See Nekrasov Cossacks for another meaning

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].