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Classifications for Minerals
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Classifications for Minerals

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Transcript

  • 1. Classifications for Minerals
  • 2. Color• When you look at the mineral, what color is it?
  • 3. Streak• When the mineral is rubbed on a streak plate, what color is the streak?
  • 4. Luster• Describes how light is reflected off of this mineral Metallic Nonmetallic• Two Types – Metallic – shiny like metal … earthy waxy – Nonmetallic – not like metal pearly dull – (earthy, waxy, pearly, dull, …) [[Read about Luster at the bottom of page 47]]
  • 5. Density Mass VolumeIf a mineral has a mass of 100 gramsand a volume of 50 mL, what is itsdensity?
  • 6. Hardness• Moh’s hardness scale – This scale lists 10 common minerals from softest to hardest (ranking from 1-10)• Scratch Test – Use nails, pennies, paperclips and other items to test the hardness of a mineral [[Read about Hardness on p.48-49]]
  • 7. Cleavage and Fracture• This describes how a mineral breaks• Some minerals break in a pattern, this is called cleavage (can be in 1, 2, or 3 different directions)• Some minerals fracture which means they break along irregular or jagged lines Read about Cleavage and Fracture on p. 50-51
  • 8. Cleavage and Fracture
  • 9. Special Properties• Magnetism – reacts to magnets• Reaction to Acid – dissolves in acid• Floresence – looks odd in ultraviolet light
  • 10. Video Directions• During the following videos, write down the order of classifications as they are presented.• Write down each classification