Cesbronite
Cesbronite is a copper tellurite mineral with the chemical formula Cu5(TeO3 )2(OH)6·2(H2O). It is colored green. Its crystals are orthorhombic dipyramidal. It has brittle fracture. Cesbronite is rated 3 on the Mohs Scale.
It is named after Fabien Cesbron (born 1938), a French mineralogist. It is found in the Bambollita ("La Oriental") mine in the Mexican state of Sonora. It also occurs in the Tombstone District of Cochise County, Arizona and the Tintic District of the East Tintic Mountains, Juab County, Utah.