1. Friday Assignments due:
Chapter 2 and 3 vocabulary
Any worksheets from this week (final day for 80% credit)
Article Report (final day for 80% credit)
Access your webmail: vcs\first.last
me:

2. Properties of Minerals
On Monday we have a mineral identification lab.
What is mineral identification?
_____________the name of a mineral based on its ________________.
In order to do that, today we will learn the properties of minerals!
___________and ______________determine the properties of a mineral.

3. 2.3 Properties of Minerals
Color
2.3 Properties of Minerals
Small amounts of different elements can give the ________mineral __________colors.
Color is __________________to identify a mineral as the same mineral can have different colors and many minerals can have the same colors.

4. 2.3 Properties of Minerals
Streak
2.3 Properties of Minerals
Streak is the ____________of a mineral in its ______________form.
To see the powdered form you “streak” the element onto a streaking plate.

5. 2.3 Properties of Minerals
Luster
2.3 Properties of Minerals
Luster is used to describe how _______ ____________ from the surface of a mineral.
If you hold up the mineral to the light is it:
Shiny
Dull
___________
Crystal-like
____________

6. Pyrite (Fool’s Gold) Displays Metallic Luster.

7. 2.3 Properties of Minerals
Crystal Form
2.3 Properties of Minerals
Crystal form is the visible expression of a mineral’s _________arrangement of ____________.
Did your sample develop in an open space? Can you see the crystal form?

8. Quartz Often Exhibits Good Crystal Form.

9. 2.3 Properties of Minerals
Hardness
2.3 Properties of Minerals
 Hardness is a measure of the _______ of a mineral to being ___________.
 ________scale consists of 10 minerals arranged from 10 (hardest) to 1 (softest).

10. Mohs Scale of Hardness

11. 2.3 Properties of Minerals
Hardness
2.3 Properties of Minerals
 On Monday you will measure if your sample is harder or softer than a penny.
 If my mineral leaves a mark on the penny, which is harder, the mineral or the penny?

12. 2.3 Properties of Minerals
Cleavage
2.3 Properties of Minerals
 Cleavage is the tendency of a mineral to cleave, or _______, along ______, even surfaces.

13. Mica Has Cleavage in One Direction

14. 2.3 Properties of Minerals
Fracture
2.3 Properties of Minerals
 Minerals that _______ show cleavage when broken are said to _______.
Fracture—the _________breakage of a mineral
The ___________________of an atom will determine whether a mineral will show cleavage or break in irregular fractures.

15. Conchoidal Fracture

16. 2.3 Properties of Minerals
Density
2.3 Properties of Minerals
Density is a property of all matter that is the ______of an object’s _____to its _________.
What is our formula for density?
In order to distinguish between fool’s gold (pyrite) and real gold, jewelers measure the ___________.

17. 2.3 Properties of Minerals
Distinctive Properties of Minerals
2.3 Properties of Minerals
Some minerals can be recognized by other _____________.
Sulfur – smells like _____________
Talc – feels _________
Graphite – feels ____________
Metallic minerals – easily shaped
Magnetite – magnetic
Calcite - magnifying

18. Properties of Minerals
Remember: __________________________ _____________________________________.
That means that a mineral’s color, fracture, streak, luster, etc is all determined by it’s chemical composition (___________) and their structure.

19. Use your notes to answer the following:
What determines the properties of a mineral?
Which mineral property is the LEAST useful in helping to identify a mineral?
Mohs scale is used to determine what property of minerals?
Define cleavage.
How are cleavage and fracture different?

20. Mineral Uses Webquest We use minerals ALL the time!
You and a partner are going to find out how we use minerals using your computers.
At least one partner in the group must have a computer and internet.
All team members must fill out their own paper.
Click here to get started!
The front side is REQUIRED! To work on the back for extra credit, click here for the section labeled FIREWORKS and here for MINERAL GROUPS