Wiktionary
uchucchacuaite
n. (context mineralogy English) A mineral with the chemical formula (AgMnPb3Sb5S12), often found in hydrothermal deposits.
Wikipedia
Uchucchacuaite
Uchucchacuaite ( Ag Mn Pb Sb S) is a rare sulfosalt mineral found in hydrothermal deposits.
It was first described in 1984 for an occurrence in the Uchucchacua Mine, Oyon Province, Lima Department, Peru and named for the mine. It has also been reported from mines in Hokkaido, Japan. It occurs with alabandite, galena, benavidesite, sphalerite, pyrite, pyrrhotite and arsenopyrite in the Peru deposit.