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feldspar: Meaning and Definition of
feld•spar
Pronunciation: (feld'spär", fel'-), [key]
— n.
- any 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.
See also:
- feldspar (Thesaurus)
