TY - JOUR

T1 - Peculiarities of the chemical composition of spinel group minerals in the talnakh copper-nickel ore deposit (north-west of the Siberian platform)

AU - Aplonov, V. S.

AU - Zolotarev, A. A.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - There are generalized data of the representative collection of chemical analyses of spinel group minerals from various rocks of the Talnakh deposit (in total - 240 microprobe analyses). Data on composition of spinelids from rocks of Zubovskoe (4 analyses) and Norilsk-1 (53 analyses) deposits have been used also. Spinel group minerals in igneous rocks and the metamorphic halo of the Talnakh deposit belong to five mineral species: magnetite, chromite, magnesiochromite, spinel and hercynite. Magnesioferrite, maghemite and titanomaghemite may be present in the ore field rocks also: some chemical analyses in the studied collection might be recalculated in chemical formulas of these mineral species. Ulvospinel was identified in rocks of Norilsk-I and Zubovskoe deposits. Despite the diversity of spinel group minerals, variations of their compositions are described by only three schemes of isomorphism: Mg ↔ Fe 2+ ; Al ↔ Fe 3+ ↔ Cr; Fe 3+VI + Fe 3+IV ↔ Ti 4+VI + Fe 2+IV . The role of other elements - Si, Ni, Co, Mn, Ca, Na, K, Zn, V - is insignificant.

AB - There are generalized data of the representative collection of chemical analyses of spinel group minerals from various rocks of the Talnakh deposit (in total - 240 microprobe analyses). Data on composition of spinelids from rocks of Zubovskoe (4 analyses) and Norilsk-1 (53 analyses) deposits have been used also. Spinel group minerals in igneous rocks and the metamorphic halo of the Talnakh deposit belong to five mineral species: magnetite, chromite, magnesiochromite, spinel and hercynite. Magnesioferrite, maghemite and titanomaghemite may be present in the ore field rocks also: some chemical analyses in the studied collection might be recalculated in chemical formulas of these mineral species. Ulvospinel was identified in rocks of Norilsk-I and Zubovskoe deposits. Despite the diversity of spinel group minerals, variations of their compositions are described by only three schemes of isomorphism: Mg ↔ Fe 2+ ; Al ↔ Fe 3+ ↔ Cr; Fe 3+VI + Fe 3+IV ↔ Ti 4+VI + Fe 2+IV . The role of other elements - Si, Ni, Co, Mn, Ca, Na, K, Zn, V - is insignificant.

KW - Chemical composition

KW - Spinel group

KW - Talnakh deposit

UR - http://www.scopus.com/inward/record.url?scp=85063747189&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85063747189

VL - 146

SP - 51

EP - 69

JO - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА

JF - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА

SN - 0869-6055

IS - 3

ER -