Cr–V oxides in metamorphic rocks, Lake Baikal, Russia

Author: Koneva, A.A.

Source: Neues Jahrbuch für Mineralogie - Monatshefte, Volume 2002, Number 12, 1 December 2002 , pp. 541-550(10)

Publisher: E. Schweizerbart'sche Verlagsbuchhandlung

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Abstract:

Some rare Cr-V and Cr-V-Ti oxide minerals in association with rutile from metamorphic rocks, Lake Baikal, Russia, have been studied by electron-microprobe analysis. All minerals show a considerable substitution of V for Cr. Extensive ranges of solid solution between eskolaite and karelianite, schreyerite and olkhonskite were noted. The rare V-Ti-oxide berdesinskiite, reported here for the second time, contains high and variable Cr content, to form solid solution series V₂TiO₅-Cr₂TiO₅. Two unknown phases - (Cr,V)₂Ti₂O₇ and (Cr,V)₂Ti₄O₁₁ were identified.

Keywords: ESKOLAITE; KARELIANITE; SCHREYERITE; OLKHONSKITE; BERDESINSKIITE; CHROMIUM; VANADIUM; LAKE BAIKAL

Document Type: Regular paper

DOI: http://dx.doi.org/10.1127/0028-3649/2002/2002-0541

Publication date: 2002-12-01