| Some larger grains also occur, and most grains are slightly perthitic showing variable degrees of transformation from orthoclase to microcline. |
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| Closer to the contact microcline is replaced by sanidine, and perthitic exsolution in detrital alkali feldspar begins to disappear. |
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| Feldspar is dominated by microcline, but plagioclase and perthitic feldspar are also present. |
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| Most of the intrusion comprises a coarse-grained, pink gneissic granite containing numerous augen of recrystallized perthitic orthoclase up to 1.25 cm across. |
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| Lee MR, Parsons I Microtextural controls of weathering of perthitic alkali feldspars. |
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| The feldspar fraction is dominantly altered orthoclase feldspar and perthitic ortho-clase feldspar with traces of microcline and plagioclase. |
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| Lee MR, Parsons I Microtextural controls on weathering of perthitic alkali feldspars. |
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| The main minerals in the sample are quartz, perthitic orthoclase, plagioclase with sericite, epidote and chlorite. |
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| Its amount increases abruptly close to the contacts of the anorthosites with silicic rocks, where perthitic alkali feldspar partly replaces plagioclase. |
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| Perthitic and myrmekitic intergrowths are observed in few sections. |
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