Petrogenetic modelling of strongly residual metapelitic xenoliths within the southern Platreef , Bushveld Complex , South Africa

@inproceedings{Johnson2010PetrogeneticMO,
  title={Petrogenetic modelling of strongly residual metapelitic xenoliths within the southern Platreef , Bushveld Complex , South Africa},
  author={Tim E. Johnson and Michael Brown and Ryen W. White},
  year={2010}
}
Xenoliths of quartz-absent Fe-rich aluminous metapelite are common within the platinum group element-rich mafic ⁄ultramafic magmatic rocks of the Platreef. Relative to well-characterized protoliths, the xenoliths are strongly depleted in K2O and H2O, and have lost a substantial amount of melt (>50 vol.%). Mineral equilibria calculations in the NCKFMASHTO system yield results that are consistent with observations in natural samples. Lower-grade rocks that lack staurolite constrain peak pressures… CONTINUE READING

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