Daubréelite is a rare sulfide mineral. It crystallizes with cubic symmetry and has chemical composition of Fe2+Cr3+2S4. It usually occurs as black platy aggregates. ==Naming and history== Daubréelite was named after the French mineralogist, petrologist and meteoriticist Gabriel Auguste Daubrée. The mineral was first described in 1876 in the Ame... Found on http://en.wikipedia.org/wiki/Daubréelite
Dau'bree·lite noun [ From Daubrée , a French mineralogist.] (Min.) A sulphide of chromium observed in some meteoric irons. Found on http://www.encyclo.co.uk/webster/D/8