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Materials
- Basalt (basic igneous rock)225 objects
- Chert189 objects
- Quartzite41 objects
- Quartz (mineral)34 objects
- Flint (rock)27 objects
- Obsidian26 objects
- Limestone5 objects
- Chalcedony4 objects
- Mudstone3 objects
- Siliceous rock2 objects
- Glass (material)1 objects
- Sandstone1 objects