German

Noun

Bertrandite m

1. plural of Bertrandit

English

Bertrandite

Noun

bertrandite ‎(uncountable)

1. (mineralogy) A basic beryllium sorosilicate that is an ore of beryllium.

1. ↑ Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: Dana's new mineralogy, John Wiley & Sons, 1997

French

Noun

bertrandite f ‎(plural bertrandites)

1. (mineralogy) bertrandite