Category Tellurate minerals Formula mass 1,542.46 g/mol | Strunz classification 7.DE.25 | |
Formula
(repeating unit) Cu5Zn3(TeO4)4(OH)8•7H2O Crystal system Triclinic
Unknown space group Unit cell a = 8.794 Å, b = 9.996 Å
c = 5.66 Å; α = 104.1°
β = 90.066°, γ = 96.3333°; Z = 1 | ||
Utahite is an extremely rare secondary copper zinc tellurate mineral found as a product of oxidation. Its chemical formula is Cu5Zn3(Te6+O4)4(OH)8•7H2O.
It was first described in 1997 for an occurrence in the Centennial Eureka mine, one mile southeast of Eureka, Tintic District, Juab County, Utah, US (type locality). The discovery site was a mine dump of a hydrothermal ore deposit where it occurs with cesbronite and quartz. It has also been reported from the Empire Mine in the Tombstone District of Cochise County, Arizona.
References
Utahite Wikipedia(Text) CC BY-SA