ˈstaˌnīt noun
( -s )
Etymology: German stannit, from stann- + -it -ite
1. : salt formed in solution when a stannous salt is treated with excess alkali
2.
[ stann- + -ite ]
: a mineral Cu 2 FeSnS consisting of a steel-gray or iron-black sulfide of copper, iron, and tin, of a metallic luster occurring in granular masses — called also tin pyrites (hardness 4, specific gravity 4.3-4.52)