Color ranges from light beige to yellow, light yellow-brown and bronze to silvery. Luster is vitreous.
Fracture is uneven to splintery.
Hardness is 3 - 4. Associated Minerals include aegirine, albite, analcime, calcio-ancylite, calcite, catapleiite, epididymite, fluorite, genthelvite, kupletskite, microcline, natrolite, pyrochlore, rhodochrosite and wurtzite. Distinguishing Features the crystal habit, color and pleochroism.