8 Color White, colorless, cream, light yellow, light blue, light green, pale red, light brown, gray. Some Albite is iridescent . Crystals are usually flat and bladed , and often in compact groupings. Also occurs as tall prismatic and short, stubby , tabular crystals. These crystals are usually in groupings, and rarely occur singly on a matrix .
Crystal twins are common.
Other forms are grainy , massive , columnar , and rosette . Crystals are sometimes striated . About Albite belongs to the Plagioclase Feldspar group , an isomorphous solid solution series . Albite is one end member, containing sodium and no calcium. The other end member, Anorthite , contains calcium and no sodium.