General Information:
Chemical Formula:
Hydrous vanadate of Ni and Zn
Composition:
(Molecular Weight = 196.67 gm)
Vanadium 25.90 % V
Zinc 24.94 % Zn
Nickel 7.46 % Ni
Hydrogen 1.03 % H
Oxygen 40.68 % O
Empirical Formula:
Zn0.75Ni0.25(VO4)·(H2O)
Environment:
In quartz schists and carbonaceous slates. An inadequately described mineral.
Locality:
Kara-Chagyr and Uch-Kurgan, Ferghana, Turkestan.
Name Origin:
Named for Lev S. Kolovrat-Chervinsky (1884-1921), a Russian physicist.
Physical Properties:
Cleavage:
[???] Indistinct
Color:
greenish yellow or yellow.
Diaphaniety:
Transparent
Habits:
Encrustations - Forms crust-like aggregates on matrix., Botryoidal - "Grape-like" rounded forms (e.g.. malachite)., Fibrous - Crystals made up of fibers.
Hardness:
2-3 - Gypsum-Calcite
Luster:
Vitreous (Glassy)
Streak:
light yellow
More details...