Contents

Geology of Ore Deposits

---

Vol. 62, No. 6, 2020

---

Dedicated to the 90th Anniversary of IGEM RAS

Mineralogy of Precious Metals in Ores of the Biksizak Base–Metal Deposit, South Urals, Russia

O. Yu. Plotinskaya, K. A. Novoselov and R. Seltmann p. 439  abstract

Index Minerals of the Hydrothermal Arsenide Process of the Formation of Cobalt Deposits of the Bou Offro–El Graara Ore Belt in the Anti-Atlas Province, Morocco

V. I. Lebedev and Yu. A. Kalinin p. 457  abstract

Structural-Morphological Types and Localization Conditions of the Apocarbonate Talc Mineralization in the Beloretsk District of the Western Urals Province

N. V. Granovskaya and A. V. Kochergin p. 480  abstract

Dissolution of Natural Octahedral Diamonds in an Fe–S Melt at High Pressure

V. M. Sonin, E. I. Zhimulev, A. A. Chepurov, E. S. Lindenblot, A. M. Logvinova, D. V. Shcheglov, B. S. Pomazanskii, V. P. Afanas’ev and A. I. Chepurov p. 497  abstract

Multi-Stage Fluid System Responsible for Ore Deposition in the Ossa-Morena Zone (Portugal): Constraints in Cu-Ore Deposits Formation

M. Maia, N. Moreira, S. Vicente, J. Mirão, F. Noronha and P. Nogueira p. 508  abstract

---

Short Communications

On the Prospects of Diamond Content of the Southern Side of the Vilyui Syneclise

V. P. Afanasiev, N. P. Pohilenko, S. S. Kuligin and D. A. Samdanov p. 535  abstract

The Unique Sabantuy Chromite Paleoplacer in the Sedimentary Cover of the Eastern European Platform

I. R. Rakhimov, D. E. Saveliev, V. V. Kholodnov and D. A. Zamyatin p. 542  abstract

---