Across
- 3. obtained from their ores through extraction and purification.
- 4. Impurities of sand in an ore are called?
- 6. mineral often found in the shells of marine creatures
- 8. carbon mineral used in pencils
- 9. process through which minerals are obtained from the earth
Down
- 1. Minerals with high proportion of metals
- 2. magnetic mineral often found in rocks
- 3. rocks are mainly made up of?
- 5. Gypsum- a mineral is formed through the process of?
- 7. hard, precious gemstone formed under high pressure