V. ( 2015 ) Gold and silver in PGE-Cu-Ni and PGE pres of the Noril`sk deposit, Russia . Mineralium Deposita , 50 , 465 – 492 . Smith D.G.W. and Nickel E.H. ( 2007 ) A system for codification...

...Jean Milot; Janne Blichert-Toft; Mariano Ayarzagüena Sanz; Chloé Malod-Dognin; Philippe Télouk; Francis Albarède Abstract Silver played a key role in the progressive monetization of early Mediterranean civilizations. We combine Pb and Ag isotopes with volatile trace elements (Bi, Sb...

... in the veins ( Fig. 3 ). Pyrite, galena, chalcopyrite, sphalerite, hematite, acanthite, native gold, electrum, and native silver are present in the ores ( Fig. 4b ). Altaite, petzite, hessite, and melonite are rare. Electrum (>95%) is the major gold- and silver-bearing mineral, with the remaining ~5% in Au...

..., pentlandite, and silver tellurides (volynskite, empressite). It is well seen that pyrrhotite is replaced by pyrite, and calcite, by siderite ( Fig. 7 a , b ). Quartz and siderite form a fine-grained aggregate of subgraphic structure, which replaces the original rock layer by layer. The highly ferroan...

... circular inclusion was identified with two “interlocking” phases, palladodymite(?) and keithconnite ( Table 7 analysis 12, Table 8 analysis 5). Other spherical inclusions were observed but were too small (≤1 μm) for definitive identification. Gold is nearly always alloyed with silver...

...Julien Kimmig; Brian R. Pratt The Selwyn basin and Mackenzie platform of northwestern Canada house an array of mineral deposits and prospects that are rich in silver, including Neoproterozoic red-bed or Kupferschiefer-type Cu and lower Paleozoic sedimentary exhalative (SEDEX) and Zn–Pb deposits...

... . Jian , W. , Mao , J.W. , Lehmann , B. , Li , Y.H. , Ye , H.S. , Cai , J.H. , and Li , Z.Y. , 2020 , Lingbaoite, AgTe 3 , a new silver telluride from the Xiaoqinling gold district, central China : American Mineralogist , v. 105 , p. 745 – 755 . Jiang , N. , Xu...