pinakiolite

noun

pi·​nak·​i·​o·​lite

pə̇ˈnakēəˌlīt

plural -s

: a magnesium and manganese borate Mg₃Mn₃B₂O₁₀ occurring in small black tabular crystals

Word History

Etymology

German pinakiolith, from Greek pinakion small tablet (diminutive of pinak-, pinax board, tablet) + German -lith -lite

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