deweylite

noun

dew·​ey·​lite

-ˌlīt

plural -s

: a mineral Mg₃Si₂O₅(OH)₄ occurring as a hydrous amorphous resinous magnesium silicate (hardness 2–3.5, specific gravity 2.0–2.2)

Word History

Etymology

Chester Dewey †1867 American clergyman and scientist + English -lite

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