Sphalerite
Hardness ( Moh )
" 3.5 - 4
Crystal System
CubicSpecific Gravity
4.09
Refractive Index
2.4
Birefringence
Colour(s)
Brown, yellow, red, green, black
Cleavage
Francture Type
Uneven to conchoidal
Luster
Streak
brown, pale yellow
Transparency
Transparent to translucent
Formula
(Zn,Fe)S
Country
Found In Austria,Canada,France,Germany,Ireland,Italy,Kazakhstan,Kosovo,Norway,Peru,Poland,Romania,Russia,South Africa,Spain,Switzerland,UK,USA