noun coop·er·ite \ˈküpəˌrīt\

Definition of cooperite



  1. :  a steel-gray mineral PtS of metallic luster consisting of a sulfide of platinum belonging to the tetragonal system and occurring usually in irregular grains

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Origin and Etymology of cooperite

R. A. Cooper, flourished about 1920, who first described it + English -ite

Seen and Heard

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a brief usually trivial fact

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