Abstract
Chemical composition of the phases occurring as corona structures in the Thessaloniki gabbros are subjected to algebraic method of treatment following Korzhinskii [1]. The analysis reveals that the mineralogical reactions responsible for the growth of the corona structures were possibly allochemical in nature in regard to the non-volatile components. The chemical similarity of the pyroxenes occurring within and beyond the corona structures in the gabbros appears compatible with such a model.
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References
Korzhinskii, D.S.: Physicochemical basis of the analysis of the paragenesis of minerals, 142 pp. New York: Consultants Bureau 1959
Sapountzis, E.S.: Coronas from the Thessaloniki gabbros (North Greece). Contrib. Mineral. Petrol. 51, 197–203 (1975)
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Carmichael, D.M.: On the mechanism of prograde metamorphic reactions in quartz bearing pelitic rocks. Contrib. Mineral. Petrol. 20, 244–267 (1969)
Griffin, W.L., Heier, K.S.: Petrological implications of some corona structures. Lithos 6, 315–335 (1973)
References
Sapountzis, S.E.: Coronas from the Thessaloniki gabbros (North Greece). Contrib. Mineral. Petrol. 51, 197–203 (1975)
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Dasgupta, H.C., Sapountzis, E.S. Coronas from the Thessaloniki gabbros, North Greece. Contr. Mineral. and Petrol. 56, 305–309 (1976). https://doi.org/10.1007/BF00466829
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DOI: https://doi.org/10.1007/BF00466829