| 21. | Microlites in the Lake unit rocks include biotite, plagioclase and spinel.
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| 22. | Dacites have biotite, hornblende, plagioclase and quartz phenocrysts.
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| 23. | Basanites contain more olivine and less plagioclase / pyroxene phenocrysts.
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| 24. | Minerals in its rocks include amphibole, biotite, orthopyroxene and plagioclase.
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| 25. | The rocks contain phenocrysts of clinopyroxene, hornblende and plagioclase.
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| 26. | It has been observed in thin section that baddeleyite forms within plagioclase grains.
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| 27. | San Antonio lavas contain large plagioclase xenocrystals and xenoliths.
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| 28. | This was not sufficient to convert plagioclase to albite.
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| 29. | Other minerals include anhydrite, augite, and plagioclase.
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| 30. | The lavas formed have been plagioclase ultraphyric basalts with large 4 cm crystals.
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