ELS

1. BY: SHULAMITE PANORINGAN
CHEMICAL
CHARACTERISTICS
OF MINERALS

2. Chemical Properties of minerals
show the presence and arrangement
of atoms in minerals. Using their
chemical properties, minerals are
identified by how they react to
certain substances.

3. 1. SILICATE CLASS
Largest group of minerals
• Contains silicon and oxygen,
with some aluminum,
magnesium, iron and calcium.

4. COMMON EXAMPLES
Olivine Pyroxene Amphibole
Muscovite Feldspar

5. 2. Carbonate Class
• Deposited in marine environment
• Shells of dead plankton
• Places with high evaporation rates

6. COMMON EXAMPLES
Aragonite Calcite Malachite

7. 3. Sulphate Class
• Where salty waters slowly evaporate
• Places with high evaporation rates
• Water sediments

8. COMMON EXAMPLES
Barite Gypsum Celestite

9. 4. Halide Class
• Contains natural salt
• In lakes, ponds, and other landlocked seas

10. Common Examples
Halite Flourite

11. 5. Oxide Class
• Most important class to human civilization
• Carry histories of changes in Earth’s magnetic field
• Precipitates close to Earth’s surface

12. Common Examples
Hematite Corundum

13. 6. Sulphide Class
• Contains most of the economically
significant minerals to man
• Includes copper, lead, and zinc

14. Common Examples
Acanthite Chalcocite

15. 7. Phosphate Class
• Important biological minerals
• Found in bones and teeth of animals (Phosphorous)

16. Common Examples
Turqouise Wavellite Apatite

17. 8. Element Class
•Contains pure native elements
•Usually metal
•Pure form

18. Common Examples
Gold Copper Bismuth