Geological-Structural Position and Formation Conditions of Gold-Containing Porphyry Copper Deposits of Mekhmanian Ore-Magmatic System (Lesser Caucasus, Azerbaijan)
Mansurov I. Mamoy, Tahmazova H. Tarana, Sattarzadeh A. Nigar
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Abstract
This article focuses on geological-structural position and formation conditions of gold-containing deposits of Mekhmanian ore-magmatic system (OMS) according to tectonic position of deposits, material composition of ore-bearing and ore-hosting intrusive complexes, specifics of mineral composition, quantity and correlation of main and associated components. There is a new data allowing to estimate formation conditions and matter sources of OMS deposits. Productive mineralization has been determined which occurs by two stages- 1) quartz-molybdenite, quartz-chalcopyrite; 2) quartz-chalcosine-pyrite-chalcopyrite, sphalerite-galena-gold-rare-metal. At first stage concentrators of gold are pyrite and chalcopyrite, and its content is non-uniform, and at second stage gold-containing are represented by galena, sphalerite and also fahl ores and tellurides. We distinguish three gold-bearing associations according to mineral composition of ores, they are- quartz-molybdenite-chalcopyrite, quartz-pyrite-chalcopyrite and quartz-galena-sphalerite.
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