1. Mineral Properties

2. Physical Properties of Minerals
Color
Streak
Hardness
Cleavage or Fracture
Crystalline Structure
Magnetism
Luster
Chemical Composition
Specific Gravity (density)

3. Color
18 Of the mineral properties, color is the least accurate for figuring out a mineral’s identity
23 The purest color of quartz is clear because it has the fewest impurities inside of it

4. Streak
13 A mineral’s streak is the powder left behind when a mineral scratches against a streak plate.
14 The color of the powder that a mineral leaves on a piece of white, unglazed porcelain is called the streak.

5. Streak

6. Luster
20 This characteristic is how light reflects off the mineral.

7. Luster
21 Metallic and nonmetallic describes a mineral’s luster

8. Another Property
Cleavage or Fracture

9. Cleavage
15 Cleavage is the tendency of a mineral to break along flat surfaces.

10. Cleavage
17 A Diamond breaks evenly and this is called cleavage.

11. Fracture
15 Fracture is the tendency of minerals to break into irregular pieces.

12. Fracture
16 Quartz breaks unevenly and this is called fracture

13. Hardness
This physical property is expressed in numbers and shows how the substance withstands being scratched.

14. 10 Minerals are identified by Hardness is tested by scratching

15. Hardness What is Mohs' hardness scale?
9 A scale from 1 to 10 that measures the hardness of minerals.

16. Hardness
Which is the softest?

17. Hardness
Which is the hardest?

18. 11 What physical properties can be expressed in numbers and shows how that substance withstands being scratched? Hardness

19. Other Properties Magnetism Crystalline Structure Chemical Composition
Specific Gravity (density)

20. Do you have all 9? Color Streak Hardness Cleavage or Fracture
Crystalline Structure
Magnetism
Luster
Chemical Composition
Specific Gravity (density)

21. 19 The most common classification of minerals is based on chemical composition.
22 This is considered a special property that applies to only a few minerals. Magnetism.