empressite
/ˈɛmprɪsʌɪt/Mineralogy
noun
A rare mineral consisting of silver telluride, typically occurring as small bronze-coloured crystals.
- Chemical formula: AgTe. Crystal system: orthorhombic..
Origin
Early 20th century. From the name of the EmpressJosephine mine, Colorado, where the mineral was first found + -ite.