A mineral which is a sulphide of silver and antimony, occurring as orange-red tabular or needle-like crystals; also called fire-blende.
Formula Ag₃SbS₃; dimorphous with pyrargyrite. Crystal system: monoclinic.
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From pyro- + ancient Greek στιλπνός shining + -ite.