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The Ulandryk and related iron oxide-Cu-REE(-Au-U) prospects in the Russian Altai: A large emerging IOCG-type system in a Phanerozoic continental setting by Serguei G. Soloviev; Sergey G. Kryazhev; Vadim S. Kamenetsky; Vasily N. Shapovalenko; Svetlana S. Dvurechenskaya; Alexei V. Okulov; Konstantin I. Voskresensky is a Earth and Planetary Sciences article available to read on EtoBox.

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The Ulandryk and related prospects in the Altaid orogenic belt (near the Russian-Mongolian border) comprise intense iron oxide (hematite), Cu, REE, and locally U mineralization and are estimated to contain in excess of 240 Mt iron oxide ores and 3.7 Mt copper. These prospects bear many signatures of the "classic" IOCG (-REE, U) deposits typical of Precambrian terranes but, in contrast, are situated in a Phanerozoic (Paleozoic) setting. They are related to the Early Devonian subvolcanic potassic granite stocks with transitional shoshonitic to A-type granite signatures suggesting a post-orogenic (post-collisional) setting, with some anorogenic (intracontinental to within-plate) affinity. The stocks have been intruded into a coeval local volcanic structure (a volcanic dome complicated by the central caldera) composed of Devonian trachyandesite, trachydacite, quartz latite, rhyolite, rhyolite-dacite, and dominant trachyrhyolite lavas, tuffs and subovolcanic porphyry intrusions. The granitic stocks are accompanied by magmatic and multi-staged hydrothermal breccias, zones of sodic (albite-quartz), potassic (quartz-K-feldspar), propylitic (quartz-albite-chlorite-amphibole) and dominant ph

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Author

Serguei G. Soloviev; Sergey G. Kryazhev; Vadim S. Kamenetsky; Vasily N. Shapovalenko; Svetlana S. Dvurechenskaya; Alexei V. Okulov; Konstantin I. Voskresensky

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)