1. Identification of Minerals

2. Do Now
Which statement is best supported by the Moh’s Mineral Hardness Scale
A fingernail will scratch calcite, but not quartz
A fingernail will scratch quartz, but not calcite
A piece of glass can be scratched by quartz, but not by calcite
A piece of glass can be scratched by calcite, but not quartz.

3. Aim & Learning Target Aim: Learning Target:
What are different mineral groups?
How do we identify minerals based on the reference table?
Learning Target:
I can identify minerals by examining their luster, fracture, streak and hardness.
I can discriminate between multiple minerals using a dichotomous key of mineral characteristics

4. Definition of a “Mineral”
There are more than 4,000 different minerals on Earth.
Some are quite common, while others are very uncommon, and we don’t use them at all.
So, how do we define minerals?
Mineral: a naturally occurring, nonliving solid, with a definite structure and composition.
We will need to look at this definition a little more closely…

5. Chemical Composition
Each mineral has a unique chemical composition which makes it different from all other minerals.
Examples: Copper Cu
Gold Au
Halite NaCl
Quartz SiO2
Calcite CaCO3
Corundum Al2O3
Beryl Be3Al2Si6O18
Ruby Al2O3
Diamond C

6. How do we Identify Them: Pg 16

7. What are observations that we have of table?

8. It tells us about Luster Hardness Cleavage/fracture Common colors
Distinguishing characteristics
Uses
Composition
name

9. Often on the Regents
They test how well you can use the reference table.

10. example

11. Graphite use?

12. 1. Find use part of table 2. Block out the rest of the table 3
1. Find use part of table 2. Block out the rest of the table 3. Find graphite

13. example

14. example

15. 1. Find luster, characteristicspart of table 2. Block out the rest 3
1. Find luster, characteristicspart of table 2. Block out the rest 3. use process of elimination

16. example

17. example

18. 1. Find hardness, dolomite 2. Look back at the problem

19. Answer:

20. Dichotomous Key Practice

21. Dichotomous Key Practice
Mineral has: Metallic Luster, Fracture, Colored Streak, and is Hard

22. Dichotomous Key Practice
Mineral has: Metallic Luster, Fracture, Colored Streak, and is Hard

23. Dichotomous Key Practice
Mineral has: Non-metallic Luster, cleavage, colored streak, soft __________

24. Dichotomous Key Practice
Mineral has Non-metallic luster, fracture, white streak, hard
Mineral has: Non-metallic Luster, cleavage, colored streak, soft __________

25. Classwork: Textbook: Pages 50 – 54
Define the Vocabulary Listed on Page 50
Complete the Reading strategy listed on Page 50