| Reference Type | Journal (article/letter/editorial) |
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| Title | The alkali feldspars of the Ardara pluton, Donegal |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | Hall, A. | Author |
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| Year | 1966 (March) | Volume | 35 |
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| Issue | 273 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_35/35-273-693.pdf+ |
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| DOI | doi:10.1180/minmag.1966.035.273.04Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 5945 | Long-form Identifier | mindat:1:5:5945:3 |
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| GUID | 0 |
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| Full Reference | Hall, A. (1966) The alkali feldspars of the Ardara pluton, Donegal. Mineralogical Magazine and Journal of the Mineralogical Society, 35 (273) 693-703 doi:10.1180/minmag.1966.035.273.04 |
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| Plain Text | Hall, A. (1966) The alkali feldspars of the Ardara pluton, Donegal. Mineralogical Magazine and Journal of the Mineralogical Society, 35 (273) 693-703 doi:10.1180/minmag.1966.035.273.04 |
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| In | (1965) Mineralogical Magazine Vol. 35 (273) Mineralogical Society |
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| Abstract/Notes | SummaryThe alkali feldspars in the Ardara pluton are microcline- and orthoclase-microperthites. Their compositions have been determined by the 20 X-ray method, both before and after homogenization. The bulk compositions are very rich in potassium as a result of postmagmatic recrystallization of the alkali feldspar. There is no significant variation in either the bulk composition or the composition of the potassic phase in different parts of the intrusion. The structural state of the feldspars has been studied by measurement of 2V and obliquity of the potassic phases, and the reciprocal lattice angles α* and γ* of the potassic and sodic phases in selected crystals. Most of the specimens contain near-maximum microcline, but there is a decrease in the obliquity of the potassic phase at the eastern end of the intrusion. This can be related to the subsequent intrusion of the Main Donegal Granite. |
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