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Title Au incorporation in gold-bearing sulphides Subtitle (Western Carpathians) Author info Peter Andráš, Martin Chovan Author Andráš Peter 1953- (70%) UMBFP04 - Katedra životného prostredia
Co-authors Chovan Martin (30%)
Source document Selected Sb-Au, Cu-Ag and Hg ore deposits - origin, mineralogy, environmental problems. S. 61-83. - Košice : Technická univerzita, 2015 / Zamarský Vítězslav ; Števulová Naděžda ; Marschalko Marian ; Buccheri Giuseppe 1973- Keywords arsenopyrite pyrite invisible gold gold-antimony deposits Mossbauer spectroscopy Headings Geogr. Západné Karpaty (pohorie) Language English Country Slovak Republic systematics 55 Annotation Numerous occurrences and deposits of Sb-Au mineralization containing gold-bearing sulphides are described from an area of the Tatric Unit in Western Carpathians e.g.: Pezinok, Dúbrava, Jasenie, Nižná Boca, Vyšná Boca etc. It was shown, that arsenopyrite is the main sulphide mineral incorporating invisible gold in its crystal structure. Concentrations of invisible gold in pyrite are not as high as in arsenopyrite. Only if arsenic is present in the pyrite in amounts greater than 0.2 wt %, there is significant incorporation of Au in its crystal structure. Gold content in these sulphides ranges from zero up to n.100 ppm. The fine-grained types contain higher Au concentrations, by as much as an order of magnitude. This work has demonstrated that Au coprecipitated together with Fe, As and S during the arsenopyrite and pyrite crystallization and was incorporated in sulphide mineral crystals both as native gold and chemically bound gold. Although As and Au contents in arsenian pyrites and arsenopyrites vary from sample to sample, there is a positive correlation between Au and As. The covariance in As and Au indicate that they were transported by the same solution and that the same geochemical processes led to their removal from solution. Au is predominantly concentrated within As-rich zones of gold-bearing sulphides. Gold-bearing arsenopyrite and pyrite precipitated at the onset of the paragenetic sequence. They crystallized within a broad temperature range: 319 to 450 °C Public work category AED No. of Archival Copy 36952 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ 
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Title The invisible gold in arsenopyrite from the Sb-Au deposit Pezinok (Slovakia) Par.title Neviditeľné zlato v arzenopyrite z Sb-Au ložiska Pezinok (Slovensko) Author info Juraj Majzlan...[et al.] Author Majzlan Juraj (30%)
Co-authors Chovan Martin (25%)
Andráš Peter 1953- (25%) UMBFP04 - Katedra životného prostredia
Wiedenbeck Michael (10%)
Newville Matthew (10%)
Source document Hallesches Jahrbuch für Geowissenschaften : Band 31 : 87. Tagung der Deutschen Mineralogischen Gesellschaft vom 13. - 16. September 2009 an der Martin-Luther-Universität Halle-Wittenberg : Programm, Kurzfassungen, Exkursionen. S. 151. - Halle : Martin-Luther-Universität Halle-Wittenberg, Institut für Geowissenschaften, 2009 Keywords arzenopyrit neviditeľné zlato arsenopyrite invisible gold Headings Geogr. Pezinok (Slovensko) Language English Country Germany systematics 546 549.324.62 Public work category AFG No. of Archival Copy 13832 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ 
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