Materials
- Acetate film254 objects
- Plate glass230 objects
- Sandstone124 objects
- Basalt (basic igneous rock)76 objects
- Granite (rock)49 objects
- Rhyolite29 objects
- Quartzite16 objects
- Vesilic basalt16 objects
- Cellulose nitrate film11 objects
- Lava9 objects
- Schist9 objects
- Diabase (dolerite)7 objects
- Obsidian5 objects
- Soapstone (metamorphic rock)5 objects
- Andesite4 objects
- Tuff4 objects
- Stone (worked rock)3 objects
- Trachyte3 objects
- Volcanic ash3 objects
- Bone (material)2 objects