Rock Identifier
Moqui Marble (Hematite-Goethite Concretion) — mineral
mineral

Moqui Marble

Hematite-Goethite Concretion

Hardness of 5.5 to 6.5 on the Mohs scale, brown to reddish-brown or black color, metallic to earthy luster, botryoidal to spherical crystal structure, no cleavage, specific gravity around 4.5 to 5.3

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Physical properties

Hardness of 5.5 to 6.5 on the Mohs scale, brown to reddish-brown or black color, metallic to earthy luster, botryoidal to spherical crystal structure, no cleavage, specific gravity around 4.5 to 5.3

Formation & geological history

Formed through the precipitation of iron oxides around a nucleus of sand grains in sandstone formations, typically occurring in arid regions like the Navajo Sandstone of Utah

Uses & applications

Used in meditation, energy healing, and as a popular curiosity among rock and mineral collectors

Geological facts

Also known as shaman stones or living stones, they are believed by some native cultures to have spiritual properties and are found eroding out of sandstone cliffs in the American Southwest

Field identification & locations

Easily identified by their spherical or discoidal shape and rough, iron-rich sandstone exterior; found primarily in southern Utah, USA