Contents

Geology of Ore Deposits

Vol. 62, No. 7, 2020

The Symmetry Statistics of Mineral Species in Various Thermodynamic Environments

S. K. Filatov p. 547  abstract

Granite Systems with Rare-Metal Pegmatites

S. M. Beskin and Yu. B. Marin p. 554  abstract

The Niz’yavr Alkaline Pluton: Age, Isotope Characteristics, and Rare-Metal Mineralization

M. N. Petrovskiy p. 564  abstract

The Lu–Hf Isotope Composition of Zircon from Syenites of the Saharjok Alkaline Massif, Kola Peninsula

V. R. Vetrin and E. A. Belousova p. 574  abstract

Modeling of Mineral Parageneses and Thermobarometry of Metavolcanic Rocks of the Ruker Group in the Southern Prince Charles Mountains, East Antarctica

Yu. L. Gulbin and E. V. Mikhalsky p. 584  abstract

New Minerals

Belogubite, a New Mineral of the Chalcanthite Group from the Gaiskoe Deposit, South Urals, Russia

A. V. Kasatkin, S. N. Britvin, N. V. Chukanov, R. Škoda, A. A. Agakhanov and D. I. Belakovskiy p. 599  abstract

Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure

I. V. Pekov, I. P. Anikin, N. V. Chukanov, D. I. Belakovskiy, V. O. Yapaskurt, E. G. Sidorov, S. N. Britvin and N. V. Zubkova p. 608  abstract

Minerals and Mineral Parageneses

The Mineral Composition of Paleoproterozoic Metamorphosed Massive Sulfide Ores in the Kola Region (A Case Study of the Bragino Ore Occurrence, Southern Pechenga)

A. A. Kompanchenko, A. V. Voloshin and A. V. Bazai p. 618  abstract

Wolframoixiolite in Lithium–Fluorine Granites of the Arga–Ynnakh–Khaya Pluton, Yakutia

V. I. Alekseev, Yu. B. Marin and O. L. Galankina p. 629  abstract

Chevkinite-(Се) and Perrierite-(Се) from the Island Arc Quartz Gabbronorite–Dolerite of the Ayu-Dag Intrusion, Crimean Mountains

E. M. Spiridonov, S. V. Filimonov, E. S. Semikolennykh, N. N. Korotaeva and N. N. Krivitskaya p. 638  abstract

Chrome Spinels in Carbonate Veins of the Onguren Complex, Western Baikal Region

V. B. Savelyeva, E. P. Bazarova and E. A. Khromova p. 652  abstract

Agates from Paleoproterozoic Volcanic Rocks of the Onega Structure, Central Karelia

E. N. Svetova and S. A. Svetov p. 669  abstract