General Information:
Chemical Formula:
Cu5(VO4)2(OH)4
Composition:
(Molecular Weight = 615.64 gm)
Vanadium 16.55 % V
Copper 51.61 % Cu
Hydrogen 0.65 % H
Oxygen 31.19 % O
Empirical Formula:
Cu5(VO4)2(OH)4
Environment:
Found with V and U minerals in cavities in limestone.
Locality:
Tyuya Nuyun, Ferghana, Turan Region, Uzbekistan.
Name Origin:
Named from the locality.
Physical Properties:
Color:
olive green.
Diaphaniety:
Translucent
Habits:
Reniform - "Kidney like" in shape (e.g.. hematite)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Aggregates - Made of numerous individual crystals or clusters.
Hardness:
5 - Apatite
More details...