cryoverkiltmilk:
jaubaius: Obsidian is a natural volcanic glass formed when lava high in silica cools quickly preventing crystal growth. Cracking open a cooled one with the geology boys.
jaubaius:
Obsidian is a natural volcanic glass formed when lava high in silica cools quickly preventing crystal growth.
Cracking open a cooled one with the geology boys.
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