Invisible Gold and Tellurium in Arsenic-Rich Pyrite from the …
Gold is found in three different forms in the Emperor gold deposit: as "invisible" or submicrometer-size inclusions of gold in arsenian pyrite, as visible native gold and/or electrum, and as tellurides (calaverite, krennerite, sylvanite, and petzite).
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Invisible Gold and Tellurium in Arsenic-Rich Pyrite from the …
Gold is found in three different forms in the Emperor gold deposit: as "invisible" or submicrometer-size inclusions of gold in arsenian pyrite, as visible native gold and/or electrum, …
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Gold-telluride nanoparticles revealed in arsenic-free pyrite
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-telluride nanoparticles in "arsenic-free" pyrite.
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Between defects and inclusions: the fate of tellurium in pyrite
We have established/refined three crucial mechanisms for Te incorporation into pyrite: (1) Tellurium in solid-solution, that significantly exceeds previously proposed solubility …
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Ore‐forming physicochemical conditions of tellurium–gold …
In gold‐polymetallic sulfide stage, Au formed within pyrite and As‐bearing pyrite in the form of invisible gold, whereas in the gold‐telluride stage, Au occurs as visible gold, such …
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Anomalous tellurium enrichment associated with gold …
Three pyrite generations and seven species of tellurides were identified in the Yongxin Te-Au deposit. Te-Au mineralization is closely related to the Py3. Fluid mixing and …
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Processing technologies for gold-telluride ores
Usually, gold telluride ores appear to be refractory as they are always as-sociate with pyrite and other sulfides. This would 'lock' the gold and give rise to elevated cyanide consumption. For …
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The gold-telluride connection: Evidence for multiple fluid …
Magnetite was formed and oxidized sulfur to sulfate ions, subsequently resulting in the formation of barite. This sequence indicates that tellurides were coeval with native gold, pyrite, magnetite, and barite. The mixing of meteoric water may have also contributed to an increase in the oxygen fugacity of the original fluids.
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Gold-telluride nanoparticles revealed in arsenic-free pyrite
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 …
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Genesis of the Sanhetun Tellurium–Gold Deposit, …
Tellurides are widespread in Py3 and Py4, consisting mainly of native tellurium, tetradymite, tsumoite, hessite, and petzite. Especially, tetradymite commonly coexists with native gold. This study highlights the role …
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(PDF) Tellurium and Gold enrichment aided by melts and pyrite …
MS element mapping of pyrite show that tellurium commonly occurs along the grain boundaries of P y3, which demonstrate that the precipitation of Te is closely related to crystallization of P y3.
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Between defects and inclusions: the fate of tellurium in pyrite
We have established/refined three crucial mechanisms for Te incorporation into pyrite: (1) Tellurium in solid-solution, that significantly exceeds previously proposed solubility limits. (2) Nano-telluride inclusions formed by intra-grain …
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Ore‐forming physicochemical conditions of tellurium–gold …
In gold‐polymetallic sulfide stage, Au formed within pyrite and As‐bearing pyrite in the form of invisible gold, whereas in the gold‐telluride stage, Au occurs as visible gold, such as native gold, electrum, calaverite, and petzite.
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The gold-telluride connection: Evidence for multiple fluid …
Magnetite was formed and oxidized sulfur to sulfate ions, subsequently resulting in the formation of barite. This sequence indicates that tellurides were coeval with native gold, …
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Anomalous tellurium enrichment associated with gold …
Three pyrite generations and seven species of tellurides were identified in the Yongxin Te-Au deposit. Te-Au mineralization is closely related to the Py3. Fluid mixing and fluid-rock interaction triggered the precipitation of Te-Au in the Yongxin Te-Au deposit.
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Tellurium and gold enrichment aided by melts and pyrite …
Three pyrite generations of different trace element contents identified in the Yongxin gold deposit. Te-Au mineralization is closely related to the Py3. Te-Bi-rich melts, as gold scavenger, play a critical role in governing gold distribution patterns and …
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Processing technologies for gold-telluride ores
Usually, gold telluride ores appear to be refractory as they are always as-sociate with pyrite and other sulfides. This would 'lock' the gold and give rise to elevated cyanide consumption. For this reason, oxidative pre-treatments are generally conducted to improve gold recoveries. Table 1.
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Genesis of the Sanhetun Tellurium–Gold Deposit, Northeast …
Tellurides are widespread in Py3 and Py4, consisting mainly of native tellurium, tetradymite, tsumoite, hessite, and petzite. Especially, tetradymite commonly coexists with native gold. This study highlights the role of Te–Bi–S melt as an important gold scavenger in As-deficient ore-forming fluids. 1. Introduction.
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(PDF) Tellurium and Gold enrichment aided by …
MS element mapping of pyrite show that tellurium commonly occurs along the grain boundaries of P y3, which demonstrate that the precipitation of Te is closely related to crystallization of P y3.
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