Materials
Select all that apply:
- Obsidian1,511 objects
- Flint (rock)144 objects
- Chert136 objects
- Granite (rock)59 objects
- Acetate film52 objects
- Sandstone50 objects
- Soapstone (metamorphic rock)39 objects
- Plate glass36 objects
- Quartzite25 objects
- Rhyolite20 objects
- Basalt (basic igneous rock)11 objects
- Quartz (mineral)11 objects
- Schist5 objects
- Petrified wood4 objects
- Agate (chalcedony)3 objects
- Diabase (dolerite)3 objects
- Jasper3 objects
- Hornfels2 objects
- Lava2 objects
- Selenite2 objects