Stibnite in Quartz, from Knipe Mine, Hare Hill, New Cumnock, East Ayrshire, Scotland (REF:RSB3)

Stibnite, sometimes called antimonite, is a sulphide mineral. Forms in masses, columns, blades, and needle-like and prismatic crystals.

The name is from the Greek στίβι stibi through the Latin stibium as the old name for the mineral and the element antimony.