'Dufrenite' definitions:

Definition of 'Dufrenite'

From: GCIDE

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. [1913 Webster]