1. Title of notes: Mineral properties pg
Title of notes: Mineral properties pg. 7, 8, & 9 RS Goal for lesson: write on your self assessment I can list and describe all the properties of minerals.

2. Pick a science word and write the definition. Chapter 6 or glossary
Bell work
Pick a science word and write the definition.
Chapter 6 or glossary
Check the calendar!
Student vue check!!!

3. I’ll know I’ve got it when…
Learning target
I can list and describe all the properties of minerals.
Today I am…
reviewing mineral notes and asking questions for better understanding.
So that I’ll be able to…
understand how a mineralogist identifies minerals.
I’ll know I’ve got it when…
I can correctly describe at least two properties to my table parnter.

4. Identifying minerals
Some people wonder how scientists have identified over 3,500 minerals. Minerals have certain properties, or characteristics, that help to identify them.
Amethyst
Garnet
Corundum

5. What do all minerals have in common?
For a substance to be a mineral it must have these 5 characteristics:
Formed by natural processes on or inside Earth- no help from humans
Is inorganic- was never alive. For example, although coal was formed naturally in earth’s crust it came from plants and is therefore, not a mineral
Is a solid, with definite volume and shape. Liquids cannot be minerals!
Minerals always contains certain elements that give it a unique chemical composition (makeup). Some minerals are compounds which are made up of more than one element.

6. Mineral Properties
Luster
Hardness
Color
Cleavage
Streak

7. Color Minerals come in a variety of colors.
The same mineral can come in many different colors.
Color can be misleading
Many minerals will have a similar appearance, but will have different impurities
Color and appearance are not enough to distinguish minerals
Impurities can change the color of a mineral, weather can as well. Pyrite is golden in color but when weathered can become black.

8. Many minerals can be the same color. Below are gold colored minerals
Many minerals can be the same color. Below are gold colored minerals. Which one is gold?

9. None of them were real gold.
The answer…
None of them were real gold.

10. Luster Luster is the way a surface reflects light.
When you say an object is shiny or dull, you are describing luster.
Two types of luster
Metallic: looks like polished metal.
Nonmetallic: does not look like polished metal.
Nonmetallic can be shiny or dull.
If a mineral is shiny, it has a metallic. If it is dull it has a submetallic or non-metallic. Cassiterite – metallic,

11. Pyrite has metallic luster

12. Quartz has nonmetallic luster

13. Hardness Hardness refers to the mineral’s resistance to be scratched.
Diamonds cannot be scratched, talc for example can be scratched.
Talc can be scratched with a penny.

14. Frederick Mohs (1773 – 1839) Created Moh’s hardness scale
The scale characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material.
The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material.

15. Moh’s Hardness Scale
Using these ordinary materials of known hardness can be a simple way to approximate the position of a mineral on the scale.
Determined by specific gravity, which means how many more times a mineral weighs compared to an equal amt of water.

16. Cleavage Minerals can break in different ways.
Cleavage—minerals break along smooth, flat surfaces and every fragment has the same general shape

17. Fracture A mineral does not always make a clean break.
Fracture—minerals that break at random with rough or jagged edges
Some minerals break by only fracturing, but some can break in both ways (cleave and fracture)

18. Streak The color of the powdered form of the mineral
We find a minerals streak by rubbing it on a white ceramic plate
The color of the streak can be different than the mineral
Minerals must be softer than the streak plate

19. Additional properties
Magnestism
Reaction with Acid
Striations
Specific Gravity
Taste
Odor
Feel

20. Video Identifying minerals