igneous
Pumice
Pumice
AI-generated identification · may be incorrectHardness of 6 on Mohs scale, pale white to gray or yellowish color, dull to earthy luster, amorphous volcanic glass structure, specific gravity less than 1.
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Physical properties
Hardness of 6 on Mohs scale, pale white to gray or yellowish color, dull to earthy luster, amorphous volcanic glass structure, specific gravity less than 1.
Formation & geological history
Formed from explosive volcanic eruptions where gas-rich frothy felsic magma rapidly cools and depressurizes, trapping gas bubbles.
Uses & applications
Used in lightweight concrete, landscaping aggregates, abrasive personal care products, and stone-washing textiles.
Geological facts
Pumice is one of the only natural rocks that can float on water due to its high porosity and trapped gas vesicles.
Field identification & locations
Identified by its extremely low density, vesicular texture, and pale coloration; commonly found near active or historical volcanic regions worldwide.
