ROCKS AND MINERALS
1. Differentiate between the terms “rock” and “mineral”
2. Briefly summarise the following characteristics as they apply to mineral identification:
Hardness:
Streak:
Lustre:
Specific Gravity:
Cleavage:
Texture:
3. Describe generally how igneous rocks are formed. Include the names of 3 minerals commonly found in
igneous rocks.
4. The physical texture of a rock can be dependent on crystal size. Identify and briefly explain the factor that
determines crystal size.
5. Briefly describe Sedimentary rock composition:
6. Sedimentary rocks are often formed in layers. How are age and rock layer related?
7. Complete the table below as it applies to Clastic and Chemical Sedimentary rocks:
Clastic Sedimentary Rock
Chemical Sedimentary Rock
Formation
Mechanism:
Example 1 and brief
description:
Example 2 and brief
description:
Example 3 and brief
description
8. Describe how Metamorphic rocks are formed. Include in your description 2 factors which may be involved in
the process:
9. Distinguish between Foliated and Non-foliated metamorphic rocks. Identify 3 examples of each.