Feldspar - Definition
feldspar
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]
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]