Nekrasovite

See Nekrasov Cossacks for another meaning

Nekrasovite
General
Category	Mineral
Formula (repeating unit)	Cu26V2(Sn,As,Sb)6S32
Identification
Color	Brown
Mohs scale hardness	4.5
Diaphaneity	Opaque
Specific gravity	4.62

Nekrasovite is a rare copper vanadium sulfosalt mineral with formula Cu₂₆V₂(Sn,As,Sb)₆S₃₂. It crystallizes in the isometric system and occurs as small grains in ore aggregates. It is a brown opaque metallic mineral with Mohs hardness of 4.5 and a specific gravity of 4.62.

It was first described in 1984 in the Kayragach (Qayragʻoch) Au-Te ore deposit,[1] Ohangaron District, Tashkent Region, eastern Uzbekistan and named for Russian mineralogist Ivan Yakovlevich Nekrasov [ru].

References

1. Kairagach Au deposit, Ohangaron District, Tashkent Region, Uzbekistan

External links

• Mindat data with locations
• Webmineral data
• Mineral Data Publishing - PDF