© 2003 V.L. Semenov1, L.P. Anikin1, E.G. Sidorov1, V.A. Rashidov2

1The Institute of Volcanology, FED, RAS, Petropavlovsk-Kamchatsky, 683006, Piip blvd., 9, Russia;
2Institute of Volcanic Geology and Geochemistry FED RAS, 683006, Petropavlovsk-Kamchatsky, Piip Blvd

In the Koryak-Kamchatka region, we have documented demantoid bedrock and placer deposits, related to concentric-zoned pyroxenite-dunite and dunite-garzburgite (alpine) massives.