Article(electronic)August 7, 2023

Chromian tourmaline and Cr-Sb-W-bearing rutile of the Kamennoozerskoe chromitite occurrence, Central Urals, Russia

In: Moscow University Bulletin. Series 4. Geology, Issue 3, p. 63-76

Baksheev, I. A.; Erokhin, Yu. V.; Ekimenkova, I. A.; Zakharov, A. V.; Grigoriev, V. V.; Yapaskurt, V. O.; Koshlyakova, N. N.

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Abstract

This paper is focused on the tourmaline and associated minerals from veinlets cutting chromitite of the Kamennoozerskoe occurrence, which is a part of the Shabrovskoe district in the Central Urals. Tourmaline belongs to the dravite—oxy-dravite solid solution series, contains Cr (0,52–2,06 а.ф.), Ni (до 0,03 а.ф.), V (до 0,02 а.ф.) The Raman spectroscopy indicates Fe3+ in tourmaline. Rutile associated with tourmaline contains, wt %: 4.68–11.69 Sb2O5, 2.00–8.02 Cr2O3, and 0,88–1,14 WO3. Combination of high Sb and Cr contents in rutile is established possibly for the first time. It is suggested that tourmaline and associated minerals from the veinlets cutting chromite were formed in oxidizing environment.

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