igneous
Pumice
Volcanic Glass / Pumice
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, highly vesicular texture, white to gray or yellowish color, and vitreous to dull luster.
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Physical properties
Hardness of 6 on the Mohs scale, highly vesicular texture, white to gray or yellowish color, and vitreous to dull luster.
Formation & geological history
Formed from explosive volcanic eruptions where gas-rich frothy lava cools rapidly, trapping gas bubbles.
Uses & applications
Used widely in lightweight construction aggregates, abrasive soaps, personal care pumice stones, and horticulture.
Geological facts
Pumice is one of the few geological materials with a specific gravity low enough to float on water.
Field identification & locations
Easily identified by its extremely low weight and abundance of gas vesicles. Found near volcanic arcs worldwide.
