mineral
Moqui Marble
Hematite-goethite concretion
AI-generated identification · may be incorrectHardness of 5.5 to 6.5, brown to black color, metallic to dull luster, spherical or disc-like concretion structure.
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Physical properties
Hardness of 5.5 to 6.5, brown to black color, metallic to dull luster, spherical or disc-like concretion structure.
Formation & geological history
Formed in Navajo Sandstone through the precipitation of iron oxides around a sand nucleus by groundwater over millions of years.
Uses & applications
Popular among rock collectors, used in metaphysical practices, and displayed as natural geological curiosities.
Geological facts
Also known as shaman stones or iron marbles, they are primarily found in the Navajo Sandstone formations of southern Utah.
Field identification & locations
Identify by their distinct spherical or disk shapes and reddish-brown iron-oxide crust; found eroding out of sandstone cliffs in the American Southwest.
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