deweylite

\\-ˌlīt\ noun (-s)

Etymology: Chester Dewey died 1867 American clergyman and scientist + English -lite

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

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deweylite Min.

(ˈdjuːɪlaɪt)

[Named 1826 after Prof. Dewey, U.S. see -lite.]

An amorphous resinous-looking mineral of yellowish colour, consisting of a hydrated silicate of magnesium.

Emmons Min. 133. Dana Min. 470.