Definition of feldspar in English:
- Quartz is associated most commonly with aegirine and potassium feldspar as well as zircon.
- Larger crystals of feldspar and quartz dominate the host rock.
- These granite dikes are composed almost totally of potassium feldspar and quartz.
Mid 18th century: alteration of German Feldspat, Feldspath, from Feld 'field' + Spat, Spath 'spar' (see spar3). The form felspar is by mistaken association with German Fels 'rock'.
Words that rhyme with feldspargrandpa • oompah
- US English dictionary
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