FINDING OF Cr-V-CONTAINING MINERALS IN MARBLES AND QUARTZITES OF THE SVYATOI NOS PENINSULA (Lake Baikal)
V.A. Makrygina, Z.I. Petrova, A.A. Koneva, and L.F. Suvorova
Institute of Geochemistry, Siberian Branch of the RAS, 1a ul. Favorskogo, Irkutsk, 664033, Russia
Keywords: Cr-V- containing minerals, metamorphic rocks, stratigraphy
Pages: 1389-1398
Subsection: PETROLOGY, GEOCHEMISTRY, AND MINERALOGY
Abstract
Accessory inclusions of Cr-V-garnets, Cr-V-Ba-micas, Cr-V-diopsides, zoisites, and titanites have first been found in exposed member of alternating marbles, quartzites, and diopside schists on the shore of Chivyrkui Bay on the Svyatoi Nos Peninsula (Baikal). The minerals show a strongly uneven distribution of Cr and V. Their composition fields overlap the fields of similar minerals of the Ol'khon and Slyudyanka series and expand the spectra of mineral compositions. Along with the typical alternation of metasedimentary rocks, the presence of these rare minerals unambiguously evidences that the deposits of the Ol'khon series extend to the Svyatoi Nos Peninsula.
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