igneous
Pumice
Pumice
AI-generated identification · may be incorrectHardness 6 on Mohs scale, highly vesicular, white to light gray color, dull luster, specific gravity less than 1.0 allowing it to float on water.
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Physical properties
Hardness 6 on Mohs scale, highly vesicular, white to light gray color, dull luster, specific gravity less than 1.0 allowing it to float on water.
Formation & geological history
Formed from the rapid cooling of gas-rich felsic lava during explosive volcanic eruptions.
Uses & applications
Used in lightweight concrete, landscaping, abrasive personal care products, and horticulture.
Geological facts
Pumice is the only rock known to float on water due to its trapped gas bubbles forming a glass foam.
Field identification & locations
Identified by its extremely low density, pale color, and rough, frothy texture.
