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Chapter 4 - Minerals - PowerPoint PPT Presentation


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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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mineral definition
Mineral - definition
  • Naturally occurring
  • Inorganic
  • Solid
  • Specific chemical composition
  • Definite crystalline structure
mineral systems
Mineral Systems
  • If space is not restricted, a mineral will exhibit a crystal pattern with a definite number of sides and specific angles.
mineral identification
Mineral Identification
  • Hardness – the ability to resist scratching; ranges from 1 (softest) to 10 (hardest)
mineral identification1
Mineral Identification

Streak

  • _________ – the color of the powdered form of a mineral
mineral identification2
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

mineral identification3
Mineral Identification
  • Cleavage (flat surfaces) or Fracture (no flat surfaces) – the way a mineral __________

breaks

review
Review

color

luster

texture

streak

hardness

cleavage

fracture

specific gravity