Bogdan Pomazansky, R. Monkhorov, T. Antonova, V. Malkovets, A. Kulagin, Marina Shalkina, Viktoria Batyr, A. Sobakin
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Unaltered kimberlite of Internationalnaya pipe (Mirny field)
The porphyry kimberlite block (intrusive coherent kimberlite, after Scott-Smith, 2013) on the deep horizons of the Internationalnaya pipe is characterized by the lack of olivine macrocryst serpentinization, and the minimum degree of postmagmatic alteration in the matrix minerals. Garnet keliphitization and the composition of olivine and phlogopite outer zones are due to the interaction of deep minerals and the surrounding kimberlite melt at depth. The rapid melt crystallization contributed to the heterogeneous magma structure represented by the macrocryst (porphyry) and aphyric schlieren.
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