Alkali feldspar

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Description

A group of feldspar minerals that are rich in the alkali elements of potassium and sodium. Alkali-rich feldspars are: microcline, orthoclase, anorthoclase, sanidine, and albite. They contain less than 5% anorthite.

Synonyms and Related Terms

feldspath alcalin (Fr.); feldspato alcalino (Port.)

Resources and Citations

  • José Delgado Rodrigues, LNEC, 2009, submitted information.
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