igneous
Possible basaltic rock or meteorite candidate
Likely vesicular basalt; meteorite identification cannot be confirmed visually
AI-generated identification · may be incorrectDark gray, fine-grained, dull to slightly vitreous, with numerous rounded pits or vesicles; likely hardness about 5–6, with no obvious metallic fusion crust or abundant metal visible.
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Physical properties
Dark gray, fine-grained, dull to slightly vitreous, with numerous rounded pits or vesicles; likely hardness about 5–6, with no obvious metallic fusion crust or abundant metal visible.
Formation & geological history
If basalt, it formed from rapidly cooled volcanic lava, commonly in the Cenozoic or older oceanic crust. A meteorite would require confirmation through density, magnetism, elemental testing, and an intact fusion crust.
Uses & applications
Basalt is widely used as crushed aggregate, paving stone, and construction material; ordinary pieces have little collector value. Confirmed meteorites can be significantly more valuable.
Geological facts
The porous texture strongly favors vesicular terrestrial volcanic rock, though weathered industrial slag is another possibility. The photograph alone cannot establish extraterrestrial origin.
Field identification & locations
Check for a strong magnet response, unusual density, a thin black fusion crust, flow texture, and streak; basalt commonly has tiny crystals and vesicles, while slag may show glassy surfaces or trapped bubbles. Do not rely on magnetism alone.
