Rocks and Minerals

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Across
  1. 3. is one of the most reliable ways to identify a mineral
  2. 4. a fracture that is rough or irregular
  3. 6. the number of minerals compared on the hardness scale
  4. 12. last name of the mineralogist that created the hardness scale
  5. 13. the gemstone of the month with spring break
  6. 14. the type of fracture that results in a smooth curve
  7. 17. the the gemstone of the month we start summer break
  8. 18. softest mineral on the hardness scale
  9. 20. minerals react with this substance in a test tube to determine reactivity
  10. 21. rocks can be made from these
Down
  1. 1. where minerals naturally occur
  2. 2. physical property that is either shiny or dull
  3. 5. type of luster that is dull or non-reflective
  4. 7. the color a mineral displays in powdered form
  5. 8. this type of property describes with identifying minerals
  6. 9. type of luster that describes sulfur
  7. 10. this comes in a variety of hues and can is a physical property of minerals
  8. 11. number seven on the hardness scale
  9. 12. type of luster that is shiny or reflective
  10. 15. hardest mineral on the hardness scale
  11. 16. this is the type of luster that describes graphite
  12. 19. luster is described as the way a minerals surface reflects this