1. MINERALS

2. DO NOW TASK
Look at the minerals and the tools inside the container. Based on their characteristics, attempt to place them (classify) in two separate groups!

3. We use rocks & minerals every day…

4. What are Minerals?

5. Minerals are: A single element  S = Sulfur or C = Graphite
Two or more elements chemically combined 
SiO2 = Quartz
NaCl = Halite

6. They are also: Naturally occurring- NOT man made!
Inorganic – Never once living
Crystalline – Definite internal arrangement of atoms!

7. MINERAL OR NOT?

9. How to Identify Minerals:

11. 1. Color
The COLOR of the mineral!!!!!

12. Sulfur

13. Olivine

14. Potassium Feldspar

15. Calcite comes in many different colors.

16. WHICH IS GOLD?

17. WHY DO I NEED MORE THAN COLOR??
Many minerals have similar colors!
A single mineral may have multiple colors!

18. White minerals:
Talc
Gypsum
Quartz
Calcite

19. 2. Streak Test
The color of the mineral fragments when ran across a ceramic plate

20. How is using a pencil a streak test?
What mineral is used in a pencil?

21. What is the difference?

22. 3. Luster Metallic Non-Metallic The way a mineral reflects light
Metallic or non-metallic
Metallic
Non-Metallic

23. 4. Moh’s Hardness Scale –
A minerals resistance to scratching

24. Which mineral will scratch the other?
GALENA (2.5) vs
OLIVINE (6.5)

25. 5. Cleaving vs. fracture –
The way a mineral breaks

26. If the mineral Cleaves:
It breaks along even planes.

28. If the mineral has fracture:
Broken pieces are jagged and irregular

29. 6. Hydrochloric (HCl) Acid test on Calcite
Fizzes on contact