Ongonite from Ongon Khairkhan, Mongolia

@article{temprok1991OngoniteFO,
  title={Ongonite from Ongon Khairkhan, Mongolia},
  author={M. {\vS}temprok},
  journal={Mineralogy and Petrology},
  year={1991},
  volume={43},
  pages={255-273}
}
SummaryAlbite-topaz kerotophyres, termed ongonites, were discovered byV. I. Kovalenko and coworkers at Ongon Khairkhan in Mongolia in 1970. The type area was revisited, described, resampled, the new data is compared with the earlier data and that from similar rocks elsewhere (Beauvoir and Cinovec granites; Macusani glass).Ongonites are fluorine-rich peraluminous sodic two feldspar granitoids with orthoclase and albite phenocrysts, high modal and normative albite content and the presence of… Expand
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