See Also: feldspar(dictionary)
feldspar(encyclopedia)
feldspar(dictionary)
alkali feldspar(encyclopedia)

feldspar (iou)



feldspar noun. . M18.
[Alt. of German Feldspat(h), from Feld FIELD noun + Spat(h) SPATH with substitution of synonym. SPAR noun3; fels- by false etym. from German Fels rock.]
Mineralogy. Any of a large class of monoclinic or triclinic aluminosilicate minerals which are mostly colourless or pink and include many common rock-forming minerals.
aventurine feldspar: see AVENTURINE 2.