Geochemistry International, 1999, V 37, N 3.

Transport and Isotope Fractionation during Phase Convection
in the Melt-Solid Phase System
M. Yu. Spasennykh 
p. 193

Rare Earth Elements in Corundum-bearing Metasomatic and Related Rocks of
the Eastern Pamirs
E. N. Terekhov, V. A. Kruglov, and V. I. Levitskii 
p. 202
Biotite from Megacryst Assemblages in Alkali Basaltoids of the Vitim
K. D. Litasov and Yu. D. Litasov 
p. 213  

Water in Volcanic Glasses: A Near-Infrared Spectroscopic Study
V. N. Bykov, V. V. Nasedkin, V. N. Anfilogov, and V. E.Eremyashev 
p. 224  

Complex Formation of Mercury with Humus Acids: An Important Stage
of the Biospheric Mercury Cycle
G. M. Varshal, I. Ya. Koshcheeva, S. D. Khushvakhtova, T. K.
Velyukhanova, Yu. G. Tatsii, V. N. Danilova, O. A. Tyutyunnik, D. N. Chkhetiya,
and A. Kh. Galuzinskaya 
p. 229  

Boracite Formation Conditions during Halogenesis
V. I. Borisenkov† and T. D. Aksenova 
p. 235  

Coprecipitation of the [frame9], [frame10], [frame11], [frame12], and
[frame13] Oxyanions
with Fe Hydroxide in Submarine Hydrothermal Plumes: Experimental Modeling
A. V. Savenko 
B. p. 240  

Genesis of Alkaline Carbonate Contaminated Groundwaters in the Zones of Oil
and Gas Deposits
S. R. Krainov, A. P. Belousova, B. N. Ryzhenko, and G. A. Solomin
p. 248 

Organic Matter in the Mineral Waters of Orogenic Regions of Central Asia
G. M. Shpeizer, Yu. K. Vasil'eva, G. M. Ganovicheva, L. M.Mineeva,
V. A. Rodionova, I. S. Lomonosov, and Wang Yansin 
p. 259
Thermodynamics of Phase Equilibria in Water-Salt Systems Modeling Natural
M. V. Charykova 
p. 268  

Short Communications
Oxygen Isotopic Evidence of Serpentine and Talc Dehydration in Ultramafic Rocks V. I. Ustinov and A. V. Ukhanov p. 276 U-Pb Age of Gabbronorites of the Zhemchuzhnyi Massif: Consequences for the Paleoproterozoic Evolution of the Belomorian Mobile Belt N. M. Kudryashov, V. V. Balaganskii, E. A. Apanasevich, and G. I.Ryungenen p. 278 A Search for Superheavy Elements in the Cosmic Matter A. A. Ulyanov p. 282