Igneous Rocks

Card Set Information

Author:
amcmullen
ID:
139643
Filename:
Igneous Rocks
Updated:
2012-03-04 20:49:15
Tags:
Igneous Rocks
Folders:

Description:
Rocks composed from magma/ lava and determined by the size of the mineral grains.
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  1. TEXTURE APHANITIC
    • Crystals too small to see
    • Fine Grained
  2. TEXTURE PHANERITIC
    • Large Visible Crystals
    • Coarse Grained
  3. TEXTURE VESICULAR
    Small openings throughout the rock
  4. INTRUSIVE ROCKS
    • Cooled over a long period of time
    • Magma that cooled within the suface
    • Coarse Grained- Phaneritic
  5. EXTRUSIVE ROCKS
    • Aphanitic
    • Fine Grained
    • Cooled rapidly at the surface (Shot out of the volcano)
  6. GRANITE
    • Intrusive
    • Dark and Light Colors (Felspars and Quartz)
    • Phaneritic (Slight chance of porphyritic)
  7. DIORITE**
    • Dark
    • Phaneritic
    • Intrusive
  8. GABBRO
    • Dark
    • Phaneritic
    • Intrusive
    • Lumpy/Hackly
  9. PHYOLITE
    • LIGHT- PINK
    • Aphanitic
    • Extrusive
  10. BASALT
    • Dark
    • Aphanitic
    • Extrusive
    • No sticking out crystals
  11. PUMICE
    • GRAY-LIGHT
    • Vesicular
    • Extrusive
    • Dryed Sponge
  12. SCORIA
    • LIGHT
    • Vesivular
    • Extrusive
  13. OBSIDIAN
    • Dark
    • Glassy
    • Extrusive
  14. Mahoganey Obsidian
    • Dark
    • Glassy
    • Extrusive
    • Red and Black

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