The scapolites are a group of rock-forming silicate minerals composed of aluminum, calcium, and sodium silicate with chlorine, carbonate and sulfate. It can form in prismatic crystals as well as columnar and massive habits. The crystals are transparent to translucent with a vitreous luster. Scapolite’s range of colors include white, grey, light green, blue, yellow, pink, violet and reddish. It is common in regional metamorphic rocks.