“pyrite”的概念、定义、翻译、参考文献-科学参考

pyrite

Chemistry

A mineral form of iron(II) sulphide, FeS₂. Superficially it resembles gold in appearance, hence it is also known as fool’s gold, but it is harder and more brittle than gold (which may be cut with a knife). Pyrite crystallizes in the cubic system, is brass yellow in colour, has a metallic lustre, and a hardness of 6–6.5 on the Mohs scale. It is the most common and widespread of the sulphide minerals and is used as a source of sulphur for the production of sulphuric acid. Sources include the Rio Tinto mines in Spain.

Geology and Earth Sciences

A sulphide mineral, FeS₂; sp. gr. 4.9–5.2; hardness 6.0–6.5; cubic; pale brass-yellow, does not tarnish; greenish-black streak; metallic lustre; crystals cubic, pyritohedra (pentagonal dodecahedra), octahedra, or combinations of the two; cleavage poor basal {001}; occurs with other sulphide ores genetically associated with basic and ultrabasic rocks, and together with pyrrhotite and chalcopyrite; very widely distributed in a great variety of environments, and found in igneous rocks as an accessory mineral, in sedimentary rocks (especially black shales), as nodules in metamorphic rocks, and common in hydrothermal veins, in replacement deposits, and contact metamorphic rocks; alters to iron sulphate and limonite. It was formerly used widely for the production of sulphuric acid. Compare marcasite.

单词	pyrite
释义	pyrite Chemistry A mineral form of iron(II) sulphide, FeS₂. Superficially it resembles gold in appearance, hence it is also known as fool’s gold, but it is harder and more brittle than gold (which may be cut with a knife). Pyrite crystallizes in the cubic system, is brass yellow in colour, has a metallic lustre, and a hardness of 6–6.5 on the Mohs scale. It is the most common and widespread of the sulphide minerals and is used as a source of sulphur for the production of sulphuric acid. Sources include the Rio Tinto mines in Spain. Geology and Earth Sciences A sulphide mineral, FeS₂; sp. gr. 4.9–5.2; hardness 6.0–6.5; cubic; pale brass-yellow, does not tarnish; greenish-black streak; metallic lustre; crystals cubic, pyritohedra (pentagonal dodecahedra), octahedra, or combinations of the two; cleavage poor basal {001}; occurs with other sulphide ores genetically associated with basic and ultrabasic rocks, and together with pyrrhotite and chalcopyrite; very widely distributed in a great variety of environments, and found in igneous rocks as an accessory mineral, in sedimentary rocks (especially black shales), as nodules in metamorphic rocks, and common in hydrothermal veins, in replacement deposits, and contact metamorphic rocks; alters to iron sulphate and limonite. It was formerly used widely for the production of sulphuric acid. Compare marcasite.
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