| 11. | Such components are quartz, feldspars, and lithic fragments.
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| 12. | The resulting intergrowth of the two feldspars is called perthite.
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| 13. | It can be found in igneous rocks containing potassium feldspar and plagioclase.
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| 14. | In the alkali feldspar almost pure albite domains are observed.
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| 15. | Feldspar is restricted to the miarolitic cavity infilled at a later period.
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| 16. | Feldspars are also subject to decomposition by water saturated with carbon dioxide.
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| 17. | This is a pearl indeed from the talk page of Antaeus Feldspar.
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| 18. | Mudrocks contain mostly clay minerals, and quartz and feldspars.
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| 19. | Other commercial minerals are clay, limestone, and feldspar.
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| 20. | In the feldspar, well crystallized menaccanite was sometimes observed.
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