lawsonite

noun

law·​son·​ite

ˈlȯsᵊnˌīt

plural -s

: a pale or grayish blue mineral CaAl₂Si₂O₆(OH)₄ in prismatic orthorhombic crystals consisting of hydrous calcium aluminum silicate

Word History

Etymology

Andrew C. Lawson †1952 American geologist + English -ite

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