Abstract
New major and trace element and Nd-Sr isotope results are reported for the carbonatites of the Veseloe and Pogranichnoe occurrences, Northern Transbaikalia. The carbonatites from both these occurrences are enriched in Sr, Ba, LREE, Th, U, and depleted in Ti, Cr, and V relative to primitive mantle. As compared to the “average dolomite carbonatite”, the rocks from the Northern Transbaikalia have higher contents of Ni, Cr, and low contents of Ba, Ti, and V. The rocks are characterized by 87Sr/86S in the range of 0.7037–0.7043 and ɛNd from + 0.6 to + 2.05. Obtained geochemical and isotope data indicate that the carbonatites were derived from moderately depleted source with a contribution of enriched component.
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