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Showing results for alkali feldspar. Search instead for labrador feldspar.

alkali feldspar

American  

noun

  1. Geology. any type of feldspar that contains more potassium than calcium.


alkali feldspar Scientific  
  1. Any of several feldspar minerals containing alkali metals and little calcium. Plagioclase, orthoclase and microcline are alkali feldspars.


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