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Materials
- Obsidian71 objects
- Chert30 objects
- Basalt (basic igneous rock)8 objects
- Flint (rock)3 objects
- Quartz (mineral)3 objects
- Andesite2 objects
- Opal glass2 objects
- Quartzite2 objects
- Chalcedony1 objects
- Diabase (dolerite)1 objects
- Jasper1 objects
- Shale1 objects