Lamproites and other potassium-rich igneous rocks: a review of their occurrence, mineralogy and geochemistry

@article{Bergman1987LamproitesAO,
  title={Lamproites and other potassium-rich igneous rocks: a review of their occurrence, mineralogy and geochemistry},
  author={S. Bergman},
  journal={Geological Society, London, Special Publications},
  year={1987},
  volume={30},
  pages={103 - 190}
}
  • S. Bergman
  • Published 1987
  • Geology
  • Geological Society, London, Special Publications
  • Summary In this paper the geological occurrence, geochemistry and mineralogy of ultrapotassic (K2O/Na2O > 3 (molar ratio)) and perpotassic (K2O/Al2O3 > 1 (molar ratio)) igneous rocks, especially lamproites, are reviewed and discussed in the context of compositionally-similar mantle-derived melts. Lamproites are K- and Mg-rich igneous rocks (typically K2O > 5 wt.%, MgO > 5 wt.%) which possess an exotic and diagnostic mineralogy and geochemistry. Known lamproites occur in 21 major suites or… CONTINUE READING
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