feldspar
/ˈfeldspɑː(r)/(亦作 felspar/ˈfelspɑː(r)/)
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长石（一种大量存在的造岩矿物）。
词源
mid 18th cent.: alteration of German Feldspat, Feldspath, from Feld 'field' + Spat, Spath 'spar' （see SPAR3 ）. The form felspar is by mistaken association with German Fels 'rock'.