Mineralpedia Details for Aheylite
Aheylite
Named in honor of Allen V. Heyl, an economic geologist with the United States Geological Suvey. Aheylite is a rare mineral that can be found at the type locality at the Huanuni mine in the Oruro Department of Bolivia, at Bali Lo in the Ashburton Downs of Western Australia, Australia, and possibly at the Les Montmins mine in Auvergne, France. At the type locality, Aheylite is found as a hydrothermal mineral in the base metal tin deposit in association with variscite, sphalerite, vivianite, wavellite, cassiterite, pyrite, and quartz.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/aheylite.pdf
- Formula
- Fe2+Al6(PO4)4(OH)8ยท4H2O
- Crystal System
- Triclinic
- Crystal Habit
- Felted, Aggregates, Botryoidal
- Cleavage
- Good, None, None
- Luster
- Vitreous - Dull
- Color
- blue green
- Streak
- greenish white
- Class
- Triclinic - Pinacoidal
- Fracture
- Hackly
- Hardness
- 5-6
- WebMineral
- View Aheylite
- Mindat
- View Aheylite
Aheylite from Huanuni mine, Dalance Prov., Oruro dept., Bolivia
Light grey or slightly bluish "balls" of Aheylite to about 1mm. Aheylite is a very rare zinc phosphate found in only 3 worldwide localities.
Light bluish spheres to 1mm associated with white, bladed Wavellite crystals.
Aheylite from Bali Lo, Ashburton Downs, Western Australia, Australia
Green to light green Aheylite occuring just as described in Handbook of Mineralogy: "in felted and matted aggregates to form botryoidal, spherulitic masses; radiating, prismatic groups.
