Difference between revisions of "Alkali feldspar"
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== Description == | == Description == | ||
| − | A group of [ | + | A group of [[feldspar|feldspar]] minerals that are rich in the [[alkali|alkali]] elements of [[potassium|potassium]] and [[sodium|sodium]]. Alkali-rich feldspars are: [[microcline|microcline]], [[orthoclase|orthoclase]], [[anorthoclase|anorthoclase]], [[sanidine|sanidine]], and [[albite|albite]]. They contain less than 5% [[anorthite|anorthite]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 10:41, 7 January 2014
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.)
Authority
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009.