General Information:
Chemical Formula:
(Co,Fe)As2
Composition:
(Molecular Weight = 208.00 gm)
Iron 6.71 % Fe
Cobalt 21.25 % Co
Arsenic 72.04 % As
Empirical Formula:
Co0.75Fe2+0.25As2
Locality:
SOUT
Name Origin:
From the German Safflor - "dyer's saffron."
Physical Properties:
Cleavage:
[010] Imperfect
Color:
gray, dark gray, or tin white.
Density:
6.9 - 7.3, Average = 7.1
Diaphaniety:
Opaque
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Massive - Granular - Common texture observed in granite and other igneous rock.,
Hardness:
4-5 - Fluorite-Apatite
Luminescence:
None.
Luster:
Metallic
Streak:
grayish black
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