Minerals and Rocks

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Across
  1. 2. Pressure that is exerted on the rock from one direction, the rock forms layers.
  2. 4. mineral's physical properties are determined by its chemical __ and crystal structure
  3. 6. these are often found where seas once covered the land.
  4. 12. Scientists who study minerals
  5. 16. these minerals contain sulfur atoms bonded to oxygen atoms
  6. 17. A solid material that forms by a natural process
  7. 18. rock that forms when sediments are compacted and cemented together
  8. 19. A mineral's crystal __ is determined by the way the atoms are arranged
  9. 20. these minerals contain one or two metal elements combined with oxygen
Down
  1. 1. contain metal elements combined with sulfur
  2. 3. People make gemstones in a
  3. 5. these minerals have an atom of phosphorus, arsenic, or vanadium is bonded to oxygen.
  4. 7. rock that forms when magma cools below Earth's surface
  5. 8. __ elements contain only atoms of one type of element
  6. 9. rock that forms when an existing rock is changed by heat or pressure.
  7. 10. these minerals are salts and form when salt water evaporates
  8. 11. a naturally formed, non-living Earth material
  9. 13. the largest mineral group
  10. 14. Minerals must be __
  11. 15. melted rock inside Earth