Metamorphism of Ultramafic Rocks: Systems MgO-SiO2-CO2-H2O and MgO-CaO-SiO2-H2O

  • Helmut G. F. Winkler


Two different rock types are predominantly composed of MgO and SiO2: Ultramafic rocks and the much rarer siliceous magnesite rocks. The major mineral constituents of ultramafic rocks are olivine, orthopyroxene, and/or clinopyroxene, and the MgO/FeO ratio of the rocks is very high. CaO is another component present in clinopyroxene.


Metamorphic Rock Bulk Composition Ultramafic Rock Variant Point Temperature Indicator 
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Copyright information

© Springer-Verlag New York Inc. 1974

Authors and Affiliations

  • Helmut G. F. Winkler
    • 1
  1. 1.Institute of Mineralogy and PetrologyUniversity of GöttingenGermany

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