:''See

Nekrasov Cossacks Nekrasov Cossacks, Nekrasovite Cossacks, Nekrasovites, Nekrasovtsy (russian: link=no, Некрасовцы, Некрасовские казаки, Казаки-некрасовцы) descend from those Don Cossacks who, after the defeat of the ...

for another meaning'' Nekrasovite is a rare copper vanadium

sulfosalt Sulfosalt minerals are sulfide minerals with the general formula , where *A represents a metal such as copper, lead, silver, iron, and rarely mercury, zinc, vanadium *B usually represents semi-metal such as arsenic, antimony, bismuth, and rarely ...

mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. ( ...

with formula . It crystallizes in the isometric system and occurs as small grains in ore aggregates. It is a brown opaque metallic mineral with

Mohs hardness The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by th ...

of 4.5 and a

specific gravity Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water (molecule), wa ...

of 4.62. It was first described in 1984 in the Khayragatsch ore deposit of eastern

Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked cou ...

and named for Russian mineralogist

Ivan Yakovlevich Nekrasov Ivan () is a Slavic male given name, connected with the variant of the Greek name (English: John) from Hebrew meaning 'God is gracious'. It is associated worldwide with Slavic countries. The earliest person known to bear the name was Bulgari ...

(born 1929).

References

Mindat data with locations

Webmineral dataMineral Data Publishing - PDF
Copper minerals Vanadium minerals Sulfosalt minerals Cubic minerals Minerals in space group 218 {{sulfide-mineral-stub