scapolite

Any of a series of variously colored, often fluorescent mineral silicates of aluminum, calcium, and sodium.

One of a group of minerals, silicates of aluminium and calcium, with sometimes sodium, also often containing chlorin in small amount.

A grayish white mineral occuring in tetragonal crystals and in cleavable masses. It is essentially a silicate of alumina and soda.

Any of several mixed sodium and calcium aluminosilicates which also contain chloride, carbonate and sulfate and are found in metamorphic rocks