Types of rocks

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Across
  1. 2. Large crystals, when magma cools, very hard ex.obsidian
  2. 6. Formed from fossils, ex. Limestone
  3. 9. Slow cooling
  4. 11. When sediment is compacted or cemented by quarts
Down
  1. 1. Lots of holes, need deposition, ex. Sandstone
  2. 3. Type of igneous rock, fast cooling
  3. 4. Needs heat and pressure, or chemical solution. Ex. Shales
  4. 5. Type of rock, sedimentary, no holes, medium texture
  5. 7. When a rock is very bumpy
  6. 8. Has strips or bands
  7. 10. Type of metamorphic rock, smooth and is not quarts