feldspar
/ˈfɛldspɑː
/(also felspar)
noun [mass noun]
An abundant rock-forming mineral typically occurring as colourless or pale-coloured crystals and consisting of aluminosilicates of potassium, sodium, and calcium.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.
Origin
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'.
- pullable
- pull a boner
- pull a face (or faces)
- pull a fast one
- pull-along
- pull-and-push
- pull-apart
- pull-away
- pull-away boy
- pullback
- pull back (or pull someone/thing back)
- pull-bell
- pull-boat
- pull-bone
- pull cord
- pull-date
- pull-doo
- pull-down
- pulled bread
- dirtboarding
- dirt cheap
- dirt farm
- dirt farmer
- dirt-free
- dirtily