igneous
Lava Rock
Basalt (Vesicular)
AI-generated identification · may be incorrectHardness of 5-6 on the Mohs scale, typically dark gray to black in color with a dull luster and a highly porous, vesicular texture.
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Physical properties
Hardness of 5-6 on the Mohs scale, typically dark gray to black in color with a dull luster and a highly porous, vesicular texture.
Formation & geological history
Formed from gas-rich mafic lava that cools rapidly on the Earth's surface, allowing expanding gas bubbles to create cavities.
Uses & applications
Used widely in landscaping, barbecue grills, water filtration, and aromatherapy diffuser jewelry.
Geological facts
Due to its high porosity, vesicular basalt has a low specific gravity and can sometimes float on water.
Field identification & locations
Easily identified by its dark, sponge-like appearance and numerous tiny holes called vesicles; found globally near volcanic regions.
