General Information:
Chemical Formula:
CaFe++V+++++4W++++++8O36·12(H2O)
Composition:
(Molecular Weight = 2,562.65 gm)
Calcium 1.56 % Ca
Vanadium 7.95 % V
Iron 2.18 % Fe
Hydrogen 0.94 % H
Tungsten 57.39 % W
Oxygen 29.97 % O
Empirical Formula:
CaFe2+V5+4W8O36·12(H2O)
IMA Status:
Approved IMA 1984
Physical Properties:
Cleavage:
[100] Perfect, [010] Perfect
Color:
brownish yellow or dark brown.
Density:
4.5
Hardness:
2.5 - Finger Nail
Luster:
Adamantine - Greasy
Streak:
light brown
More details...