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or et pyrite.
Pyrite is a common mineral (also among the frequent natural sulphides and the most common disulfide) found in a wide range of geological formations, including sedimentary layers, hydrothermal veins, and metamorphic rocks. Pyrite's brassy-yellow metallic colour has made many people mistake it for gold, earning it the nickname the …
Arsenic-bearing pyrite, known as arsenian pyrite, is widespread in low-temperature hydrothermal environments, especially sedimentary basins and mineral deposits ( Wells and Mullens, 1973, MacLean and Fleet, 1989, Cook and Chryssoulis, 1990, Richards and Kerrich, 1993, Savage et al., 2000, Kolker et al., 2003 ).
The pyrite structure is derived from the NaCl structure with Fe in the Na position in a face-centered array while the Cl ion position is replaced by the disulfide ion, with the orientation of the S-S bond aligned with the body diagonal of the cell, but such that the symmetry is lowered from Fm3m to Pa3 (Fig. 1).
Pyrite is harder than glass or most metals, is very brittle and often occurs as cubes or octahedrons with faint striations or lines on some crystal faces. Marcasite: A polymorph of pyrite, marcasite shares many of pyrite s properties, including its hardness. Marcasite typically has a paler color than pyrite, and tends to have a radiating ...
1. Introduction. Pyrite (FeS 2, iron disulfide), is the most abundant sulfide mineral and commonly associated with valuable minerals such as sphalerite, chalcopyrite, galena, gold as well as coal (Wang and Forssberg, 1991, Wang, 1995, Dimitrijevic et al., 1996, Jiang et al., 1998).Pyrite has very low economic significance and is usually …
The pyrite morphologies in the hydrothermal gold deposits from the Jiaodong Peninsula has a close relationship with the gold enrichment (Chen et al., 1987; Xue et al., 2018; Chai et al., 2019). The pyrite morphologies are restricted by the physicochemical conditions of the ore-forming fluids ( Murowchick and Barnes, 1987 ; Cai and Zhou, 1993 ...
Sulfur isotopes of pyrite have also been explored within both modern and ancient hydrothermal vent environments from a range of tectonic settings. δ 34 S values of 0 to +6‰ are typical for sulfide minerals from non-sedimented, Phanerozoic hydrothermal vents (Franklin et al., 2005; Huston, 1999; Seal, 2006 ). δ 34 S values for sulfides in …
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