One of the mysteries of the English language finally explained.
A titanium-containing mineral occurring as long prismatic crystals of a black or dark brown colour, typically as a constituent of pegmatites.
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Ainigmatit from ancient Greek αἴνιγμα (with reference to its originally problematic nature) + German -it.
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