Contents

Geochemistry International

Vol. 57, No. 3, 2019

Effect of Hydrous Pyrolysis on the Distribution of Carbon and Hydrogen Isotopes between Fractions of Organic Matter. The Nature of Oil Seeps in the Uzon Caldera, Kamchatka, Russia

V. S. Sevast’yanov, G. A. Karpov, A. Yu. Bychkov, O. V. Kuznetsova and V. S. Fedulov p. 233  abstract

Characteristics of Acid Melts That Produced the Tephra of Pleistocene–Holocene Eruptions of Ichinsky Volcano, Kamchatka: Evidence from Melt Inclusions

M. L. Tolstykh, M. M. Pevzner, V. B. Naumov and A. D. Babansky p. 243  abstract

Geochemical Evidence for the Depositional Environment of the Esfandaghe Manganese Deposit, Kerman Province, Iran

J. Ahmadi, H. Mirnejad, S. Modabberi and S. Niroomand p. 266  abstract

Mobility of Dissolved Palladium and Platinum Species during the Water–Rock Interaction in a Chloride Environment: Modeling of PGE Behavior during Interaction between Oceanic Serpentinites and Seawater Derivatives

I. V. Kubrakova, O. A. Tyutyunnik and S. A. Silantyev p. 282  abstract

Adsorption of Trace Elements by Bentonite in the Presence of Bacteria

L. V. Perelomov, O. I. Sizova and Yu. M. Atroshchenko p. 290  abstract

Regularities in the Evolution of Groundwater Quality at Abandoned Copper Sulfide Mines at the Levikha Ore Field, Central Urals, Russia

L. S. Rybnikova and P. A. Rybnikov p. 298  abstract

Transformation of Structure and Adsorption Properties of Montmorillonite under Thermochemical Treatment

V. V. Krupskaya, S. V. Zakusin, E. A. Tyupina, O. V. Dorzhieva, M. S. Chernov and Ya. V. Bychkova p. 314  abstract

Short Communications

Structure of Glasses of the Li2O–K2O–GeO2 System: Raman Spectroscopic Data

O. N. Koroleva, N. M. Korobatova, M. V. Shtenberg and T. N. Ivanova p. 331  abstract

Dependence of the Timing of Hydrogeochemical Earthquake Precursor in the Southern Baikal Area on the Energy Classes of the Earthquakes and Their Epicentral Distances

R. M. Semenov, M. N. Lopatin and V. V. Chechel’nitskii p. 341  abstract

The Occurrences of Gold and Its Dissolution Method of Geochemical Mapping Sample of Swamp-Forest Area, China

Hanjiang Pan, Zhizhong Cheng, Rong Yang and Xuejing Xie p. 349  abstract