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单词 franckeite
释义 franck·e·ite
\ˈfräŋkəˌīt\ noun
(-s)
Etymology: German franckeït, from Carl and Ernest Francke, 19th century German mining engineers + German -it -ite
: a mineral consisting of a dark gray or black massive lead antimony tin sulfide (sp. gr. 5.55)
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