plural -s
: 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)

Word History


Richard A. F. Penrose †1931 American geologist + English -ite

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Dictionary Entries Near penroseite

Cite this Entry

“Penroseite.” Dictionary, Merriam-Webster, Accessed 27 May. 2024.

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