TY - JOUR

T1 - Mineralogical tracers of gold and rare-metal mineralization in Eastern Kazakhstan

AU - D′yachkov, Boris A.

AU - Bissatova, Ainel Y.

AU - Mizernaya, Marina A.

AU - Khromykh, Sergey V.

AU - Oitseva, Tatiana A.

AU - Kuzmina, Oxana N.

AU - Zimanovskaya, Natalya A.

AU - Aitbayeva, Saltanat S.

N1 - Funding Information: The research was additionally funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP08856325). The research was carried out on a government assignment to the V.S. Sobolev Institute of Geology and Mineralogy (Novosibirsk). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/3

Y1 - 2021/3

N2 - Replenishment of mineral resources, especially gold and rare metals, is critical for pro-gress in the mining and metallurgical industry of Eastern Kazakhstan. To substantiate the scientific background for mineral exploration, we study microinclusions in minerals from gold and rare-metal fields, as well as trace-element patterns in ores and their hosts that may mark gold and rare-metal mineralization. The revealed compositions of gold-bearing sulfide ores and a number of typical minerals (magnetite, goethite, arsenopyrite, antimonite, gold and silver) and elements (Fe, Mn, Cu, Pb, Zn, As, and Sb) can serve as exploration guides. The analyzed samples contain rare micrometer lead (alamosite, kentrolite, melanotekite, cotunnite) and nickel (bunsenite, tre-vorite, gersdorffite) phases and accessory cassiterite, wolframite, scheelite, and microlite. The ores bear native gold (with Ag and Pt impurities) amenable to concentration by gravity and flotation methods. Multistage rare-metal pegmatite mineralization can be predicted from the presence of mineral assemblages including cleavelandite, muscovite, lepidolite, spodumene, pollucite, tanta-lite, microlite, etc. and such elements as Ta, Nb, Be, Li, Cs, and Sn. Pegmatite veins bear diverse Ta minerals (columbite, tantalite-columbite, manganotantalite, ixiolite, and microlite) that accumulat-ed rare metals late during the evolution of the pegmatite magmatic system. The discovered mineralogical and geochemical criteria are useful for exploration purposes.

AB - Replenishment of mineral resources, especially gold and rare metals, is critical for pro-gress in the mining and metallurgical industry of Eastern Kazakhstan. To substantiate the scientific background for mineral exploration, we study microinclusions in minerals from gold and rare-metal fields, as well as trace-element patterns in ores and their hosts that may mark gold and rare-metal mineralization. The revealed compositions of gold-bearing sulfide ores and a number of typical minerals (magnetite, goethite, arsenopyrite, antimonite, gold and silver) and elements (Fe, Mn, Cu, Pb, Zn, As, and Sb) can serve as exploration guides. The analyzed samples contain rare micrometer lead (alamosite, kentrolite, melanotekite, cotunnite) and nickel (bunsenite, tre-vorite, gersdorffite) phases and accessory cassiterite, wolframite, scheelite, and microlite. The ores bear native gold (with Ag and Pt impurities) amenable to concentration by gravity and flotation methods. Multistage rare-metal pegmatite mineralization can be predicted from the presence of mineral assemblages including cleavelandite, muscovite, lepidolite, spodumene, pollucite, tanta-lite, microlite, etc. and such elements as Ta, Nb, Be, Li, Cs, and Sn. Pegmatite veins bear diverse Ta minerals (columbite, tantalite-columbite, manganotantalite, ixiolite, and microlite) that accumulat-ed rare metals late during the evolution of the pegmatite magmatic system. The discovered mineralogical and geochemical criteria are useful for exploration purposes.

KW - Eastern Kazakhstan

KW - Gold deposit

KW - Impurity

KW - Mineral chemistry

KW - Mineral microinclusion

KW - Mineral potential

KW - Rare metal deposit

UR - http://www.scopus.com/inward/record.url?scp=85101704524&partnerID=8YFLogxK

U2 - 10.3390/min11030253

DO - 10.3390/min11030253

M3 - Article

AN - SCOPUS:85101704524

VL - 11

SP - 1

EP - 23

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 3

M1 - 253

ER -