Kinoite
Mineral Ca2Cu2Si3O10·2H2O
About it
Deep azure-blue crystals and veinlets, a rare copper-calcium silicate from Arizona's Christmas mine; named for the Jesuit missionary Eusebio Kino.
- Type
- Mineral
- Group
- Silicate (sorosilicate)
- Formula
- Ca2Cu2Si3O10·2H2O
- Hardness (Mohs)
- 4–5
- Specific gravity
- 3.13–3.19
- Lustre
- vitreous (glassy)
- Crystal system
- Monoclinic
- Colours
- deep azure blue
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.