Materials
Select all that apply:
- Basalt (basic igneous rock)44 objects
- Acetate film19 objects
- Plate glass17 objects
- Vesilic basalt15 objects
- Metate10 objects
- Sandstone8 objects
- Granite (rock)5 objects
- Obsidian3 objects
- Acetate film (35mm color transparency)2 objects
- Lava2 objects
- Quartzite2 objects
- Andesite1 objects
- Ceramic (material)1 objects
- Chert1 objects
- Clay1 objects
- Granodiorite1 objects
- Porphyry1 objects
- Schist1 objects