Rocks and Minerals

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Across
  1. 2. / the way a mineral shines, or reflects light
  2. 3. / a measure of how easily a mineral can be scratched
  3. 7. rock / rock that forms when sand, particles or rock, bits of soil, and remains of living things are pressed together and harden
  4. 9. mineral / a mineral that is shiny like a metal
  5. 11. / a solid material made up of one or more minerals
  6. 12. / sand, particles or rock, bits of soil, and remains of once-living things
Down
  1. 1. rock / rock that forms when melted, or molten, rock from deep below Earth's surface cools and hardens
  2. 4. mineral / a mineral that is dull or glassy
  3. 5. / the color of a mineral when it is ground to a powder
  4. 6. rock / rock that forms when existing rocks are changed by extreme heat and pressure
  5. 8. / a nonliving solid material that has a definite chemical makeup and is found in Earth's outermost layer
  6. 10. / the tendency of a mineral to split easily along flat surfaces