Hostname: page-component-cb9f654ff-fg9bn Total loading time: 0 Render date: 2025-08-31T01:21:38.262Z Has data issue: false hasContentIssue false
  • English
  • Français

An unusual cordierite-rock from Upington, Cape Province

Published online by Cambridge University Press:  14 March 2018

Morna Mathias
Morna Mathias*
Affiliation:
Department of Geology, University of Cape Town
Get access Rights & Permissions [Opens in a new window]

Extract

Samples of an unusual cordierite-rieh rock from near Upington, Cape Province, were collected by Dr. A. Poldervaart who kindly passed them to me for further study. This paper presents the results of the petrographic examination together with chemical analyses of the rock and of cordierite and biotite, which are two of the constituent minerals.

Information

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 29 , Issue 218 , September 1952 , pp. 936 - 945
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1952

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Berman, (H.), 1937. Constitution and classification of the natural silicates. Amer. Min., vol. 22, pp. 342–408.Google Scholar
Brammall, (A.), 1933. Syntexis and differentiation. Geol. Mag., vol. 70, pp. 97–107.CrossRefGoogle Scholar
Brammall, (A.), and Rao, (B. R.), 1936. The variable composition of cordierite in the Dartmoor granites. Min. Mag., vol. 24, pp. 257–259.Google Scholar
Clarke, (F. W.), 1924. The data of geochemistry. Bull. U.S. Geol. Surv., no. 770. [M.A. 3–64.]Google Scholar
Eskola, (P.), 1914. On the petrology of the Orijärvi region in south–western Finland. Bull. Comm. Geol. Finlande, no. 40.Google Scholar
Eskola, (P.), 1915. On the relations between chemical and mineralogical composition in the metamorphic rocks of the Orijarvi region. Ibid., no. 44.Google Scholar
Folinsbee, (R. E.), 1941. Optic properties of cordierite in relation to alkalies in the cordierite–beryl structure. Amer. Min., vol. 26, pp. 485–500. [M.A. 8–227.]Google Scholar
Hall, (A. J.), 1941. The relation between colour and chemical composition in the biotites. Amer. Min., vol. 26, pp. 29–33. [M.A. 8–161.]Google Scholar
Heinrich, (E. W.), 1946. Studies in the mica group; the biotite–phlogopite series. Amer. Journ. Sci., vol. 244, pp. 836–848. [M.A. 10–73.]CrossRefGoogle Scholar
Nockolds, (S. R.), 1947. The relation between chemical composition and paragenesis in the biotite micas of igneous rocks. Amer. Journ. Sci., vol. 245, pp. 401–420. [M.A. 10–271.]Google Scholar
Read, (H. H.), 1923. The petrology of the Arnage district in Aberdeenshire: a study of assimilation. Quart. Journ. Geol. Soc. London, vol. 79, pp. 446–486. [M.A. 2–537.]CrossRefGoogle Scholar
Rogers, (A. W.), 1910. The Kheis series. Trans. Geol. Soc. South Africa, vol. 13, pp. 93–104.Google Scholar
Rogers, (A. W.), and DU TOIT (A. L.), 1910. Report on the geology of parts of Kenhardt, Prieska, Victoria West and Carnarvon. Ann. Rep. Cape Geol. Comm. for 1909. pp. 9–108.Google Scholar
Turner, (F. J.), 1948. Mineralogical and structural evolution of the metamorphic rocks. Mem. Geol. Soc. Amer., no. 30. [M.A. 10–432.]Google Scholar
Watson, (J.), 1948. Late sillimanite in the migmatites of Kildonan, Sutherland. Geol. Mag., vol. 85, pp. 149–162.CrossRefGoogle Scholar
Winchell, (A. N.), 1937. Cordierite. Amer. Min., vol. 22, pp. 1175–1179. [M.A. 7–208.]Google Scholar