geology lab midertem

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Author:
stephanie.arrieta
ID:
11327
Filename:
geology lab midertem
Updated:
2010-03-20 02:34:43
Tags:
sac
Folders:

Description:
rocks
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  1. Kaolinite
    (white)
    • Hardness: 1(fingernail)
    • Luster: dull
    • Cleavage: 1, but one not apparent
    • white powdery clay "earthy" smell
  2. Talc
    (varies)
    • hardness: 1( softer then fingernail)
    • luster: non metallic
    • cleavage: 1 but one apparent
    • (feels soapy "soapstone")
  3. Graphite
    (silver to grey)
    • Luster: metallic
    • hardness: 1 (fingernail)
    • cleavage: 1 not apparent
    • (blackens fingernails, pencil lead)
  4. Hematite
    (red)
    • luster: non metallic
    • hardness: 1.5 (softer then fingernail)
    • cleavage: none
    • (red brown streak, variable hardness)
  5. chlorite
    (dark green)
    • Luster: dull
    • hardness: 2 (softer then fingernail)
    • cleavage: 1 not often apparent
    • (dark clay)
  6. gypsum
    (white or clear)
    • Luster: non metallic
    • hardness: 2 (softer then a fingernail)
    • cleavage: 1 very good! others may be apperent
    • (white clear or white, )
  7. sulfur
    (bright yellow)
    • luster: non metallic
    • hardness: 2.5 (fingernail)
    • cleavage: none
    • ("rotten egg" smell)
  8. biotite
    (dark)
    • luster: glassy or metallic
    • cleavage: 1 excellent
    • hardness: 2 to 3 (cant scratch glass/ harder then fingernail
    • (thin sheets)
  9. muscovite
    (light)
    • Luster: glassy metallic
    • hardness: 2 to 3 (cant scratch glass?harder then fingernail)
    • cleavage: 1 excellent
    • (thin sheets)
  10. halite
    (clear or white)
    • Luster: glass
    • hardness: 2 .5 (can scratch glass/ but harder then a fingernail)
    • cleavage: 3 good at 90
    • (table salt, cubic cleavage)
  11. galena
    (silver to grey)
    • luster: metallic
    • hardness: 2.5 (cant scratch glass/ but harder than a fingernail)
    • cleavage: 3 good at 90
    • (very heavy cubic cleavage)
  12. copper
    (copper)
    • luster: metallic
    • hardness: 3 ( cant scratch glass/ but harder then glass)
    • cleavage:none
    • (copper (orange-brown( streak)
  13. calicite
    (varies)
    • luster: non metalic
    • hardness: 3 (cant scratch glass/ but harder then fingernail)
    • cleavage: 3 good ar 75
    • (rhombohedral crystals: fizzes readily in acid)
  14. dolomite
    (varies)
    • luster: non metallic
    • hardness: 3 to 4 (cant scratch glass/ but harder then fingernail)
    • cleavage: 3 good at 75
    • (rhombohedral crystals, only powered fizzes in acid)
  15. malachite
    (green)
    • luster: non metallic
    • hardness: 3 to 4
    • cleavage: yes but often not apparent
    • (green streak, weak fizz in strong acid)
  16. fluorite
    (varies)
    • luster:glassy
    • hardness: 4 ( cant scratch glass/ harder then a fingernail)
    • cleavage: octahedral, (8 sided)
    • (triangular faces, often purple)
  17. apatite
    (green to brown)
    • Luster: non metallic
    • hardness: 5 (cant scratch glass/ harder then fingernail)
    • cleavage: 1 poor
    • (sometimes a hexagonal crystals)
  18. pyrite
    (gold)
    • luster: metallic
    • hardness: 5 (cant scratch glass/ but harder then fingernail)
    • cleavage: none
    • ( may have cubic crystals, fool's gold)
  19. amphibole
    (dark)
    • luster: non metallic
    • hardness: 6 ( can scatch glass)
    • cleavage: 2 at 90
    • (cleavage at 60 and 120)
  20. pyroxene
    (dark)
    • luster: non metallic
    • hardness: 6 (can scratch glass)
    • cleavage: 2 at 90
    • (cleavage at or near 90)
  21. olivine
    green or darker
    • luster: non metallic
    • cleavage: none
    • hardness:6 (can scratch glass)
    • (usually a mass of small grains)
  22. magnetite
    (black)
    • luster: metallic or dull
    • hardness: 6 (can scratch glass)
    • cleavage: none
    • black streak, strongly magnetic
  23. hematite
    (silver or red)
    • luster: dull or metallic
    • hardness: 6 (can scratch glass)
    • cleavage: none
    • red-brown streak

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