Kinoite

A variety of Minerals

Rare
Kinoite specimen - rock identification

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

Rarity
4.6out of 5.0
92%
Excellent
Popularity
3.2out of 5.0
64%
Beauty
4.1out of 5.0
82%
Cultural Value
3.8out of 5.0
76%
Collection Value
4.3out of 5.0
86%
Perfect for rare stone collectors

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.

Preview only. Full pricing comps and valuation report in the app.

Kinoite Localities Map

See where Kinoite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

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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