Geokhimiya, 2000, V 38, N 7.

Analysis of Resolutions of Predictive Models for Anthropogenic Changes
in the Chemical Composition of Groundwaters and Their Optimum Geochemical 
Content 
S. R. Kraynov and B. N. Ryzhenko 
p. 629 

Modeling Geochemical Types of Tonalite–Trondhjemite Melts
and Their Natural Equivalents 
O. M. Turkina 
p. 640 

Premineral Hydrothermal Alteration of Host Rocks at the Schlema 
Uranium Deposit, Erzgebirge, Germany: II. A Computer Modeling 
Vikt. L. Barsukov, N. T. Sokolova, S. N. Knyazeva, and Yu. V. Shvarov 
p. 652
 
Tin-Bearing Borates of Hulsite–Paigeite Series from Skarn Deposits
of Northeastern Russia: Composition and Geochemical Evidence for Genesis 
S. M. Aleksandrov, M. A. Troneva, and G. E. Kuril’chikova 
p. 676 

Thermodynamic Properties of NaCl Solutions at Temperatures Lower than 0°C 
N. N. Akinfiev, M. V. Mironenko, A. N. Dunaeva, and S. A. Grant 
p. 689

Short Communications 

Composition of Mineral Inclusions and Formation of Polycrystalline
Diamond Aggregates (Bort)from the Shengli Kimberlite Pipe, China 
A. I. Gorshkov, Yan Nan Bao, S. V. Titkov, I. D. Ryabchikov, 
L. O. Magazina, and A. V. Sivtsov 
p. 698 

The Origin of Anomalous Geochemical Background of Precious Metals 
in Upper Archean Volcano–Terrigenous Formation of the Belozersk 
Group, Ukrainian Shield 
A. F. Korobeinikov, V. P. Zhulid, and M. V. Ruzina 
p. 706 

Gold Solubility and Species in Aqueous Sulfide Solutions at T = 300°C 
T. P. Dadze, G. A. Kashirtseva, and B. N. Ryzhenko 
p. 708 

Composition of Mantle Xenoliths from Melilitites and Evolution 
of Primary Alkaline Melt in the Nizhnesayanskii Carbonatite Complex 
E. A. Chernysheva and O. Yu. Belozerova 
p. 713 

A Model for the Formation of Xenon with Anomalous Isotope Characteristics 
by Fractionation of Its Precursors, Fission Products of 235U 
V. V. Pukhov 
p. 717