Abstract
Spatial-genetic relation of a polycomponent ore mineralization (Au, Ag, PGE, Cu, Pb, Zn, Ni) with dynamometamorphic complex, formed by the picrite-komatiite-tholeiite series rocks of Kelyana-Irokinda greenstone belt, is identified. Productivity of various ore mineralization morphostructural types (quartz-vein, zones of veining and sulfide dissemination) differing in mineral composition and content of useful components is considered. It is shown that the main industrial value is represented by veined and disseminated ores with relatively poor useful components content, but at the same time forming large-capacity ore zones. The occurrence extent, localization conditions and ore zones hyperthetical resources are favorable for the production of economically cost-effective open pit (quarry) mining operations. An effective sampling method is recommended to carry out the prospect and exploration of large-capacity deposits on the Yubileyny field and other similar to its Transbaikalia ore objects.
Highlights
An effective sampling method is recommended to carry out the prospect and exploration of large-capacity deposits on the Yubileyny field and other similar to its Transbaikalia ore objects
Prospecting and exploration works on the area of the Yubileyny ore field were widely carried out by production organizations (Irkutskgeology, “Agrodorspetsstroy” company) in the 60 - 90 years of the last century
Ore mineralization of sulfide disseminated zones is mainly represented by pyrite, but pyrrhotite, chalcopyrite, sphalerite, Galena, magnetite, marcasite, rutile, native gold there are in subordinate amounts
Summary
Prospecting and exploration works on the area of the Yubileyny ore field were widely carried out by production organizations (Irkutskgeology, “Agrodorspetsstroy” company) in the 60 - 90 years of the last century. In the late 90-ies of the twentieth century, a private company LLC PDSF “Agrodorspetsstroy” carried out a large amount of works (trenches, drilling, underground prospect holes) for further exploration of quartz-vein ore bodies. Zhilyaeva with co-authors [1] according to the probing analysis results confirmed the non-industrial auriferousness, widely developed in the ore field, of beresitized and listwenitized rocks containing sulfide mineralization Upon their data, the gold content in beresites is 1.5 - 2.8 g/t, and in listwenites is 0.1 - 1.5 g/t. Our research was focused on the study of lithological and petrographic control factors, material composition and productivity of various morphostructural types of ore mineralization in order to identify the distribution extent, except Au and Ag, of other useful components, the account of which could increase the value of extracted complex ores and thereby ensure the economic profitability of open-pit mining
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