General Information:
Chemical Formula:
NaFeS2·2(H2O)
Composition:
(Molecular Weight = 179.00 gm)
Sodium 12.84 % Na
Iron 31.20 % Fe
Hydrogen 2.25 % H
Sulfur 35.83 % S
Oxygen 17.88 % O
Empirical Formula:
NaFe2+S2·2(H2O)
IMA Status:
Approved IMA 1977
Locality:
Coyote Peak diatreme, 16 miles SW of Orick, Humboldt Co. California.
Physical Properties:
Cleavage:
[110] Good
Color:
copper red, red, or black.
Density:
2.3
Diaphaniety:
Opaque
Hardness:
2 - Gypsum
Luster:
Metallic
Streak:
black
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