6. Argillceous is smaller than arenaceous
- True
- False
7. Which of the following are igneous words?
- Clastic, crystalline, permeable
- Vesicular, phenocryst, anhedral
- Porphyritic, amygdaloidal, foliated
8. If an igneous rock is described as felsic and plutonic in terms of crystal size it must be...
- Granite
- Diorite
- Rhyolite
