Zunyite

A variety of Minerals

Zunyite specimen - rock identification

What is Zunyite?

Zunyite is a sorosilicate mineral, Al13Si5O20(OH,F)18Cl, composed of aluminium, silicon, hydrogen, chlorine, oxygen, and fluorine.

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Zunyite Localities Map

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

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North ZoneCentral RidgeSouth Basin

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The Meaning

Although zunyite was officially discovered as late as 1884, tiny crystals have been located in pots that were placed within excavated graves in the Mayan city of Uaxactun in Guatamala. It is thought that ancient peoples believed zunyite was a worthy offering to the dead as it was rare and from far away. Zunyite is also thought to have been used as a paint in Mayan culture.

Key Characteristics

Formation of Zunyite

Zunyite occurs in highly aluminous shales and hydrothermally altered volcanic rocks. It occurs in association with pyrophyllite, kaolinite, alunite, diaspore, rutile, pyrite, hematite and quartz. It was discovered in 1884, and named for its discovery site, the Zuni mine in the Silverton District, San Juan County, Colorado.

More Images

Zunyite specimen 2
© Robert M. Lavinsky

Quick Facts

Physical Properties

Color
Colourless, grey, white, flesh-red
Hardness (Mohs)
7
Density
2.88 g/cm³
Streak
White

Chemical Properties

Chemical Formula
Al13Si5O20(OH,F)18Cl
Elements
Al, Cl, F, H, O, Si
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