Stannite is a mineral, a sulfide of copper, iron, and tin, in the category of thiostannates.

Zinc commonly occurs with the iron and trace germanium may be present.

It is found in tin-bearing, hydrothermal vein deposits occurring with chalcopyrite, sphalerite, tetrahedrite, arsenopyrite, pyrite, cassiterite, and wolframite.

[2] It is also known as bell metal ore as tin is an important constituent of bell-metal.

It is thought the exploitation of tin deposits in Cornwall led to an expansion in bell founding.