igneous
Small porous rock (possibly vesicular volcanic rock)
Undetermined; possibly vesicular basalt or scoria
AI-generated identification · may be incorrectGray-brown, rough, and porous with visible pits; hardness, luster, and mineral composition cannot be determined reliably from the image.
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Physical properties
Gray-brown, rough, and porous with visible pits; hardness, luster, and mineral composition cannot be determined reliably from the image.
Formation & geological history
If volcanic, gas bubbles formed the pores as lava cooled; the specimen’s age and exact origin are unknown.
Uses & applications
No specific use can be established; small pieces may be kept as teaching or collection specimens.
Geological facts
The rounded pits resemble vesicles, cavities left by gas in cooling lava, but weathering or another rock type can produce a similar appearance.
Field identification & locations
A closer view and tests of hardness, density, and streak would help identify it; there is not enough visual detail to determine a locality.
