igneous
Tuff
Volcanic Tuff
AI-generated identification · may be incorrectHardness ranges from 3 to 4 on the Mohs scale. Colors include gray, white, beige, and pink with a dull or earthy luster and a porous, fragmental crystal structure.
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Physical properties
Hardness ranges from 3 to 4 on the Mohs scale. Colors include gray, white, beige, and pink with a dull or earthy luster and a porous, fragmental crystal structure.
Formation & geological history
Formed from the consolidation of volcanic ash and other pyroclastic material ejected during volcanic eruptions.
Uses & applications
Widely used as a lightweight building stone, in cement production, and for decorative landscaping blocks.
Geological facts
Tuff has been utilized in construction since antiquity, famously used to carve the Moai statues on Easter Island.
Field identification & locations
Easily identified by its lightweight, porous texture containing visible volcanic ash and rock fragments; found worldwide near volcanic regions.
