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ИСТИНА ЦЭМИ РАН |
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Inclusions in cumulus olivine from ultramafic rocks of the satellite Uitkomst Complex in the Bushveld Igneous Province were studied. The melt compositions of primary melt inclusions are high-magnesian (up to 18 wt% MgO), water-poor and alkali-rich. Their host olivine crystallised at a temperature exceeding 1430°C. Inclusions of the second type have a silicic alkali-rich composition and are homogenised at 1190-1230°C. The third type of inclusions is represented by coarser multi-mineral aggregates that are likely reworked xenoliths trapped in olivine