A usually brilliant blue or green variety of plagioclase feldspar that contains approximately equal proportions of sodium and calcium and occurs in silica-poor igneous rocks.
A variety of plagioclase with dark, iridescent colors.
A blue, gray, green, or brown triclinic mineral that is a variety of plagioclase feldspar. It occurs in igneous rocks.
Origin of labradorite
After the Labrador (Peninsula)