A mineral is identified by its properties

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Presentation transcript:

A mineral is identified by its properties Mrs. Leos

Let’s recap…… What is a mineral? How are minerals different than rocks?

WAYS TO TELL MINERALS APART

Streak: The powdered form of a mineral

Luster: How minerals reflect light Metallic Non-metallic

Cleavage The tendency of a mineral to break along a flat surface

Fracture The tendency of a mineral to break along a flat surface

Density Amount of mass (g) in a given volume of substance Helpful device to tell minerals apart http://www.youtube.com/watch?v=Q4EBOE4pJyw

Hardness Resistance to being scratch Mohs Scale (1-10) Talc(1)- scratch with fingernail Diamond (10)- only another diamond can scratch it

Based on Moh’s scale of hardness

Other Properties Reaction to acid Fluorescence Magnetism

On page 28 of your ISN NEATLY draw the Mohs scale (page 55 of your textbook) Write your 5 sentence summary (remember to focus on our objective)