Answer: feldspar

AnswerCrossword Clue
FELDSPAROrthoclase or albite
FELDSPARIgneous rock
FELDSPARCrystalline mineral
FELDSPARMineral in granite
FELDSPARCrystalline mineral.
FELDSPARCrystal-like mineral
FELDSPARRock-forming mineral
FELDSPARIgneous rock constituent
FELDSPARImportant constituent of igneous rocks
FELDSPARMineral that crystallizes from magma
FELDSPARMost of the earth's crust
FELDSPAR60% of the earth's outer crust
feldsparany of a group of minerals, principally aluminosilicates of potassium, sodium, and calcium, characterized by two cleavages at nearly right angles: one of the most important constituents of igneous rocks
feldspara family of crystalline minerals, also FELSPAR