melanocerite

noun

mel·​a·​no·​cerite

¦melənō+

plural -s

: a mineral consisting of a complex silicate, borate, tantalate, fluoride, or other compound of cerium, yttrium, calcium, and other metals and occurring in brown or black rhombohedral crystals

Word History

Etymology

German melanozerit, from melan- + zerit cerite

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