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Materials
- Basalt (basic igneous rock)42 objects
- Granite (rock)37 objects
- Quartzite36 objects
- Sandstone12 objects
- Lava2 objects
- Rhyolite2 objects
- Tufa2 objects
- Diabase (dolerite)1 objects
- Limestone1 objects
- Porphyry1 objects
- Sandstone (sandstone, shaped by pecking)1 objects