Rock Identifier
Moqui Marquee Concretion (Iron Oxide Concretion (Sandstone with Hematite/Goethite)) — sedimentary
sedimentary

Moqui Marquee Concretion

Iron Oxide Concretion (Sandstone with Hematite/Goethite)

AI-generated identification · may be incorrect

Hardness of 5.5 to 7 on the Mohs scale, brown to reddish-black color, metallic to earthy luster, amorphous or spherical crystal structure, and high specific gravity due to iron content.

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Physical properties

Hardness of 5.5 to 7 on the Mohs scale, brown to reddish-black color, metallic to earthy luster, amorphous or spherical crystal structure, and high specific gravity due to iron content.

Formation & geological history

Formed in ancient sandstone formations through the groundwater precipitation of iron minerals around a nucleus, typically dating back millions of years.

Uses & applications

Popular in mineral collecting, metaphysical healing practices, and as decorative display specimens.

Geological facts

Also known as Navajo cherries, these spherical concretions weather out of the Navajo Sandstone in Utah and resemble marbles.

Field identification & locations

Found weathering out of sandstone cliffs in the American Southwest, easily identified by their spherical shape and dark iron-rich shell.

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