Shattuckite
Mineral Cu5(SiO3)4(OH)2
About it
Deep blue fibrous sprays and crusts in oxidized copper deposits; named for the Shattuck mine at Bisbee, Arizona, with fine sprays from Kaokoveld, Namibia, and the Congo.
- Type
- Mineral
- Group
- Silicate (inosilicate)
- Formula
- Cu5(SiO3)4(OH)2
- Hardness (Mohs)
- 3.5
- Specific gravity
- 4.1–4.11
- Streak
- light blue
- Lustre
- silky, vitreous (glassy)
- Crystal system
- Orthorhombic
- Colours
- deep blue, medium blue
- Transparency
- transparent, translucent, opaque
- Cleavage and fracture
- perfect in two directions
Typical values: real specimens vary. For more, see mindat.org.