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Ga Minerals

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Ga Minerals

  1. 1. Identify the Georgia Minerals © Copyright 2006.  M. J. Krech. All rights reserved.
  2. 2. 1. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: white or colorless </li></ul><ul><li>Hardness: 3 - 3.5 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 4.3 - 5 </li></ul><ul><li>Breakage: Conchoidal fracture </li></ul><ul><li>Luster: Vitreous </li></ul>
  3. 3. <ul><li>This mineral is Barite. </li></ul><ul><li>Formula: BaSO 4 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Orthorhombic </li></ul><ul><li>(usually cubic </li></ul><ul><li>or stretched cubic) </li></ul><ul><li>Uses: cement, cosmetics, paints </li></ul>
  4. 4. 2. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: colorless or tinted gray, brown, yellow, green, or rarely, red or violet </li></ul><ul><li>Hardness: 2 - 2.5 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.6 - 3 </li></ul><ul><li>Breakage: perfect basal cleavage - splits into thin sheets </li></ul><ul><li>Luster: vitreous, pearly </li></ul>
  5. 5. 2. This mineral is Mica. <ul><li>Formula: KAl 2 (AlSi 3 O 10 )(F,OH) 2 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Monoclinic </li></ul><ul><li>Uses: fireproofing, lubricant </li></ul>
  6. 6. 3. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: white to gray to pink </li></ul><ul><li>Hardness: 1.5 - 2 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.31 - 2.33 </li></ul><ul><li>Breakage: Conchoidal   Fracture, sometimes fibrous </li></ul><ul><li>Luster: vitreous to silky to    pearly </li></ul>
  7. 7. 3. This mineral is Gypsum. <ul><li>Formula: CaSO 4 · 2H 2 O </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Monoclinic </li></ul><ul><li>Uses: blackboard chalk, toothpaste, surgical casts, plaster of Paris, drywall </li></ul>
  8. 8. 4. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: brown, copper red, </li></ul><ul><li>light pink, red </li></ul><ul><li>Hardness: 2.5 </li></ul><ul><li>Streak: redidsh copper </li></ul><ul><li>Specific Gravity: 8,9 </li></ul><ul><li>Breakage: Hackly - jagged </li></ul><ul><li>Luster: Metallic </li></ul>
  9. 9. 4. This mineral is Copper. <ul><li>Formula: Cu </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Mostly cubic (isometric) </li></ul><ul><li>Uses: wiring, coins </li></ul>
  10. 10. 5. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: usually white </li></ul><ul><li>Hardness: 1.5 - 2 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.6 </li></ul><ul><li>Breakage: Basal cleavage </li></ul><ul><li>Luster: earthy (dull) </li></ul>
  11. 11. 5. This mineral is Kaolin. <ul><li>Formula: Al 2 O 3 ·2SiO 2 ·2H 2 O </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>      Tetrahedral layer </li></ul><ul><li>      + Octohedral layer </li></ul><ul><li>Uses: Paper manufacturing, ceramics, medicine, toothpaste </li></ul>
  12. 12. 6. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: white, gray, yellow, red, orange, and rarely, green </li></ul><ul><li>Hardness: 6 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.56 - 2.58 </li></ul><ul><li>Breakage: cleavage </li></ul><ul><li>Luster: vitreous to pearly </li></ul>
  13. 13. 6. This mineral is Feldspar. <ul><li>Formula: KAlSi 3 O 8 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Monoclinic </li></ul><ul><li>Uses: porcelain, </li></ul><ul><li>       scouring powder, </li></ul><ul><li>       when pearly - called Moonstone  and used in jewelry </li></ul>
  14. 14. 7. What is this mineral? <ul><li>Properties: </li></ul><ul><li>Color: clear if no impurities, then pink, gray, purple, yellow, green, brown, orange </li></ul><ul><li>Hardness: 7 </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.65 </li></ul><ul><li>Breakage: Conchoidal Fracture </li></ul><ul><li>Luster: Vitreous </li></ul>
  15. 15. 7. This mineral is Quartz. <ul><li>Formula: SiO 2 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Hexagonal </li></ul><ul><li>(Six-sided prisms - </li></ul><ul><li>often distorted) </li></ul><ul><li>Uses: lenses, glass, digital watches, sandpaper </li></ul>
  16. 16. 8. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: white to green to gray </li></ul><ul><li>Hardness: 1 (softest mineral    on Moh’s hardness scale) </li></ul><ul><li>Streak: white </li></ul><ul><li>Specific Gravity: 2.5 - 2.8 </li></ul><ul><li>Breakage: perfect basal    cleavage </li></ul><ul><li>Luster: waxy or pearly </li></ul><ul><li>Special Property: soapy feel </li></ul>
  17. 17. 8. This mineral is Talc. <ul><li>Formula: Mg 3 Si 4 O 10 (OH) 2 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Monoclinic </li></ul><ul><li>Uses: heat-resistant science lab countertops, paints, insecticides </li></ul>
  18. 18. 9. What is this mineral? <ul><li>Properties : </li></ul><ul><li>Color: red brown to black </li></ul><ul><li>Hardness: 7 - 7.5 </li></ul><ul><li>Streak: white to gray </li></ul><ul><li>Specific Gravity: 3.65 - 3.77 </li></ul><ul><li>Breakage: Sub-conchoidal fracture </li></ul><ul><li>Luster: vitreous - dull </li></ul><ul><li>Special Property: often appears twinned in a cross shape </li></ul>
  19. 19. 9. This mineral is Staurolite. <ul><li>Formula: </li></ul><ul><li>(Fe,Mg,Zn)2Al 9 (Si,Al)4O 22 OH 2 </li></ul><ul><li>Crystal Structure: </li></ul><ul><li>Monoclinic-prismatic </li></ul><ul><li>Uses: </li></ul><ul><li>     GEORGIA’S STATE MINERAL </li></ul>
  20. 20. The End <ul><li>What do you know about Georgia’s minerals now? </li></ul><ul><li>Make a list of the five most important facts about Georgia’s minerals! </li></ul>

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