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nature : commonly known as pyrite. The ingredients of FeS2 containing S 53.4%. Often containing cobalt, nickel and gold crystal axis. Crystal Cube, or 50 cents a sustained 12 Verses, crystal surface striped; Granular or collectivity was massive. Light yellow to bronze. Green traces of black. A metallic sheen. Hardness 6 ~ 6.5. Fracture vary. Density 4.9 ~ 5.2. The crust is widely distributed, can be formed in various geologic role in the process. Endogenous mainly pyrite in hydrothermal deposits; External causes of pyrite, prolific in coal strata and rock layers, often was disseminated, were intensive who was lumpish or tuberculosis - like, disseminated, most good for Crystal Cube. This pyrite is the formation environment and reduction of organic residue decomposition of the body. Easy oxidation of pyrite from limonite, and tend to retain the original cubic crystal shape perceptions. Home pyrite in charcoal on them as it was burning blue flame, which emit sulfur dioxide gases, mainly used in the manufacture of sulfuric acid and sulfur extraction. Some deposits of gold-bearing pyrite often and cobalt, nickel, comprehensive utilization.
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