Mineralogy exercises
- quartz and iron oxide in tiger eye
- distribution of iron oxide in tiger eye
- Cristobalite in obsidian
- augite problem 1
- augite problem 2
- augite problem 3
- quartz fibers in chalcedony
- olivine problem 1
- olivine problem 2
- Riebeckite hand specimen
- Perthite
- Plagioclase problem 1
- Plagioclase problem 2
- Plagioclase problem 3
- distribution of iron oxide in tiger eye