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Minerals. What are minerals?  Naturally occurring  Inorganic  Solid  Specific chemical compositions  Made up of specific compounds or elements 

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Presentation on theme: "Minerals. What are minerals?  Naturally occurring  Inorganic  Solid  Specific chemical compositions  Made up of specific compounds or elements "— Presentation transcript:

1 Minerals

2 What are minerals?  Naturally occurring  Inorganic  Solid  Specific chemical compositions  Made up of specific compounds or elements  Definite crystalline structure  Form in open spaces and crystals grow to fill that space

3 Mineral Identification  Color  Luster  Streak  Hardness  Breakage

4 Mineral Identification  Color  Caused by trace elements or compounds within a mineral  Luster  The way a mineral reflects light  Metallic minerals- reflects light  Non-metallic- do not shine  Glassy, greasy, pearly, dull or earthy

5 Mineral Identification  Hardness  Measures how easily a mineral can be scratched  Moh’s Scale (1-10)  Finger nail, glass, streak plate  Streak  The color of a mineral when it is broken up and powdered.

6 Mineral Identification  Breakage  Minerals break along planes where atomic bonding is weak.  Cleavage- a mineral splits evenly along planes  Fracture- minerals that break with rough/jagged edges.


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