·It follows from this brief overview that a deeper understanding of the gold pyrite arsenic relationships in hydrothermal systems awaits experimental studies at pertinent laboratory controlled conditions coupled with Au selective in situ spectroscopic techniques TIMA we consider that tellurium bismuth minerals are closely associated
·Pyrite the most abundant sulfide on Earth and a common component of gold deposits can be a significant host for refractory gold This is the first documentation of pore attached composite Autelluride nanoparticles in arsenic free pyrite Trace elements mapping in pyrite from an intrusionhosted Au deposit with orogenic overprint Dongping
·The Kochbulak gold deposit is situated on the northern slope of the Kurama range of eastern Uzbekistan and is one of the largest Tellurium rich epithermal gold deposits in the world Based on a detailed field and petrological investigation three stages of mineralization can be classified including from early to late quartz pyrite vein stage
6 ·The Sanhetun tellurium gold Te Au deposit located in the Duobaoshan polymetallic metallogenic belt DPMB within the eastern section of the Central Asian Orogenic Belt CAOB is a newly discovered small scale gold deposit The mineralization with a resource of ≥4 t Au is mainly hosted in three NNE trending alteration zones
·tellurium in solid solution in 13 Secondary ion mass spectroscopy analyses have lower detection limits 100s of ppb and use smaller micro gold content of pyrite which exhibits the same textural variants as those observed in the Emperor deposit could be a signifi cant contributor
·Previously the author s research team obtained tellurium gold silver mixed concentrates from tellurium type gold ores typical of the Xiaoqinling area by flotation and obtained tellurium gold The main components of the ore sample are pyrite galena pyrrhotite and muscovite TABLE 1 TABLE 1 Chemical analysis results of major
·Concentrations of Co up to ∼ wt%; highest observed in any reported ore forming system and Ni up to 1 wt% overlap with pyrite from mafic ultramafic platinum group element PGE deposits
·Pyrite the most abundant sulfide on Earth and a common component of gold deposits can be a significant host for refractory gold This is the first documentation of pore attached composite Au
·A new kind of invisible gold in pyrite hosted in deformation related dislocations Geology 49 1225 1229 2021 Zhang H et al Effects of arsenic on the distribution and mode of occurrence of gold during fluid pyrite interaction A case study of pyrite from the Qiucun gold deposit China American Mineralogist 107 914 929 2022
·¶The epithermal low sulfidation Emperor gold telluride deposit in Fiji hosted by Late Miocene Early Pliocene shoshonitic rocks is spatially related to a low grade porphyry Cu system on the western flank of the Tavua Caldera Gold is largely in the form of invisible gold in arsenian pyrite but 10 to 50% of gold is in the form of precious metal
·The distal pyrite is enriched in several trace metals including gold silver tellurium antimony while the magnetite zone pyrite are depleted in these same elements
Tellurium was discovered in a gold ore from the mines in Zlatna near present day Sibiu Transylvania The ore was known as "Faczebajer weißes blättriges Golderz" white leafy gold ore from Faczebaja or antimonalischer Goldkies antimonic gold pyrite In 1782 while serving as the Austrian chief inspector of mines in Transylvania Franz
·It was well known that gold was commonly associated with tellurium minerals The cooccurrence of tellurium with noble metals such as gold and silver was attributed to the semi metallic nature of tellurium The composition varied significantly from different tellurium minerals For instance gold telluride ores could be classified into six
The Sanhetun tellurium gold Te Au deposit located in the Duobaoshan polymetallic metallogenic belt DPMB within the eastern section of the Central Asian Orogenic Belt CAOB is a newly discovered small scale gold deposit The mineralization with a resource of ≥4 t Au is mainly hosted in three NNE trending alteration zones between Early
·Associations of gold and tellurium are well known in some orogenic gold districts Ashanti; Bowell et al 1990 where there is little evidence of a magmatic fluid input so in these cases Te may be sourced from metasedimentary or metaigneous units or simply strongly concentrated on precipitation by specific physicochemical gradients in
·The host succession includes carbonaceous pyritic shales pelites which were a source of trace elements including gold and tellurium LA ICP MS mapping of pyrite crystals shows that late stages
·Pyrite is the major gold bearing mineral and microprobe data from 11 pyrite samples show average Au contents of With decreasing fO 2 and at reducing conditions gold and tellurium were precipitated The Au precipitation was associated with high pH and fO 2 in the early stage
·The literature on Au bearing pyrite over the four last decades is full of discussions about the chemical and redox state of invisible gold Based on a variety of analytical techniques such as scanning electron microscopy SEM high resolution transmission electron microscopy HRTEM secondary ion mass spectrometry SIMS
·Minerals 2020 10 339 2 of 21 solution As known as arsenian pyrite [9 10] Arsenic can substitute into either the Fe site or the S site in pyrite and a maximum of 8% 11% As has been reported
·Mainly he was working with gold ores from Kleinschlatten today Zlatna Romania Müller described the samples as Faczebajer weißes blättriges Golderz —white leafy gold ore from Faczebaja—or antimonalischer Goldkies—antimonic gold pyrite One of Müller s duties involved quantifying and determining the composition of the ores
Summary¶The epithermal low sulfidation Emperor gold telluride deposit in Fiji hosted by Late Miocene Early Pliocene shoshonitic rocks is spatially related to a low grade porphyry Cu system on the western flank of the Tavua Caldera Gold is largely in the form of invisible gold in arsenian pyrite but 10 to 50% of gold is in the form of precious metal tellurides
·Tellurium contents in pyrite increase from pure pyrite up to 220 ppm to low As pyrite up to wt % but with a decrease towards high As pyrite up to 185 ppm
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