“muscovite”的概念、定义、翻译、参考文献-科学参考

muscovite

Chemistry

A mineral form of potassium aluminosilicate, K₂Al₄(Si₆Al₂)O₂₀(OH,F)₄; one of the most important members of the mica group of minerals. It is chemically complex and has a sheetlike crystal structure (see intercalation compound). It is usually silvery-grey in colour, sometimes tinted with green, brown, or pink. Muscovite is a common constituent of certain granites and pegmatites. It is also common in metamorphic and sedimentary rocks. It is widely used in industry, for example in the manufacture of electrical equipment and as a filler in roofing materials, wallpapers, and paint.

Geology and Earth Sciences

An important rock-forming mineral and member of the mica group with composition K₂Al₄[Si₃AlO₁₀]₂(OH,F)₄ (see micas); when K is replaced by Na the mineral is called paragonite and is related to the phyllosilicates (sheet silicates) lepidolite and zinnwaldite (both lithium-bearing micas); sp. gr. 2.8–2.9; hardness 2.5–3.0; monoclinic; normally colourless to very pale grey to green or light brown; vitreous to pearly lustre; crystals tabular, hexagonal, and also occur in foliated masses and disseminated flakes; cleavage basal perfect {001}; widely distributed in igneous alkali granites, in pegmatites, as a secondary mineral resulting from the decomposition of feldspars, and can be a major constituent of clastic sediments (e.g. sandstone and silts).

单词	muscovite
释义	muscovite Chemistry A mineral form of potassium aluminosilicate, K₂Al₄(Si₆Al₂)O₂₀(OH,F)₄; one of the most important members of the mica group of minerals. It is chemically complex and has a sheetlike crystal structure (see intercalation compound). It is usually silvery-grey in colour, sometimes tinted with green, brown, or pink. Muscovite is a common constituent of certain granites and pegmatites. It is also common in metamorphic and sedimentary rocks. It is widely used in industry, for example in the manufacture of electrical equipment and as a filler in roofing materials, wallpapers, and paint. Geology and Earth Sciences An important rock-forming mineral and member of the mica group with composition K₂Al₄[Si₃AlO₁₀]₂(OH,F)₄ (see micas); when K is replaced by Na the mineral is called paragonite and is related to the phyllosilicates (sheet silicates) lepidolite and zinnwaldite (both lithium-bearing micas); sp. gr. 2.8–2.9; hardness 2.5–3.0; monoclinic; normally colourless to very pale grey to green or light brown; vitreous to pearly lustre; crystals tabular, hexagonal, and also occur in foliated masses and disseminated flakes; cleavage basal perfect {001}; widely distributed in igneous alkali granites, in pegmatites, as a secondary mineral resulting from the decomposition of feldspars, and can be a major constituent of clastic sediments (e.g. sandstone and silts).
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