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Materials
- Basalt (basic igneous rock)133 objects
- Quartzite92 objects
- Chert53 objects
- Obsidian15 objects
- Quartz (mineral)8 objects
- Flint (rock)3 objects
- Sandstone3 objects
- Limestone1 objects
- Mudstone1 objects
- Opal1 objects
- Schist1 objects