Geochemistry International, 2003, V 41, N 2, February.

Modeling of the Equilibrium Crystallization of Ultramafic Rocks
with Application to the Problems of Formation of Phase Layering
in the Dovyren Pluton, Northern Baikal Region, Russia
A. A. Ariskin, E. G. Konnikov, and E. V. Kislov 
p. 107  

Distribution of Trace Elements in Traps of the Southern Siberian Platform
G. D. Feoktistov 
p. 130  

Geochemical Features of Tuffisites of the Krasnovishersk Complex, Northern Urals
E. A. Landa and L. I. Luk'yanova 
p. 136  

REE Geochemistry in Metamorphic Amphiboles
G. M. Drugova and S. G. Skublov 
p. 146  

Formation Conditions of the Keivitsa Cu-Ni Deposit, Northern Finland:
Evidence from S and C Isotopes
L. N. Grinenko, E. Hanski, and V. A. Grinenko 
p. 154  

Nature of Carbonates in the Gulf of Cadiz
A. Yu. Lein, A. M. Ashadze†, A. I. Gorshkov,
O. Yu. Bogdanova, and N. V. Ul'yanova 
p. 168  

EPR Study of Cr3+ Doping Centers in Mg2SiO4:Cr,Li Crystals
and a Computer Structure Simulation
R. M. Mineeva, P. N. Kamozin, A. V. Gaister, V. B. Dudnikova,
E. V. Zharikov, and V. S. Urusov 
p. 182  

Short Communications


Composition of Megacrysts and Evolution of Primary Melt for Rocks
of the Rhyolite-Basalt Association of Iceland
N. S. Murav'eva and V. G. Senin 
p. 187  

Nature of the Emanation (Radon) Precursors of Earthquakes
V. P. Rudakov 
p. 194  

Geochemical and Petrographical Studies and Origin of the Spheroidal Dolomite
in the Upper Cretaceous/Lower Tertiary Maghra El-Bahari Formation
at Gabal Ataqa, Suez Canal District, Egypt
H. A. Wanas 
p. 197  

Perspectives of the Quantum-Chemical Calculations of the Thermodynamic 
Potentials of a Hydration Reaction
M. F. Vigasina and R. Yu. Orlov 
p. 209