Materials
- Basalt (basic igneous rock)41 objects
- Quartzite9 objects
- Chert8 objects
- Slate (rock)6 objects
- Obsidian5 objects
- Hornfels3 objects
- Quartz (mineral)2 objects
- Granite (rock)1 objects
- Porphyry1 objects
- Sandstone1 objects
- Stone (worked rock)1 objects