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Gahnite and columbite in an alkali-feldspar granite from New Zealand

Published online by Cambridge University Press:  05 July 2018

A. J. Tulloch
A. J. Tulloch*
Affiliation:
Geology Department, Otago University, Dunedin, New Zealand*
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Abstract

Gahnite and columbite with compositions (Zn5.96Fe1.55Mg0.21Mn0.13)Σ7.85Al16.09O32 and (Nb7.36Ta0.60Mn2.95Fe0.98Ti0.09)Σ11.98O24 occur as accessory phases in a highly evolved garnetiferous muscovite alkalifeldspar granite. Both phases have developed as a result of a concentration of Zn, Nb, and Ta during the fmal stages of the fractional crystallization which led to the formation of the pluton, and the lack of a major mafic mineral such as biotite, in which these elements are normally camouflaged in granitoid rocks.

Type
Research Article
Information
Mineralogical Magazine , Volume 44 , Issue 335 , September 1981 , pp. 275 - 278
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1981

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Footnotes

*

Present address: NZ Geological Survey, PO Box 30368, Lower Hutt, New Zealand.

References

Barker, W. W. and Graham, J. (1974). Am. Mineral. 59, 1051-4.Google Scholar
Berry, L. G. and Mason, B. (1959). Mineralogy. Freeman, W. H., San Francisco.Google Scholar
Blaxland, A. B. (1971). Mineral Deposita, 6, 313-20.CrossRefGoogle Scholar
Burns, R. G. (1970). Mineralogical Applications of Crystal Field Theory. Cambridge University Press.Google Scholar
Cooper, A. F. (1971). Bull. Geol. Soc. Am. 82, 1327-40.CrossRefGoogle Scholar
Deer, W. A., Howie, R. A., and Zussman, J. (1966). An Introduction to the Rock-forming Minerals. Longmans, London.Google Scholar
Frost, B. R. (1973). Am. Mineral. 58, 831-4.Google Scholar
Gandhi, S. M. (1971). Mineral. Mag. 38, 528-9.CrossRefGoogle Scholar
Giese, R. F. (1975). Nature, 256, 31-2.CrossRefGoogle Scholar
Grice, J. D., Cerny, P., and Ferguson, R. B. (1972). Can. Mineral. 11, 609-42.Google Scholar
Grindley, G. W. (1978). In The Geology of New Zealand, pp. 94-5, NZ Government Printer, Wellington.Google Scholar
Holland, H. D. (1972). Econ. Geol. 67, 281-301.Google Scholar
Hutton, C. O. (1950). Bull. Geol. Soc. Am. 61, 635–716.CrossRefGoogle Scholar
Hutton, C. O. (1957a). Trans. Roy. Soc. New Zealand, 84, 791–803.Google Scholar
Hutton, C. O. (1957b). Am. Mineral. 42, 342-53.Google Scholar
Hutton, C. O. (1958). Ibid. 43, 112-19.Google Scholar
Lisitsyn, A. E. and Urkina, K. O. (1974). Zap. Vses. Mineral. Obshch. 103, 641-3 [MA 75-3538].Google Scholar
Mason, B. (1963). Principles of Geochemistry. John Wiley and Sons, New York.Google Scholar
Nickel, E. M., Rowland, J. F., and McAdam, R. C. (1963a). Am. Mineral. 48, 961-79.Google Scholar
Nickel, E. M., Rowland, J. F., and McAdam, R. C. (1963b). Can. Mineral. 7, 390-402.Google Scholar
Oftedahl, C. (1972). Norsk Geol. Tidsskr 52, 447-9.Google Scholar
Richardson, S. W. (1968). J. Petrol. 9, 467-88.CrossRefGoogle Scholar
Rimsaite, J. H. Y. (1967). Bull. Geol. Surv. Can. 149.Google Scholar
Tulloch, A. J. (1979). Unpubl. Ph.D. thesis, University of Otago, New Zealand.Google Scholar
Turekian, K. K. and Wedepohl, K. H. (1961). Bull. Geol. Soc. Am. 72, 175-92.CrossRefGoogle Scholar
Viswanathan, S. (1973). J. Geol. Soc. India, 14, 23-30.Google Scholar
Von Knorring, O. and Dearnley, R. (1960). Mineral. Mag. 32, 366-78.Google Scholar
Watters, W. A., Todd, H. J., and Sixtus, E. J. (1961). New Zealand J. Geol. Geophys. 4, 270-3.CrossRefGoogle Scholar
Wedepohl, K. H. (1970). Handbook of Geochemistry, Springer-Verlag, Berlin.Google Scholar
Zelt, G. A. D. (1975). Bull. Geol. Soc. Finland, 47, 117-25.CrossRefGoogle Scholar