Across
- 3. the hardest natural mineral.
- 6. kitchen slabs are made out of ____.
- 7. a soft rock.
- 8. the properties of minerals are - hardness, colour and ____.
Down
- 1. remains or impressions of plants and animals in rocks, that lived long ago.
- 2. digging useful minerals out of the ground is called ___.
- 4. the building blocks of rocks.
- 5. the softest natural mineral.