Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan

Minerals

SaltanatS. Aitbayeva¹  BorisA. D′yachkov¹  NatalyaA. Zimanovskaya¹  MarinaA. Mizernaya¹  OxanaN. Kuzmina¹  AinelY. Bissatova¹  TatianaA. Oitseva²  SergeyV. Khromykh³ 

[1] Faculty of Earth and Environmental Sciences, D. Serikbayev East Kazakhstan Technical University, 19, Serikbayev str., Ust-Kamenogorsk 070000, Kazakhstan;Geos LLP, 83, Protozanov str., Ust’-Kamenogorsk 070000, Kazakhstan;V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, 3, Koptyug ave., 630090 Novosibirsk, Russia;

关键词: gold deposit;    rare metal deposit;    mineral chemistry;    mineral microinclusion;    impurity;    mineral potential;   

DOI  :  10.3390/min11030253

来源: DOAJ

【 摘 要 】

Replenishment of mineral resources, especially gold and rare metals, is critical for progress 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, trevorite, 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, tantalite, 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 accumulated rare metals late during the evolution of the pegmatite magmatic system. The discovered mineralogical and geochemical criteria are useful for exploration purposes.

【 授权许可】

Unknown