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单词 pinnoite
释义 pin·no·ite
\ˈpinəˌwīt\ noun
(-s)
Etymology: German pinnoit, from Pinno, 19th century German mining official + German -it -ite
: a hydrous magnesium borate Mg(BO2)2.3H2O usually occurring in yellow nodular masses with a radiating fibrous structure (hardness 3-4, specific gravity 2.3)
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