| Reference Type | Journal (article/letter/editorial) |
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| Title | Pyroxenes from the gabbros of the Marangudzi ring complex, Rhodesia |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Hossain, M. T. | Author |
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| Year | 1977 (March) | Volume | 41 |
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| Issue | 317 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_41/41-317-111.pdf+ |
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| DOI | doi:10.1180/minmag.1977.041.317.16Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 2734 | Long-form Identifier | mindat:1:5:2734:6 |
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| GUID | 0 |
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| Full Reference | Hossain, M. T. (1977) Pyroxenes from the gabbros of the Marangudzi ring complex, Rhodesia. Mineralogical Magazine, 41 (317) 111-119 doi:10.1180/minmag.1977.041.317.16 |
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| Plain Text | Hossain, M. T. (1977) Pyroxenes from the gabbros of the Marangudzi ring complex, Rhodesia. Mineralogical Magazine, 41 (317) 111-119 doi:10.1180/minmag.1977.041.317.16 |
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| In | (1977, March) Mineralogical Magazine Vol. 41 (317) Mineralogical Society |
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| Abstract/Notes | SummaryChemical, X-ray, and optical analyses of eight Ca-rich pyroxenes and three coexisting Ca-poor pyroxenes from the gabbros of the Marangudzi ring complex, Rhodesia, are presented. Both the series show limited Fe-enrichment. High Ca-content of the clinopyroxenes together with their restricted Fe-enrichment, having a trend from Ca44·8Mg42·6Fe12·6to Ca42·7Mg37·7Fe19·6, could be indicative of an alkaline nature. But the presence of a Ca-poor pyroxene phase with a compositional trend between Ca2·9Mg71·2Fe25·9 and Ca3·1Mg63·0 Fe34·9 onwards in small amounts suggests tholeiitic to calc-alkaline nature. Certain characteristics in the variation in composition of the pyroxenes confirm a transitional nature of the Marangudzi parent magma, originating at a depth comparatively greater than the normal tholeiitic magma, but less deep than alkaline magma, at a fairly high pressure. The Marangudzi pyroxenes are compared with the pyroxenes of the similar world-wide igneous complexes. |
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