Question

Give the chemical formulae of the following naturally occuring ores:

1. Cryolite

2. Galena

3. Corund um

4. Dolomite

5. Zincite

6. Malachite

7. Cinnabar

8. Gypsum

9. **** silver

10. Epsom salt

11. Haematite

12. Bauxite

Answer 1

1. Na3AlF6

2. PbS

3. AI2O3

4. CaCO3.MgCO3

5. ZnO

6. CuC O3.Cu(OH)2

7. HgS

8. CaSO4.2H2O

9. AgCl

10. MgS O4. 7H2O

11. Fe2O3

12. Al 2O3.2H2O