mineral
Moqui Marble
Hematite-Goethite Concretion (Fe2O3 / FeO(OH))
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale, brownish to dark reddish-black color, metallic to earthy luster, amorphous or microcrystalline internal crystal structure, specific gravity around 4.5 to 5.2.
Identified More mineral →
Explore Moqui Marble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, brownish to dark reddish-black color, metallic to earthy luster, amorphous or microcrystalline internal crystal structure, specific gravity around 4.5 to 5.2.
Formation & geological history
Formed through ground water movement precipitating iron around a sand nucleus in sandstone formations, typically weathering out of the Navajo Sandstone in Utah.
Uses & applications
Popular among mineral collectors, used for meditation and metaphysical purposes, and studied for geological concretion processes.
Geological facts
Also known as shaman stones or iron marbles, they are concretions that form spherical or disc-like shapes, heavily sought after in southwestern USA.
Field identification & locations
Found predominantly in southern Utah; identified by their spherical, button-like or marble-like brown/black exterior and concentric iron shell with a sandy interior.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary