Contents

Geology of Ore Deposits

Vol. 68, No. 3, 2026

The Bolshoy Kanimansur Epithermal Ag–Pb–Zn–Cu–Bi Deposit, Tajikistan: Thermodynamic Modeling of Deposition Conditions of the Early-Stage Mineral Assemblages

N. I. Streltsova, N. N. Akinfiev, and N. S. Bortnikov p. 357  abstract

Ore-Bearing Breccias of the Tunantza Epithermal Gold Deposit, Cordillera del Condor, Southeastern Ecuador

J. P. Medina, P. A. Ignatov, and I. V. Vikentyev p. 385  abstract

U–Th–REE Mineralization of the Bystrinsk Skarn-Porphyry Au–Cu–Fe Deposit (Eastern Transbaikalia): Typomorphic Characteristics, Peculiarities of Formation, and Genetic Implications

G. D. Kiseleva, V. A. Kovalenker, S. E. Borisovsky, Yu. I. Yazykova, and N. V. Trubkin p. 396  abstract

Kyzyk-Chadr Au–Mo–Cu Porphyry Deposit (Eastern Tuva, Russia): Noble-Metal Mineralization, PT-Parameters and Ore-Bearing Fluid Composition

R. V. Kuzhuget, N. N. Ankusheva, V. I. Losev, Yu. A. Kalinin, A. Sh. Shavekina, A. V. Bayir-ool, and I. V. Vikentyev p. 413  abstract

Typomorphic Features of Platinum Minerals in the Development of the Method of 190Pt–4He Dating

A. G. Mochalov, O. L. Galankina, O. V. Yakubovich, and N. S. Bortnikov p. 442  abstract

Stratiform Barite–Pb–Zn Deposits of the Zhairem Ore Field (Central Kazakhstan) as SEDEX-Type Deposits: Structure, Ore Composition, and Formation Conditions

A. I. Brusnitsyn, N. V. Dmitrieva, and S. A. Sadykov p. 463  abstract

Chrome Spinels as an Indicator of Diamond-Bearing Kimberlites

A. O. Serebriannikov, A. M. Logvinova, D. S. Mikhailenko, Y. Xu, and N. P. Pokhilenko p. 490  abstract

Chrome Spinels of the Fedorov Placer Cluster of the Southern Cis-Urals (Bashkiria, Russia) and Their Origin

A. V. Lalomov, D. E. Saveliev, L. M. Sitdikova, A. V. Grigorieva, S. E. Borisovsky, R. M. Chefranov, Yu. N. Ivanova, and L. A. Ivanova p. 504  abstract

Mineral Forms of Phosphorus in Ooidal Iron Ores of the Marsyaty Deposit (Northern Urals)

E. V. Belogub, K. A. Novoselov, A. I. Brusnitsyn, M. A. Rassomakhin, and V. N. Bocharov p. 518  abstract