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pishuonlain [190]
3 years ago
15

The texture of obsidian is best described as glassy.Why does obsidian contain few or no mineral grains? by the way I put it unde

r physics because that's what it's labeled as on my side.
Physics
1 answer:
Brrunno [24]3 years ago
4 0

hi, so the material that would normally form mineral crystals does not have time to form a crystalline structure because of very rapid cooling after volcanically erupting into the air or onto the surface. Obsidian is a volcanic glass.

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