Abstract
Accessory andalusite has been found in some late-stage granitic differentiates of the South Mountain batholith. The andalusite is petrographically distinct from the andalusite of the thermal aureole, and it occurs in regions of the batholith which show little evidence of contamination by the country rocks. Analyses of biotites from andalusite-bearing and andalusite-free phases suggest that those coexisting with andalusite actually grew in equilibrium with the andalusite. It is concluded that magmatic andalusite must be confined mainly to water-saturated, peraluminous, epizonal granites, and some possible P-T paths for the crystallization of magmatic andalusite are considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Albuquerque, C.A.R. de: Geochemistry of biotites from granitic rocks, Northern Portugal. Geochim. Cosmochim. Acta 37, 1779–1802 (1973)
Althaus, E., Karotke, E., Nitsch, K.B., Winkler, H.G.F.: An experimental re-examination of the upper stability limit of muscovite plus quartz. Neues Jahrb. Mineral. Monatsh. 325–336 (1970)
Brammall, A., Harwood, H.F.: The Dartmoor granites: their genetic relationships. Quart. J. Geol. Soc. London 88, 171–237 (1932)
Foster, M.D.: Correlation of dioctahedral potassium micas on the basis of their charge relations. U.S. Geol. Surv. Bull. 1036-D, 57–67 (1956)
Haslam, H.W.: The Ben Nevis igenous complex. Unpub. Ph. D. Dissertation, Cambridge University (1965)
Holdaway, M.J.: Stability of andalusite and the aluminium silicate phase diagram. Am. J. Sci. 271, 97–131 (1971)
Jamieson, R.A.: The contact of the South Mountain batholith near Mount Uniacke, Nova Scotia. Unpub. Hons. Thesis, Dalhousie University (1974)
Kent, G.R.: On four pegmatites in southwestern Nova Scotia. Unpub. M. Sc. Thesis, Dalhousie University (1962)
Lambert, I.B., Robertson, J.K., Wyllie, P.J.: Melting reactions in the system KAlSi3O8-SiO2-H2O to 18.5 Kilobars. Am. J. Sci. 267, 609–626 (1969)
Luth, W.C., Jahns, R.H., Tuttle, O.F.: The granite system at pressures of 4 to 10 kilobars. J. Geophys. Res. 69, 759–773 (1964)
McKenzie, C.B., Clarke, D.B.: Petrology of the South Mountain batholith, Nova Scotia. Can. J. Earth Sci. 12, 1209–1218 (1975)
Richardson, S.W., Gilbert, M.C., Bell, P.M.: Experimental determination of kyanite-andalusite and andalusite-sillimanite equilibria: the aluminum silicate triple point. Am. J. Sci. 267, 259–272 (1969)
Robertson, J.K., Wyllie, P.J.: Rock-water systems, with special reference to the water-deficient region. Am J. Sci. 271, 252–277 (1971)
Rose, E.L.: Andalusite and corundum-bearing pegmatites in Yosemite National Park, California. Am. Mineralogist 42, 635–647 (1957)
Strens, R.G.J.: Stability of Al2SiO5 solid solutions. Mineral. Mag. 36, 839–849 (1968)
Whitney, J.A.: History of granodioritic and related magma systems: An experimental study. Unpub. Ph. D. Thesis, Stanford Univ. (1972)
Wright, W.J.: Data on the method of granitic intrusion in Nova Scotia. Trans. Roy. Soc. Canada 25, 3rd series, Sec. 4, 309–330 (1931)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Clarke, D.B., McKenzie, C.B., Muecke, G.K. et al. Magmatic andalusite from the South Mountain batholith, Nova Scotia. Contr. Mineral. and Petrol. 56, 279–287 (1976). https://doi.org/10.1007/BF00466826
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00466826