thortveitite

noun

thort·​veit·​ite

(ˈ)tȯ(r)t¦vīˌtīt,

(ˈ)thȯ-

plural -s

: a mineral (Sc,Y)₂Si₂O₇ consisting of scandium yttrium silicate and occurring in slender grayish-green orthorhombic crystals (hardness 6–7, specific gravity 3.6)

Word History

Etymology

German thortveitit, from Olaus Thortveit, 20th century Norwegian mineralogist + German -it -ite

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