1. Warm-Up: List the 5 characteristics of a mineral.

2. Topic Objectives Identify the 5 properties of a mineral. Identify a mineral using its properties. Describe why color is not a good way to identify a mineral.

3. Mineral Properties

4. What are mineral properties? They are characteristics about specific types of minerals…ex. hematite is red and sulfur is yellow

5. Why should we care about mineral properties? Many minerals look the same, so if a scientist needs to identify a mineral, they must test its properties to figure out which type of mineral it is.

6. What are the 5 properties we will study? 1.Color 2.Luster 3.Streak 4.Hardness 5.Crystal Structure

7. Property #1: Color You can determine the color of a mineral by looking at it (Duh!), but make sure you are specific! What color are the minerals below (specifically)?

8. Why is knowing the color not enough information to identify the mineral? Problem #1- Many different types of minerals have the same color…(milky quartz and calcite) Problem #2- One type of mineral can come in many different colors… (ex. quartz)

9. Property #2: Luster The luster of a mineral is the way that the mineral shines in light. Metallic Luster: Shines like polished metal Nonmetallic Luster: Does not shine like polished metal (can look glassy, earthy, oily, dull, etc.)

10. Property #3- Streak The streak of a mineral is the color of a mineral’s powder. This is determined using streak plates that gently scratch the mineral to turn some of it to powder.

11. Property #4- Hardness The hardness of a mineral is its resistance to being scratched. 1.Which mineral can scratch topaz, but not diamond? 2.Which mineral can only scratch talc? 3.Which mineral can scratch diamond?

12. Property #5- Crystal Structure The atoms in minerals are arranged into orderly structures (specific shapes). -Cubic -Tetragonal -Orthrohombic -Hexagonal

13. Cubic Three axes (x, y, z) of equal length.

14. Tetragonal Three axes (x, y, z), with two of equal length and one of different length.

15. Orthrohombic Three axes (x, y, z), all of different length.

16. Hexagonal Three axes of equal length, one of different length (4 axes total!=6-sided).

17. Exit Question: Answer “Connecting Concepts” question only from pg 55 of text. Use the key on pgs. 54-55 to answer.