英语词汇“pyrochroite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

pyrochroite

/ˌpʌɪrə(ʊ)ˈkrəʊʌɪt/

Mineralogy

noun

A manganese-containing mineral which occurs in hydrothermal vein deposits, often as pale greenish or bluish crystals in foliated masses which darken on exposure.

Pyrochroite is manganese (ii) hydroxide, Mn(OH)₂; the manganese analogue of brucite. Crystal system: trigonal..

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Pyrochroit from pyro- + ancient Greek χροιά colour + German -it, so called because it becomes coloured when heated.

单词	pyrochroite
释义	pyrochroite /ˌpʌɪrə(ʊ)ˈkrəʊʌɪt/ Mineralogy noun A manganese-containing mineral which occurs in hydrothermal vein deposits, often as pale greenish or bluish crystals in foliated masses which darken on exposure. Pyrochroite is manganese (ii) hydroxide, Mn(OH)₂; the manganese analogue of brucite. Crystal system: trigonal.. Origin Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Pyrochroit from pyro- + ancient Greek χροιά colour + German -it, so called because it becomes coloured when heated.
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