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单词 prehnite
释义 prehn·ite
\ˈprāˌnīt, ˈpreˌ-\ noun
(-s)
Etymology: German prehnit, from Col. Van Prehn 18th century Dutch officer who brought it from the Cape of Good Hope + German -it -ite (I)
: a pale green mineral Ca2Al2Si3O10(OH)2 that occurs in crystalline aggregates having a botryoidal or mamillary structure but only rarely in distinct crystals and that is a basic calcium aluminum silicate (hardness 6-6.5, specific gravity 2.80-2.95)
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更新时间:2025/7/24 13:30:20