thuringite

noun

thu·​rin·​gite

th(y)əˈrinˌjīt

plural -s

: a mineral Fe₃(Si,Al)₂O₅(OH)₄ of the chlorite family consisting of a basic aluminum iron silicate and occurring as an aggregation of minute scales with an olive-green color and pearly luster

Word History

Etymology

German thuringit, from Thuringia + German -it -ite

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