Sapphire-bearing rocks from MacRobertson Land, Antarctica
Published online by Cambridge University Press: 14 March 2018
Summary
A small isolated outcrop in a large area of charnockites in the Mawson area, MacRobertson Land, Antarctica, consists of enstatite-sapphirine-cordierite rocks. Other highly magnesian outcrops occur in the district and these rocks may be completely recrystallized xenoliths. Analyses of the country rock, the two sapphirine-bearing rocks, and the sapphirine are given; the country rock is very rich in iron and has a high FeO : MgO ratio, while the sapphirine-bearing rocks are very low in iron and high in MgO, approximating to ternary mixtures of MgO, Al2O3, and SiO2.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 239 , December 1957 , pp. 690 - 697
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1957
References
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