Contents

Geology of Ore Deposits

Vol. 63, No. 7, 2021

On Mineralogical Studies and the Use of Mineralogical Information in Solving Petro- and Ore Genesis Problems

Yu. B. Marin p. 625  abstract

Compositional Evolution of REE- and Ti-Bearing Accessory Minerals in Metamorphic Schists of Atomfjella Series, Western Ny Friesland, Svalbard and Its Petrogenetic Significance

S. A. Akbarpuran Haiyati, Yu. L. Gulbin, A. N. Sirotkin and I. M. Gembitskaya p. 634  abstract

New Minerals

Avdeevite, a Na-Dominant Alkali Beryl: Determination as Valid Mineral Species and New Data

A. A. Agakhanov, D. A. Stepanenko, N. V. Zubkova, L. A. Pautov, I. V. Pekov, A. V. Kasatkin, V. Yu. Karpenko, V. A. Agakhanova, R. Škoda, S. N. Britvin and D. Yu. Pushcharovsky p. 654  abstract

Minerals and Mineral Parageneses

Spectroscopy of Diamonds from the M.V. Lomonosov Deposit

E. A. Vasilev, G. Yu. Kriulina and V. K. Garanin p. 668  abstract

First Finding of Platinum Group Minerals at the Malmyzh Porphyry Gold–Copper Deposit, Khabarovsk Krai, Russia

D. S. Bukhanova, A. V. Kutyrev, E. G. Sidorov and V. M. Chubarov p. 675  abstract

Rutile Enriched in Chalcophile Elements (Sb, Sn, Te), and Ti-rich Varieties of Tripuhyute and Cassiterite from Sublimates of Active Fumaroles at the Tolbachik Volcano, Kamchatka, Russia

F. D. Sandalov, I. V. Pekov, N. N. Koshlyakova, V. O. Yapaskurt, A. A. Agakhanov, E. G. Sidorov and S. N. Britvin p. 682  abstract

Sulfur-Bearing Sodalite, Hackmanite, in Alkaline Pegmatites of the Inagli Massif (Aldan Shield): Crystal Chemistry, Photochromism, and Luminescence

T. A. Radomskaya, E. V. Kaneva, R. Yu. Shendrik, L. F. Suvorova and N. V. Vladykin p. 696  abstract

New Data on the Platinum-Bearing Potential of Chromitites of the Kharcheruz Ultramafic Massif, Polar Urals

A. N. Yurichev, A. I. Chenyshov and E. V. Korbovyak p. 705  abstract

Pyrrhotite–Nisbite–Breithauptite–Sulfoantimonide Micromineral Assemblage: a Product of High-Temperature Recrystallization of Ores at the Yuzhnoe Vein-Type Tin–Silver–Polymetallic Deposit, Sikhote-Alin, Russia

V. V. Ratkin, L. F. Simanenko, O. A. Eliseeva and V. G. Gonevchuk p. 717  abstract

Volborthite Occurrence at the Alaid Volcano (Atlasov Island, Kuril Islands, Russia)

E. S. Zhitova, L. P. Anikin, A. V. Sergeeva, R. M. Ismagilova, V. A. Rashidov, V. M. Chubarov and A. N. Kupchinenko p. 735  abstract