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单词 penroseite
释义 pen·rose·ite
\ˈpenˌrōˌzīt\ noun
(-s)
Etymology: Richard A. F. Penrose died 1931 American geologist + English -ite
: a mineral (Ni,Cu,Pb)Se2 structurally like pyrite consisting of a selenide of lead, copper, and nickel and occurring in lead gray radiating columnar masses (hardness 3, specific gravity 6.9)
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