What is a mineral of a bluish gray color and metallic luster, usually in plumose masses, also compact. It is sulphide of antimony and lead called?
boulangerite — A mineral of a bluish gray color and metallic luster, usually in plumose masses, also compact. It is sulphide of antimony and lead. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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