Igneous Rocks

Edit Answers
123456789101112131415161718192021
Across
  1. 3. A hard, clear-to-white mineral found in granite.
  2. 5. The coarse-grained, intrusive equivalent of basalt.
  3. 7. Another term for extrusive igneous rock.
  4. 8. Olive-green mineral common in mafic rocks.
  5. 11. Frothy, light rock that can float on water.
  6. 13. A common feldspar mineral found in most igneous rocks.
  7. 15. Scientist who described the mineral cooling sequence.
  8. 16. Molten rock that breaks through to the surface.
  9. 17. Rocks formed from magma cooling underground.
  10. 18. ridge formed at spreading center
  11. 20. Another term for intrusive igneous rock.
  12. 21. The fine-grained, volcanic equivalent of granite.
Down
  1. 1. Molten rock beneath the Earth's surface.
  2. 2. Common coarse-grained rock used in countertops.
  3. 4. elevator pipe for diamonds
  4. 6. Volcanic glass formed by rapid cooling.
  5. 9. Dark rocks rich in magnesium and iron.
  6. 10. plate boundary at spreading center
  7. 12. Rocks formed from lava cooling on the surface.
  8. 14. A solid with a regular, repeating geometric shape.
  9. 15. Dark, fine-grained rock; makes up ocean floors.
  10. 19. Light-colored rocks rich in silica and feldspar.