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(How can we identify which mineral is which?)

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Presentation on theme: "(How can we identify which mineral is which?)"— Presentation transcript:

1 (How can we identify which mineral is which?)
8 Ways to Identify Minerals

2 1. Color

3 2. Luster the way the mineral’s surface reflects light.
metallic, earthy, waxy, greasy, glassy

4 Luster Resinous luster

5 Discuss… How is luster different from color?

6 3. Streak-- the color of the powder

7 Streak – the color of the powder

8 -Cleavage 4. The way the mineral breaks
-breakage occurs along smooth,flat surfaces

9 Examples of Cleavage

10 -Fracture Breakage occurs in curved or irregular shapes

11 5. Hardness resistance to scratching Mohs Hardness Scale 1-10
Talc-- 1 (SOFTEST) Diamond 10 (Hardest)

12 6. Density Minerals have different densities
How much MASS something has in relation to its size Pyrite= 5.01g/cm3

13 7. Crystal Systems Minerals can form different shaped crystals with varying numbers of sides.

14 8. Special Properties Some properties only apply to a few types of minerals Fluorescence Magnetism Chemical Reactions Taste Optical Properties Radioactivity

15 example of optical properties
Calcite Quartz


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