Minerals

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Minerals
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Atom
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Chemical Compounds
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Most Common Elements in the Earths Crust

• Oxygen (O)
• Silicon (Si)
• Aluminum (Al)
• Iron (Fe)
• Calcium (Ca)
• Sodium (Na)
• Potassium (K)
• Magnesium (Mg)

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Minerals

• Mineral must be
• Solid
• Naturally made
• Inorganic
• With a definite chemical composition
• With a definite crystal structure

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Crystal Structure
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Macroscopic Structure
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Silicate tetrahedron
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Quartz
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Hornblende
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Feldspar
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Identifying Minerals

• Crystal Habit
• Cleavage
• Fracture
• Hardness
• Specific Gravity
• Color
• Streak
• Luster
• Other

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Crystal Habit
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Cleavage
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Streak
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Hardness
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