Contents
Geochemistry International

Vol. 50, No. 5, 2012

A simultaneous English language translation of this journal is available from Pleiades Publishing, Ltd.
Distributed worldwide by Springer. Geochemistry International ISSN 0016-7029.

The Arrow of Time at the Early Stages of Biosphere Evolution. Determinism and Pluralism

L. A. Gribov, V. I. Baranov, and I. V. Mikhailov p. 393  abstract

Physicochemical Crystallization Conditions of Al–F Sphene in Metasomatic Rocks
with Ore Mineralization at the Berezitovoe Deposit

O. V. Avchenko, A. S. Vakh, K. V. Chudnenko, and O. I. Sharova p. 409  abstract

Modeling of Catagenetic Transformation of Organic Matter from a Riphean Mudstone
in Hydrous Pyrolysis Experiments: Biomarker Data

V. N. Melenevskii p. 425  abstract

Humic Acids in Brown Coals from the Southern Russian Far East: General Characteristics
and Interactions with Precious Metals

V. A. Avramenko, S. Yu. Bratskaya, A. S. Yakushevich, A. V. Voit, V. V. Ivanov, and S. I. Ivannikov p. 437  abstract

Determination of Point of Zero Charge of PILCS with Single and Mixed Oxide Pillars
Prepared from Tunisian-Smectite

S. Arfaoui, N. Hamdi, N. Frini-Srasra, and E. Srasra p. 447  abstract

Isotopic and Hydrochemical Data to Restrict the Origin of the Groundwater
in the Badain Jaran Desert, Northern China

J. S. Chen, X. X. Sun, W. Z. Gu, H. B. Tan, W. B. Rao, H. Z. Dong, X. Y. Liu, and Z. G. Su p. 455  abstract

Short Communications

Geochemical Structure of the Kivakka Layered Olivinite–Norite–Gabbronorite Intrusion,
Northern Karelia: Distribution of Lithophile Minor Elements

A. A. Yaroshevskii, V. A. Veis, and D. A. Bychkov p. 466  abstract

Distribution and Origin of Petroleum Hydrocarbons in Pichavaram Mangrove Swamp
Along Tamilnadu Coast, Bay of Bengal, India

R. Venkatachalapathy, S. Veerasingam, and V. Rajeswari p.476  abstract

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