Category:Obsidian samples from California

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Media in category "Obsidian samples from California"

The following 3 files are in this category, out of 3 total.

Cristobalite-Fayalite-Obsidian-254004.jpg 600 × 536; 79 KB
Cristobalite-Fayalite-Obsidian-254005.jpg 399 × 400; 31 KB
Cristobalite-Obsidian-280504.jpg 750 × 733; 56 KB

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