Porphyry Deposits of the South Urals: Rhenium Distribution

Trace-element geochemistry of molybdenite from porphyry Cu deposits of the Birgilda-Tomino ore cluster (South Urals, Russia)

“…X-ray mapping using the Re L α line (Figs 4 b , d , f , 5 b , f , 6 b , 7 b ) showed that most Re-enriched areas form linear zones up to tens of μm wide. Similar linear distribution patterns were revealed in molybdenites from other porphyry Cu-(Mo) deposits of the Urals by X-ray mapping, such as the Verkhneuralskoe Mo-porphyry occurrence (Grabezhev et al ., 2013; Plotinskaya et al ., 2014a), the Voznesenskoe Cu-porphyry deposit (Grabezhev and Voudoris, 2014) and the Mikheevskoe Cu-porphyry deposit (Grabezhev and Shagalov, 2010; Plotinskaya et al ., 2015). Perhaps there are Re-enriched layers, or groups of layers, within the molybdenite structure.…”

“…General features of rhenium distribution in Uralian porphyry copper deposits were discussed by Grabezhev (2013) while the rhenium behaviour of individual deposits and within single grains of molybdenite has been described recently (e.g. Grabezhev and Shagalov, 2010; Grabezhev and Gmyra, 2014; Grabezhev and Hiller, 2015; Grabezhev and Voudouris, 2015; Plotinskaya et al ., 2014 a , 2015). Among the numerous porphyry deposits and occurrences known in the Urals (Plotinskaya et al ., 2017 a , b ) the area of the Birgilda-Tomino ore cluster is one of the most interesting due to a remarkable variability of styles of mineralization (Plotinskaya et al ., 2014 b ) and it is economically promising because of the large Tomino porphyry copper deposit.…”