Mineralpedia Details for Utahite
Utahite
Named for the state of Utah, USA where the mineral was discovered at its type locality, the Centennial Eureka mine. Utahite can be found only in the United States in the mine dumps as a rare secondary mineral from the oxidized zone of Cu-Zn-Te bearing hydrothermal deposits. Utahite has also been found at the Empire mine in Arizona, USA.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/utahite.pdf
- Formula
- Cu5Zn3(TeO4)4(OH)8ยท7H2O
- Crystal System
- Triclinic
- Crystal Habit
- Aggregates, Prismatic
- Cleavage
- None, None, None
- Luster
- Vitreous - Adamantine
- Color
- pale blue, greenish blue
- Streak
- pale blue
- Class
- Triclinic
- Fracture
- Brittle - Uneven
- Hardness
- 4-5
- WebMineral
- View Utahite
- Mindat
- View Utahite
Utahite from Centennial Eureka mine, Tintic dist., Juab Co., Utah, United States
Tiny bladed blue crystal groups to 0.3mm with an unknown lime spheroidal mineral.
Type Specimen. Platy single crystals to about 0.75mm.
Click thumbnail images for larger view.
