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From Ancient Greek ἄνθραξ (ánthrax) + Ancient Greek κόνις (kónis) + -ite. By surface analysis, anthra- + conite.
Etymology from Wiktionary, CC BY-SA 4.0.
anthraconite
Today it means: A coal-black variety of calcite or dolomite, usually emitting a foetid smell when rubbed. Full definition →