igneous
Pumice
Pumice
AI-generated identification · may be incorrectHardness 6 on Mohs scale, pale gray to cream color, vitreous to dull luster, extremely lightweight and vesicular structure.
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Physical properties
Hardness 6 on Mohs scale, pale gray to cream color, vitreous to dull luster, extremely lightweight and vesicular structure.
Formation & geological history
Formed from explosive volcanic eruptions where gas-rich frothy felsic lava cools rapidly, trapping gas bubbles.
Uses & applications
Used in abrasive products, lightweight concrete aggregates, landscaping, and personal care pumice stones.
Geological facts
Pumice is one of the only rocks that can float on water due to its high porosity.
Field identification & locations
Easily identified by its extremely low density, light color, and abundance of small gas cavities; found worldwide near volcanic regions.
