A fibrous, lavender-blue or greenish mineral, a sodium metal silicate that is used as a commercial kind of asbestos.
A fibrous, blue-green mineral that is an asbestos-like type of riebeckite.
A mineral occuring in silky fibers of a lavender blue color. It is related to hornblende and is basically a silicate of iron and soft drink; -- labeled as in addition blue asbestus. A silicified kind, where the materials penetrating quartz tend to be changed to oxide of iron, could be the yellow-brown tiger-eye associated with jewelers.
A mineral consisting principally of silicate of iron and salt, occurring in asbestos-like materials of a delicate blue shade, also massive, in Griqualand, Southern Africa, and in the Vosges hills of France and Germany. Also known as blue asbestos.