Kinoite
A variety of Minerals

What is Kinoite?
Kinoite (Ca2Cu2Si3O8(OH)4 or Ca2Cu2Si3O10·2H2O) is a light blue copper silicate mineral. It is somewhat scarce. It has a monoclinic crystal system, vitreous luster, and is transparent to translucent. It can be found in the Santa Rita Mountains, the Christmas Mine at Christmas, Arizona and a few other copper mines. Kinoite is popular with mineral collectors. Kinoite was named upon its discovery in 1970 after the pioneer Jesuit missionary Padre Eusebio Kino who worked in Arizona, Sonora and Baja California.
Uses & Applications
Kinoite is primarily valued as a mineral specimen for collectors due to its attractive light blue color and rarity. It has no significant commercial applications but is prized for its aesthetic appeal in mineral collections.
Optical Properties
- Refractive Index
- 1.558-1.573
- Pleochroism
- Weak
- Optical Character
- Biaxial positive
- Dispersion
- 0.018
Discover Values
This stone excels in rarity.
Kinoite Market Value Calculator
Estimate the market value of Kinoite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Kinoite Localities Map
See where Kinoite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Named after Padre Eusebio Kino, a Jesuit missionary who worked in Arizona and Sonora. The mineral represents the intersection of geological beauty and historical significance in the American Southwest.
Geochemistry
Forms as a secondary mineral in oxidized copper deposits through hydrothermal alteration. The characteristic blue color comes from copper content, and it typically associates with other copper silicates in mine environments.
Quick Facts
Physical Properties
- Color
- Transparent deep blue
- Hardness (Mohs)
- 2.5
- Density
- 3.193 g/cm³
Chemical Properties
- Chemical Formula
- Ca2Cu2(H2O)2[Si3O10]
- Elements
- Ca, Cu, H, O, Si

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