Hypertext Webster Gateway: "dufrenite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Dufrenite \Du*fren"ite\, n. [From ??ierre Armand Dufr['e]noy, a
French geologist.] (Min.)
A mineral of a blackish green color, commonly massive or in
nodules. It is a hydrous phosphate of iron.
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