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Isotopic composition of noble gases and other volatiles (CO2, N2) from minerals of corundum-bearing rocks with isotopically ultralight oxygen from Khitoostrov deposit have been investigated. The studies were conducted on Finesse mass-spectrometry system [1] using step heating in temperature range from 200пїЅ? to 1400пїЅ?. The following minerals were investigated: corundum, amphibole, garnet, staurolite. For the same samples, differential scanning calorimetry and thermogravimetry curves have been obtained. The firs...