Abstract
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.
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References
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Johannes, W. 1968. Contr. Mineral. Petrol. 19: 309–315.
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Trommsdorff, V. and Evans, B. W.1974. Schweiz. Mineral. Petrogr. Mitt. 54: 333–352.
Turner, F. J. 1968 Metamorphic Petrology. McGraw-Hill Book Company, New York.
Herd, R. K., Windley, B. F., and Ghisler, M. 1969. Geol. Surv. Greenland Rept. No. 24.
Johannes, W. 1968. Contr. Mineral. Petrol. 19: 309–315.
Johannes, W.1969, Am. J. Sci. 267: 1083–1104.
Lensch, G. 1971. Contr. Mineral. Petrol. 31: 145–153.
Rice, J. M., Evans, B. W., and Trommsdorff, V. 1974. Contr. Mineral. Petrol. 43: 245–251.
Seifert, F. 1974, J. Geol. 82: 173–204.
Trommsdorff, V. and Evans, B. W. 1969. Schweiz. Mineral. Petrog. Mitt. 49: 325–332.
Trommsdorff, V. and Evans, B. W.1972. Am. J. Sci. 272: 423–437.
Trommsdorff, V. and Evans, B. W.1974. Schweiz. Mineral. Petrogr. Mitt. 54: 333–352.
Turner, F. J. 1968 Metamorphic Petrology. McGraw-Hill Book Company, New York.
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Winkler, H.G.F. (1979). Metamorphism of Ultramafic Rocks: Systems MgO-SiO2-CO2-H2O and MgO-CaO-SiO2-H2O. In: Petrogenesis of Metamorphic Rocks. Springer Study Edition. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-4215-2_11
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DOI: https://doi.org/10.1007/978-1-4757-4215-2_11
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