Geochemistry International, 2002, V 40, N 3.

Interstellar Diamond in the Efremovka CV3 Chondrite: 
Pyrolysis of Different Size Fractions of Grains 
A. V. Fisenko, A. B. Verchovsky, L. F. Semenova, and C. T. Pillinger 
p. 209
 
Minor Elements in Clinopyroxene from Paleozoic Volcanics 
of the Tagil Island Arc in the Central Urals 
A. A. Nosova, L. V. Sazonova, V. V. Narkisova, and S. G. Simakin 
p. 219
 
Carbon Isotopic Composition of Organic Matter as a Tool
in Studying Redox Reactions in Hydrothermal Systems 
L. A. Bannikova and A. M. Frid 
p. 233 

Genesis and Mineralogy of Calc Skarns of the Prograde
and Retrograde Metasomatic Stages 
S. M. Aleksandrov 
p. 244 

Specific Behavior of Microquantities of Matter in Natural Processes: 
A Case of Artificial Radionuclides 
F. I. Pavlotskaya 
p. 260 

The Geochemistry of Sedimentary Matter and Particle Fluxes in the Eastern 
Equatorial Atlantic 
V. N. Lukashin, A. B. Isaeva, V. V. Serova, and G. G. Nikolaeva 
p. 267
 
Geochemistry of the Metalliferous Sediments of Hydrothermal Fields of the East 
Pacific Rise, 11°30-13° N. Part 1. Geochemistry of Holocene Sediments 
M. P. Davydov, S. M. Sudarikov, P. A. Aleksandrov, and A. M. Ashadze† 
p. 279

Short Communications 

Study of a Cubic Diamond Crystal from a Placer in Northern China
by Analytical Electron Microscopy and Neutron Activation Analysis 
A. I. Gorshkov, S. V. Titkov, S. F. Vinokurov, I. D. Ryabchikov, 
Yan Nan Bao, L. O. Magazina, and A. V. Sivtsov 
p. 299 

Rb-Sr Age of Metasomatic Rocks from the Southern Saku Massif of Alkaline Rocks 
G. V. Andreev and V. F. Posokhov 
p. 306 

Reviews 

The Theory of Placers by N.A. Shilo: A Geochemical Aspect
in the Classification of Ore Associations 
Yu. G. Shcherbakov 
p. 309