Mineralpedia Details for Ashburtonite
Ashburtonite
Named for the type locality at the Ashburton Downs in a copper deposit in Western Australia, Australia. The only additional locality for Ashburtonite is at the Tonopah-Belmont mine in Arizona, USA. It occurs at the type locality at a weathered shear zone that cuts through shale and greywacke, and forms as an alteration product of galena and likely chalcopyrite. Associated minerals include diaboleite, duftite, beudantite, caledonite, plattnerite, cerussite, malachite, and brochantite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/ashburtonite.pdf
- Formula
- HCu4Pb4Si4O12(HCO3)4(OH)4Cl
- Crystal System
- Tetragonal
- Crystal Habit
- Prismatic
- Cleavage
- None, None, None
- Luster
- Vitreous (Glassy)
- Color
- blue
- Streak
- light blue
- Class
- Tetragonal - Dipyramidal
- Fracture
- Brittle - Conchoidal
- Hardness
- -
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Ashburtonite from Ashburton Downs, Western Australia, Australia
Sky blue earthy crust.
Click thumbnail images for larger view.
