Abstract
various composition, which were found in the polished section of rock with an area of 200 mm 2 . The results of their study are discussed in this paper. Taxiticlike gabbrodolerite contains 11.47 wt % MgO. It is composed of olivine (12-18%), clinoand orthopyroxene (30-45%), plagioclase (45-55%), and ilmenite (1-2%). Ore impregnation excluding ilmenite does not exceed 0.5% visually in this gabbrodolerite. The rock contains a number of accessory minerals including apatite, zircon, baddeleyite, thorite, and monazite. Gabbrodolerite is a fresh rock without newly formed metasomatic and hydrothermal minerals; ore minerals form a small interstitial impregnation. The size of ore minerals is 30-1 µm and smaller, in single cases, up to 70-120 µm. Ore phases form monomineral impregnations, mineral intergrowths, and exsolution textures, which
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