Papagoite
Mineral CaCuAlSi2O6(OH)3
About it
Intense blue crusts and inclusions, most often seen inside quartz from Messina, South Africa; first found at Ajo, Arizona, and named for the Papago (Tohono O'odham) people.
- Type
- Mineral
- Group
- Silicate (cyclosilicate)
- Formula
- CaCuAlSi2O6(OH)3
- Hardness (Mohs)
- 5–5.5
- Specific gravity
- 3.25
- Lustre
- vitreous (glassy)
- Crystal system
- Monoclinic
- Colours
- cerulean blue
- Transparency
- transparent, translucent
- Cleavage and fracture
- good in one direction
Typical values: real specimens vary. For more, see mindat.org.