General Information:
Chemical Formula:
CaV++++4O9·5(H2O)
Composition:
(Molecular Weight = 477.92 gm)
Calcium 8.39 % Ca
Vanadium 42.64 % V
Hydrogen 2.11 % H
Oxygen 46.87 % O
Empirical Formula:
CaV4+4O9·5(H2O)
Environment:
Sedimentary U-V deposits.
Locality:
Sundown Claim, San Miguel County, Utah, USA.
Name Origin:
Named for Jack R. Simplot (1909-) of the Simplot Mining Co., Boise, Idaho, USA.
Physical Properties:
Cleavage:
[010] Perfect
Color:
greenish black, dark green, or black.
Density:
2.64
Habits:
Micaceous - Platy texture with "flexible" plates., Platy - Sheet forms (e.g. micas).,
Hardness:
1 - Talc
Luster:
Vitreous (Glassy)
Streak:
brownish black
More details...