1. Bell Work 9/13/2017
Get your comp book and add page 11 “What is a mineral?” to your table of contents.

2. Today’s Goals: Know how to tell if something is a mineral or not
Explain how color and luster are used to identify minerals

3. What is a mineral? CARD SORT

4. What is a mineral? Plates=silica and feldspar
Toaster=copper, iron, nickel, mica, chromium
Radio=aluminum, copper, gold, iron

6. What is a mineral?
To be a mineral, it must have all five of the criteria below.
They are NOT made by humans.
They have NEVER been alive and are NOT made up from plants or animals.
They are SOLIDS.
Each one is made of a particular mix of chemical elements.
Minerals “grow” as CRYSTALS because the elements that make them up are arranged in a certain way.

8. What do you think…
Object #1:
Wood No

9. What do you think…
Object #2:
Quartz
Yes

10. What do you think…
Object #3:
Plastic No

11. What do you think…
Object #4:
Graphite
Yes

12. What do you think…
Object #5:
Copper
Yes

13. What makes up a mineral?

14. Two Groups of Minerals:
Silicate Minerals Nonsilicate Minerals
silicon
Made up of ________ and __________
Does not contain __________ or oxygen
oxygen
silicon
Made up of Carbon, Fluorine, and _____________ 90
Make up ______% of Earth’s crust
Sulfur
Mica
Ex: Quartz, ________, and Feldspar
Ex: Native elements, ____________, Halides, Oxides, Sulfates, and Sulfides
Carbonates

15. Examples of Minerals:
Silicate Minerals

16. Examples of Minerals:
Nonsilicate Minerals

17. Properties of Minerals
How to identify minerals…
Color
Luster – the way a mineral reflects light (metallic or non-metallic)
Hardness – the ability of a mineral to resist being scratched
Streak – powder scraped off is the same color as the mineral
Density
Crystal shape – 6 basic crystal shapes
Cleavage and fracture – how a mineral breaks
Special properties – individual properties that individual minerals have (ex. Magnetite is naturally magnetic)

18. COLOR
Most minerals occur in more than one color.

19. LUSTER
Luster refers to how light is reflected from the surface of a mineral.
Is it shiny? Does it look oily?

20. Luster: Yes or No?
Yes

21. Luster: Yes or No?
Yes

22. Luster: Yes or No? No

23. Luster: Yes or No?
Yes (glassy luster)

24. Luster: Yes or No?
Yes

25. Luster: Yes or No? No

26. Why is color not the best property to use to identify a mineral?

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