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Chapter 4 - Minerals

Chapter 4 - Minerals. Mineral - definition. Naturally occurring Inorganic Solid Specific chemical composition Definite crystalline structure. Mineral Systems. If space is not restricted, a mineral will exhibit a crystal pattern with a definite number of sides and specific angles.

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Chapter 4 - Minerals

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  1. Chapter 4 - Minerals

  2. Mineral - definition • Naturally occurring • Inorganic • Solid • Specific chemical composition • Definite crystalline structure

  3. Mineral Systems • If space is not restricted, a mineral will exhibit a crystal pattern with a definite number of sides and specific angles.

  4. Mineral Identification • Hardness – the ability to resist scratching; ranges from 1 (softest) to 10 (hardest)

  5. Mineral Identification Streak • _________ – the color of the powdered form of a mineral

  6. Mineral Identification • _________– the way a mineral reflects light • In our class we will use three terms: • _______– not reflecting light well • _______ – reflects like water or glass • ________– reflects like a metal Luster dull glassy metallic

  7. Mineral Identification • Cleavage (flat surfaces) or Fracture (no flat surfaces) – the way a mineral __________ breaks

  8. Review color luster texture streak hardness cleavage fracture specific gravity

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