(Min.) A mineral occuring in octahedral crystals, also massive, of a reddish color. It is a silicate of iron, zinc manganese, and glucinum, containing sulphur.
danalite
danalite
[′dā·nə‚līt] (mineralogy) (Fe,Mn,Zn)4Be3(SiO4)3S A mineral consisting of a silicate and sulfide of iron and beryllium; it is isomorphous with helvite and genthelvite.