General Information:
Chemical Formula:
Na4Mg(V10O28)·24(H2O)
Composition:
(Molecular Weight = 1,506.03 gm)
Sodium 6.11 % Na
Magnesium 1.61 % Mg
Vanadium 33.83 % V
Hydrogen 3.21 % H
Oxygen 55.24 % O
Empirical Formula:
Na4MgV4+10O28·24(H2O)
Environment:
Granular coatings on sandstone.
IMA Status:
Approved IMA 1966
Locality:
Huemul mine, Mendoza Province, Argentina.
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
[???] Perfect
Color:
yellow, yellow orange, or red orange.
Density:
2.39
Habits:
Encrustations - Forms crust-like aggregates on matrix., ,
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Vitreous - Dull
Streak:
yellow
More details...