'Torbernite' definitions:

Definition of 'Torbernite'

From: GCIDE

Torbernite \Tor"bern*ite\, n. [So named after Torber Bergmann, a Swedish chemist.] (Min.) A mineral occurring in emerald-green tabular crystals having a micaceous structure. It is a hydrous phosphate of uranium and copper. Called also copper uranite, and chalcolite. [1913 Webster]