felspar

from WordNet (r) 3.0 (2006)

felspar
    n 1: any of a group of hard crystalline minerals that consist of
         aluminum silicates of potassium or sodium or calcium or
         barium [syn: {feldspar}, {felspar}]

from The Collaborative International Dictionary of English v.0.48

Felspar \Fel"spar`\, Felspath \Fel"spath`\, n. (Min.)
   See {Feldspar}.
   [1913 Webster]

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