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Materials
- Obsidian1,379 objects
- Basalt (basic igneous rock)107 objects
- Opal glass22 objects
- Chert2 objects
- Jasper2 objects
- Opal2 objects
- Granite (rock)1 objects
- Ocher (pigment)1 objects
- Petrified wood1 objects
- Porphyry1 objects
- Slate (rock)1 objects