Stromeyerite

Stromeyerite
General
CategorySulfide minerals
FormulaAgCuS
IMA symbolSmy
Strunz classification2.BA.40
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupCmcm

Stromeyerite or copper-silver glance:223 is a sulfide mineral of copper and silver, with the chemical formula AgCuS. It forms opaque blue grey to dark blue orthorhombic crystals.

It was discovered in 1832 in Central Bohemia Region, Czech Republic, and named after the German chemist, Friedrich Stromeyer who performed the first analysis of the mineral.