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Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
Review#4 minerals
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Review#4 minerals

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EARTH SCI REVIEW

EARTH SCI REVIEW

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Transcript

  • 1. L.O: REVIEW MINERALS & ROCKS
  • 2. MINERALS ARE NATURALLYOCURRING, INORGANIC SOLIDS.
  • 3. EARTH’S ROCKS ARE MADEMINERALSTHERE ARE OVER 2000 MINERALS,BUT A DOZEN ARE COMMON.
  • 4. Hard rocks are made of hard minerals.Softer rocks of soft minerals
  • 5. Which rock strata is made of thehardest (most resistant to weathering)minerals? How do you know?
  • 6. Which rock strata is made of thesoftest (least resistant to weathering)minerals? How do you know?
  • 7. Most minerals are made of the sameelements: especially oxygen & silicon
  • 8. THE DOZEN COMMON MINERALSARE CALLED: THE ROCK FORMERS.BECAUSE MOST OF EARTH’S ROCKSARE MADE FROM THEM.
  • 9. MINERALS GET THEIR PHYSICALPROPERTIES FROM THE INTERNAL ATOMIC(CRYSTALLINE) ARRANGEMENT OF THEIRATOMS.EX: DIAMONDS AND GRAPHITE ARE PURE CARBONATOMS, BUT HAVE VERY DIFFERENT PROPERTIESBECAUSE THEIR CARBON ATOMS ARE ARRANGEDDIFFERNTLY.
  • 10. MANY, MANY, MANY MINERALSARE USEFULL TO HUMANS BECAUSEOF THEIR UNIQUE PHYSICALPROPERTIES.SEE PAGE 15 OF YOUR EARTH SCIE CEREFERENCE TABLE.
  • 11. SCIENTISTS IDENTIFY MINERALS THROUGHTHEIR PHYSICAL AND CHEMICALPROPERTIES.• COLOR• HARDNESS• STREAK• LUSTER• CLEAVAGE• SPECIAL PROPERTIES.
  • 12. On the regents, I will usecleavage/fracture, luster, streak andhardness to identify one mineral.
  • 13. COLOR• Some minerals can be identified by their colorex: sulfur is always yellow.• Color is NOT very useful because someminerals come in different colors. Ex: quartzcomes in 7 colors• Sometimes very different minerals have thesame color. Gold and pyrite are bright yellow.
  • 14. Hardness: the ability of a mineralto resist being scratched.Hard minerals scratch soft minerals.
  • 15. On the regents I will scratch my mineral ona glass plate….
  • 16. If my mineral is harder than glass, it willscratch the glass plate….
  • 17. If my mineral is softer than glass, it won’tscratch the glass plate….
  • 18. Moh’s scale lists the hardness of someminerals
  • 19. Moh’s scale is used to determine thehardness of unknown minerals
  • 20. Streak: is the powder residue when amineral is rubbed on a bathroom tile
  • 21. A mineral’s Streak is like a “finger print”. Itsstreak is always the SAME color.
  • 22. On the regents I will see if my mineral leavescolored streak or non-colored (white ) streak
  • 23. Cleavage and fracture: how mineralbreaks into pieces.
  • 24. Cleavage: minerals breaks into smoothor flat pieces
  • 25. fracture: minerals breaks into unevenpieces
  • 26. On the regents, I will see if my mineralshows cleavage or fracture.
  • 27. Luster: the shininess of the mineral.If the mineral shines like metal, glassor dull (no shine).
  • 28. Metallic luster: shines like metal
  • 29. non-metallic (glassy) luster: looks likeglass
  • 30. Dull luster: does not shine.
  • 31. On the regents, I will see if mymineral has a metallic luster or non-metallic luster.
  • 32. Special properties• The mineral sulfur has a rotten egg smell.• Biotite mica looks like plastic.• Halite tastes salty• Calcium carbonate fizzes with acid.
  • 33. I will use page 15 of the ESRT toidentify minerals.
  • 34. Turn to page 191 of your greenworkbook

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