ˈhelˌvīt noun
also hel·vin -_və̇n ; or hel·vine “, -ˌvēn
( -s )
Etymology: helvite alteration (influenced by -ite ) of helvin; helvin, helvine from German helvin, from Latin helvus light-bay-colored + German -in — more at yellow
: a silicate mineral (Mn,Fe,Zn) 8 Be 6 O 24 S 2 consisting of sulfide of manganese and beryllium and usually containing also iron and zinc that is isomorphous with danalite and genthelvite