| Reference Type | Journal (article/letter/editorial) |
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| Title | Minerals from the charnockite series of Amaravathi, Andhra Pradesh, South India |
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| Journal | Mineralogical Magazine |
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| Authors | Ramaswamy, A. | Author |
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| Murty, M. S. | Author |
| Year | 1974 (September) | Volume | 39 |
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| Issue | 307 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_39/39-307-807.pdf+ |
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| DOI | doi:10.1180/minmag.1974.039.307.09Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6784 | Long-form Identifier | mindat:1:5:6784:7 |
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| GUID | 0 |
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| Full Reference | Ramaswamy, A., Murty, M. S. (1974) Minerals from the charnockite series of Amaravathi, Andhra Pradesh, South India. Mineralogical Magazine, 39 (307) 807-810 doi:10.1180/minmag.1974.039.307.09 |
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| Plain Text | Ramaswamy, A., Murty, M. S. (1974) Minerals from the charnockite series of Amaravathi, Andhra Pradesh, South India. Mineralogical Magazine, 39 (307) 807-810 doi:10.1180/minmag.1974.039.307.09 |
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| In | (1974, September) Mineralogical Magazine Vol. 39 (307) Mineralogical Society |
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| Abstract/Notes | SummaryThe potash feldspar in the charnockites is orthoclase and they are inferred to have been formed around 700 °C. A twin-law study of the plagioclase indicates an igneous origin of the charnockites and pyroxene granulites. The KD values of the coexisting pyroxenes in the granulites are appropriate to equilibrium at 670 °C. A substantial substitution of A1 for Si in the values of the coexisting pyroxenes in the granulites are appropriate to equilibrium at 670 °C. A substantial substitution of A1 for Si in the Z group in all mafic minerals studied also indicates relatively high temperatures of formation. Almandine is pyroperich, a result of high pressure. The charnockites and pyroxene granulites are inferred to be formed under conditions of high pressure and temperature. |
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