Geokhimiya, 2000, V 38, N 3, March.

Geochemistry and Genesis of the Kti-Teberda Tungsten Deposit, 
Northern Caucasus: Evidence from the Geochemistry and EPR Spectroscopy 
of Quartz and Scheelite
A. G. Gurbanov, L. V. Bershov, V. I. Rekharskii,
A.V. Speranskii, K. V. Podlesskii, and V. I. Andrianov 
p. 209
 
Synthesis and X-ray Diffraction Study of (K,Rb)-Feldspar Solid Solution:
Preliminary Data
A. M. Koval'skii, A. R. Kotel'nikov, A. M. Bychkov, A. V.Chichagov,
and O. L. Samokhvalova 
p. 220  

Thallium Distribution in Intrusive Rocks of the Pamirs and Southern Tien
Shan, Tajikistan
V. V. Mogarovskii 
p. 225  

Methane as a Source of Organic Matter and Carbon Dioxide
of Carbonates at a Cold Seep in the Norway Sea
A. Yu. Lein, N. V. Pimenov, A. S. Savvichev, G. A. Pavlova,
P. R. Vogt, Yu. A. Bogdanov, A. M. Sagalevich, and M. V. Ivanov
p. 232  

Geochemical Characterization of Oils of the West Siberia
by the Composition of Alkylbenzenes
A.K. Golovko, A. E. Kontorovich, and G. S. Pevneva 
p. 246
 
Mechanism of Formation of the Hydrocarbon Composition
of Gas-Condensate-Oil Systems
Z. V. Yakubson and T. P. Safronova 
p. 258  

Correlation Diagnostics of Hydrocarbon Anomalies
in Bottom Sediments of the Arctic Shelf
V. I. Petrova, G. I. Batova, and M. A. Galishev 
p. 265  

Variability of Methane Fluxes during the Cold Earth Degassing
G. I. Voitov 
p. 274  

Geochemical Features of an Anthropogenic Impoundment
with Cyanidation Wastes of Gold-Arsenopyrite-Quartz Ores
O. L. Gas'kova, S. B. Bortnikova, A. A. Airiyants,
Yu. P. Kolmogorov, and M. V. Pashkov 
p. 281  


Short Communications


Experimental Determination of the Redox Potential of Rock-Water Systems.
I. Formulation of the Problem. System Ni/NiO, H2O, HCl, AgCl/Ag
B. N. Ryzhenko and N. I. Kovalenko 
p. 292  

Geochemistry of Pyroxenite-Gabbroid Nodules in Alkaline Basalts
of the Southern Tien Shan, Tajikistan, in the Context
of the Composition and Genesis of the "Crustal-Mantle Mix" 
Layer in Mobile Belts
V. S. Lutkov 
p. 297  

Genesis and Compositional Evolution of the Parental Melts
of Late Pliocene-Quaternary Subalkaline Basaltoids in the 
Lesser Caucasus
N. A. Imamverdiev 
p. 304  

Ta and Nb in Rare-Metal Granites of Primorie and Metamorphic Rocks
of the Khanka Massif
A. K. Rub, I. V. Mishkina, M. G. Rub, N. N. Krivoshchekov, and N.
A.Ashikhmina 
p. 309  

CO2 Exchange between the Ocean and Atmosphere in the Past and Present
V. S. Savenko 
p. 313