helvite
noun
hel·vite
ˈhelˌvīt
variants or less commonly helvin or helvine
-və̇n
",
-ˌvēn
plural -s
: a silicate mineral (Mn,Fe,Zn)8Be6O24S2 consisting of sulfide of manganese and beryllium and usually containing also iron and zinc that is isomorphous with danalite and genthelvite
Word History
Etymology
helvite alteration (influenced by -ite) of helvin; helvin, helvine from German helvin, from Latin helvus light-bay-colored + German -in