Geology

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Author:
Anonymous
ID:
70246
Filename:
Geology
Updated:
2011-03-02 17:02:14
Tags:
Rocks Minerals Geology Lab
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Description:
Identify rocks and minerals
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  1. Granite
    • Phaneritic
    • Felsic
    • Grayish pinkish
    • Igneous Rock
    • Light gray feldspar
  2. Diorite
    • Intermediate
    • Phaneritic
    • Light gray and dark gray feldspar
    • Igneous
  3. Gabbro
    • Dark colored
    • Phaneritic
    • Mafic
    • Dark gray feldspar
    • Igneous
  4. Rhyolite
    • Aphanitic
    • Felsic
    • Pink to gray
    • Igneous
  5. Andesite
    • Igneous
    • Intermediate
    • Light to charcoal gray
    • Aphanitic
  6. Basalt
    • Mafic
    • Igneous Rock
    • Dark colored
    • Aphanitic
  7. Obsidian
    • Aphanitic
    • Can be dark, even though felsic
    • Glassy
    • Red to dark
    • Igneous
    • Sharp Edges
  8. Pumice
    • Light colored (white to light gray)
    • Felsic
    • Bubbly
  9. Scoria
    • Dark colored
    • tends to be mafic
    • bubbly
    • Red to black
    • Large pores
    • Igneous
  10. Tuff
    • Pryoclastic
    • Resembles concrete
    • Igneous rock
  11. Conglomerate
    • Resembles concrete
    • Coarse
    • Pebbles and Cobbles
    • Rounded pebbles in sandstone
    • Varicolored
    • Sedimentary
    • Detrital
  12. Breccia
    • Angular fragments
    • Pebbles and cobbles
    • Sedimentary
    • Detrital
  13. Arkose Sandstone
    • Gray to red
    • Some clay
    • Abundant feldspar grains
    • Detrital
  14. Quartz Sandstone
    • Medium particle size
    • Coarse sandpaper
    • White to grain to red or yellow
    • Detrital
  15. Siltstone
    • Detrital
    • Gritty to touch
    • Fine grained
    • Like fine sandpaper
  16. Shale
    • Very fine
    • Detrital
    • Smooth to slighty gritty
    • Slick when wet
    • Varicolored
    • Breaks into sheets
  17. Fossiliferous
    • Organic
    • Has fossils
  18. Chalk
    • Organic
    • White to gray to brown
    • Soft
  19. Bituminous Coal
    • Brown to black
    • Comes from plants
    • Brown to black
    • Commonly has yellowish sulfur compounds
    • Shiny
    • Organic
  20. Chert
    • Comes from plants and animals
    • Can't scratch steel
    • Sharp edges
    • Conchodial fracture
    • Organic
    • White to gray
    • Sedimentary
  21. Rock Salt
    • Halite
    • Cubic crystals
    • Salty
    • Greasy
    • Red/blackish/clear
  22. Oolite Limestone
    • Calcite
    • Chemical
    • Think tiny fish eggs
    • white to gray
    • Sedimentary
  23. Phyrite
    • Mineral
    • Pale brass yellow
    • Fools gold
    • Cubic Crystals
    • Metallic
  24. Magnetite
    • Iron-black
    • MAGNETIC
    • 5.5-6.5 hardness
    • Mineral
  25. Hematite
    • Silver to iron-black
    • Reddish brown streak color
    • Metallic
    • 5.5-6.5 hardness
    • GLITTERY
    • Common traces of rust
  26. Chalcopyrite
    • Brass yellow
    • Steak color: greenish/brownish black
    • 3.5-4 hardness
  27. Galena
    • Silver gray
    • Metallic
    • Streak color: grey to black
    • Hardness 2.5
    • Cleavage directions at 90 degrees
    • Appearance of lead
  28. Graphite
    • Pencil lead gray
    • Greasy
    • Softer than a fingernail
    • Mineral
  29. Garnet
    • Harder than streak plate
    • No streak
    • Dark red to black
    • Mineral
  30. Quartz
    • Clear, milky white, purple, rose, smoky
    • No streak
    • VERY HARD
  31. Olivine
    • Green
    • Olives=green
  32. Orthoclase Feldspar
    • White to pink
    • Hardness 6-6.5
    • NO streak
    • Looks like woodgrain
  33. Plagioclase Feldspar
    • White to dark gray
    • No streak
    • Fine straight parellel striations
  34. Amphibole
    • Dark green to black or brown
    • Common satin sheen
    • 2 cleavage directions
    • Streak: white to pale green
    • Hardness 6
  35. Pyroxene
    • Dark green to black
    • Streak: white to pale green
    • Luster approaches a sheen
    • 2 Cleavage directions
    • Hardness:6
  36. Hematite (nonmetallic)
    • Red,brown,yellow
    • Rusty earthy appearance
    • Hardness: 5.5-6.5
  37. Limonite
    • Old lemons
    • Brownish yellow color
    • Streak color: yellowish brown
    • Hardness 2-5.5
  38. Fluorite
    • Honey colored, violet-blue, yellow, green
    • Streak: White or none
    • Hardnss: 4
    • Glassy
    • 4 cleavage directions
    • Possibly translucent
  39. Malachite/Azurite
    • Bright green/blue
    • Mineral
  40. Dolomite
    • White, gray, pink
    • Streak: No streak
    • Glassy
    • 3 cleavage directions
    • Hardness: 3.5-4
  41. Calcite
    • Reacts to HCl
    • Clear, white, gray, yellow
    • No streak
    • Glassy
    • Mineral
    • Hardness: 3
  42. Biotite
    • UBER thin
    • Brown to black
    • Streak:white
  43. Muscovite
    • Clear to yellow
    • Streak color: colorless to white
    • 1 perfect flaky cleavage
    • Mineral
    • Hardness: 2.5
    • UBER Thin
  44. Halite
    • Clear to dark gray
    • NO streak (sometimes white)
    • Glassy
    • Hardness: 2.5
    • Salty
    • Mineral
  45. Chlorite
    • green to very dark green
    • Streak: Pale green
    • Irregular cleavage
    • Hardness: pale green
  46. Kaolinite
    • White, yellow, pink
    • Softer than a fingernail
    • Chalky
    • Silky when wet
    • Streak:White
  47. Gypsum
    • Clear to yellow
    • Streak: White
    • Softer than a finger nail
    • Glassy transparent plates
  48. Talc
    • Silvery or greenish white
    • Streak: White
    • Pearly luster
    • Nonmetallic
    • Softer than a fingernail
    • Soapy
    • Flakes easily

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