danalite
noun
da·na·lite
ˈdānəˌlīt
plural -s
: a mineral (Fe,Zn,Mn)8Be8Si6O24S2 that consists of a reddish or gray silicate and sulfide of iron and beryllium usually containing also zinc and manganese and that is isomorphous with helvite and genthelvite
Word History
Etymology
James D. Dana †1895 American geologist + English -lite