igneous
Tuff
Volcanic Tuff
AI-generated identification · may be incorrectHardness ranges from 3 to 4 on the Mohs scale. Colors include white, gray, beige, and pink, with a dull to earthy luster.
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Physical properties
Hardness ranges from 3 to 4 on the Mohs scale. Colors include white, gray, beige, and pink, with a dull to earthy luster.
Formation & geological history
Formed from the consolidation of volcanic ash and pyroclastic debris ejected during explosive volcanic eruptions.
Uses & applications
Used historically as a lightweight building and decorative stone, and occasionally in the production of cement.
Geological facts
Tuff is relatively soft and easy to carve, making it the material used for the famous moai statues on Easter Island.
Field identification & locations
Identify by its light, porous texture containing visible volcanic ash and rock fragments; found worldwide near active or ancient volcanic regions.
