General Information:
Chemical Formula:
(Zn,Fe)S
Composition:
(Molecular Weight = 97.46 gm)
Zinc 67.10 % Zn
Sulfur 32.90 % S
Empirical Formula:
ZnS
Name Origin:
Named after the French chemist, Ch. A. Wurtze (1817-1884).
Physical Properties:
Cleavage:
[1010] Good, [0001] Good
Color:
brownish black, orange brown, reddish brown, or black.
Density:
3.98 - 4.08, Average = 4.03
Diaphaniety:
Translucent
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Tabular - Form dimensions are thin in one direction., Colloform - Forming from a gel or colloi dal mass.
Hardness:
3.5-4 - Copper Penny-Flourite
Luminescence:
None.
Luster:
Adamantine - Resinous
Streak:
light brown
More details...