General Information:
Chemical Formula:
Se
Composition:
(Molecular Weight = 78.96 gm)
Selenium 100.0 % Se
Empirical Formula:
Se
Name Origin:
From the Greek, Selene, "goddess of the Moon."
Physical Properties:
Cleavage:
[0112] Good
Color:
gray, purple gray, or reddish.
Density:
4.81
Diaphaniety:
Opaque
Habits:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Disseminated - Occurs in small, distinct particles dispersed in matrix.
Hardness:
2 - Gypsum
Luster:
Sub Metallic
Streak:
red
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