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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.
- Source :
- Minerals (2075-163X); Jan2024, Vol. 14 Issue 1, p85, 28p
- Publication Year :
- 2024
-
Abstract
- 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 sulfarsenides were also found: Co<subscript>0.67</subscript>Ni<subscript>0.32</subscript>Fe<subscript>0.02</subscript>S<subscript>0.19</subscript>As<subscript>2.80</subscript>, which could be a sulfur-rich skutterudite, Ni<subscript>0.85</subscript>Co<subscript>0.15</subscript>S<subscript>0.39</subscript>As<subscript>1.60</subscript>, and Ni<subscript>0.69</subscript>Co<subscript>0.31</subscript>S<subscript>0.47</subscript>As<subscript>1.52</subscript>, 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 2075163X
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Minerals (2075-163X)
- Publication Type :
- Academic Journal
- Accession number :
- 175080533
- Full Text :
- https://doi.org/10.3390/min14010085