anthraconite

== English == === Etymology === From Ancient Greek ἄνθραξ (ánthrax) +‎ Ancient Greek κόνις (kónis) +‎ -ite. By surface analysis, anthra- +‎ conite. === Noun === anthraconite (plural anthraconites) (mineralogy) A coal-black variety of calcite or dolomite, usually emitting a foetid smell when rubbed. ==== Synonyms ==== stinkstone swinestone === References === “anthraconite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026. “anthraconite”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.