Alvanite

Alvanite (IMA symbol: Alv^[1]) is a zinc nickel aluminium vanadate mineral with the chemical formula (Zn,Ni)Al₄(V⁵⁺O₃)₂(OH)₁₂·2H₂O. It was originally discovered in the Karatau Mountains.^[2]

Alvanite
Alvanite found at its type locality
General
Category	Minerals
Formula	(Zn,Ni)Al4(V5+O3)2(OH)12·2H2O
IMA symbol	Alv
Identification
Color	Pale bluish green to bluish black
Fracture	Micaceous
Mohs scale hardness	3-3.5
Luster	Vitreous, Pearly
Streak	White
Diaphaneity	Translucent
Specific gravity	2.49