Geology of Ore Deposits, 2020, V 62, N 3.

On the 90th Anniversary of IGEM RAS
Oscillatory Zoning in Tennantite-(Fe) at the 
Darasun Gold Deposit (Eastern Transbaikal Region, Russia)
N. G. Lyubimtseva, N. S. Bortnikov and S. E. Borisovskii 
p. 177  

Gold-Bearing Rodingites of the Agardag Ultramafic 
Massif (South Tuva, Russia) and Problems of Their Genesis
V. V. Murzin, G. A. Palyanova, D. A. Varlamov and S. N. Shanina 
p. 204  

The Tumannoe Gold–Antimony Occurrence (East Sayan, Russia): 
Mineralogy, Fluid Inclusions, S and O Isotopes, and U–Pb 
and 40Ar/39Ar Age
B. B. Damdinov, L. B. Damdinova, V. B. Khubanov, 
D. S. Yudin, A.V. Travin and M. D. Buyantuev 
p. 225  

Short Communications

Askold Gold Deposit (Askold Island, Primorye, Russia): 
Physicochemical Parameters and Composition of Ore-Forming Fluids
O. O. Stavrova, V. Yu. Prokofiev, A. V. Mokhov and N. S. Bortnikov 
p. 248  

Behavior of Trace Elements during Oxidation of Sphalerite
of the Irinovskoe Hydrothermal Sulfide Field (13°20′ N, Mid-Atlantic Ridge)
I. Yu. Melekestseva, V. V. Maslennikov, N. R. Ayupova, 
E. V. Belogub, S. P. Maslennikova, V. E. Bel’tenev, 
L. Danyushevsky and R. Large 
p. 254