Mineral chemistry and phase relations of Co–Ni arsenides and sulfarsenides from the Baycheh-Bagh deposit, Zanjan province, Iran

Rezazadeh, Sayeh; Hosseinzadeh, Mahnaz; Raith, Johann; Moayyed, Mohsen

doi:10.1016/j.oregeorev.2020.103836

Cited by 8 publications

(1 citation statement)

References 43 publications

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“…Arsenides and sulfarsenides of the Fe-Co-Ni-As-S system form a diverse group of ore minerals that are commonly found in magmatic sulfide (i.e., genetically directly related to igneous processes) and hydrothermal vein deposits (i.e., genetically may or may not be related to igneous processes) worldwide, e.g., [1][2][3][4][5][6][7]. Minerals of this system have been studied in synthetic samples to natural occurrences for several decades, e.g., [5,[8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Mineralization and Mineral Chemistry of Arsenides and Sulfarsenides in the Fe-Co-Ni-As-S System and Introduction of Three Unique Minerals, Port Radium Deposit, Canada

Somarin,

Zhou,

Zheng

et al. 2024

Minerals

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The Port Radium U-Cu-Ni-Co-Ag deposit in northwestern Canada is hosted within a mineral system that has generated a variety of mineralization styles from iron oxide-copper-gold to iron oxide-apatite, porphyry, skarn, and epithermal. Their genesis is linked to an extensive subduction-related magmatism that formed widespread dacite-rhyodacite-andesite volcanic and volcanoclastic sequences (~1.87 Ga), which have been intruded by their equivalent intrusive plutons. Pervasive and intensive hydrothermal alterations, including albitic, magnetite-actinolite-apatite, potassic ± albitic, phyllic, and propylitic occurred before the main sulfide, sulfarsenide, and uraninite vein-type mineralization. Although scarce sulfide minerals formed at the beginning of the hydrothermal activity, the main polymetallic arsenide-sulfarsenide-sulfide ± uraninite vein-type mineralization occurred during the epithermal stage. In addition to the common arsenides and sulfarsenides including nickeline, cobaltite, rammelsbergite, safflorite, skutterudite, gersdorffite, and arsenopyrite, three unique and potential new sulfarsenides were also found: Co0.67Ni0.32Fe0.02S0.19As2.80, which could be a sulfur-rich skutterudite, Ni0.85Co0.15S0.39As1.60, and Ni0.69Co0.31S0.47As1.52, which are chemically comparable to the Port Radium rammelsbergite with substantial addition of S and Co; they could be the solid solution product of gersdorffite-cobaltite or safflorite-rammelsbergite.

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