Geochemistry International, 2000, V 38, N 4, April.

Nature of Carbonization in the Carbon-Rich Rocks of the Eastern Sayan
E. M. Galimov, A. G. Mironov, and S. M. Zhmodik 
p. 317  

Diamond Crystals from Peoples Republic of China:
an Electron Spin Resonance and Cathodoluminescence Experimental Study
R. M. Mineeva, A. V. Speranskii, Yanan Bao, L. V. Bershov,
I. D. Ryabchikov, and M. V. Chukichev 
p. 323  

Particle Fluxes, Mineralogy, and Chemistry of Sedimentary Material
in the Broken Spur Hydrothermal Field, Mid-Atlantic Ridge, 29° N
V. N. Lukashin, V. Yu. Rusakov, A. P. Lisitsyn, A. Yu. Lein,
A. B. Isaeva, V. V. Serova, and A. A. Karpenko 
p. 331  

Olivine Nephelinite, Tephrite, Essexite, Phonolite, and Tinguaite
from Kaiserstuhl, Germany: Evidence from Melt Inclusions in Pyroxene
L. I. Panina, V. V. Sharygin, and J. Keller p. 343  

Substitution of Albite by Sanidine: Influence of the Distance
between Minerals on the Reaction Rate
V. A. Alekseev and L. S. Medvedeva 
p. 353  

Experimental Modeling of Barogradient Systems
V. Ya. Medvedev, L. A. Ivanova, S. O. Balyshev, and V. V. Lashkevich 
p. 365  

Geochemistry and Origin of Glauconite of the El-Gedida Mines
and Bahariya Formation (Early Cenomanian), Bahariya Oasis, Western Desert,
Egypt 
Mohamed Abu El-Hassan and G. Tichy 
p. 374  

MINLITH-a Program to Calculate the Normative Mineralogy of Sedimentary
Rocks: the Reliability of Results Obtained for Deposits of Old Platforms
O. M. Rosen, A. A. Abbyasov, A. A. Migdisov, and A. A.
Yaroshevskii 
p. 388  


Short Communications


Estimation of Halogen Content in Granitoid Melts
I. N. Bushlyakov 
p. 401  

Thermodynamic Properties of Thomsonite within the Temperature Range of
5.8-309 K
I. E. Paukov and I. A. Belitskii 
p. 405  

Thermodynamic Model of Metamorphic Processes in Serpentinites: Petrologic
Interpretation
V. V. Velinskii and A. L. Pavlov 
p. 408  


Chronicle

The 2nd Russian School "Geochemical Ecology and Biogeochemical Zoning of
the Biosphere"
V. V. Ermakov 
p. 416