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corundum

corundum. Corundum. Corundum is a very valuable mineral and it comes in many different colors. Corundum’s properties. Color: Frequently gray, but also white, red, blue, yellow, and green. Streak: Colorless. Luster: Vitreous* and pearly.

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corundum

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  1. corundum

  2. Corundum • Corundum is a very valuable mineral and it comes in many different colors.

  3. Corundum’s properties • Color: Frequently gray, but also white, red, blue, yellow, and green. • Streak: Colorless. • Luster: Vitreous* and pearly. • Hardness: 9 on the scale. It is harder than topaz and quartz, but softer than diamond and moissanite. • *Vitreous: Glassy

  4. It’s crystal shape • Corundum has a hexagonal shape.

  5. Where you can find corundum • Corundum can be found in metamorphic and volcanic rocks in places like Burma, Thailand, and Sri Lanka.

  6. The formula of corundum • The formula of corundum is AI203. (Aluminum Oxide)

  7. Fun facts • Did you know that a red corundum is a ruby and a blue corundum is a sapphire? • Corundum has no cleavage. • Corundum is the 3rd hardest mineral. • It was named "corinvindum" in 1725 by John Woodward. Richard Kirwan used the current spelling "corundum" in 1794.

  8. Resources Used • http://geology.com/minerals/ • http://www.ask.com/question • http://www.answers.com/ • http://answers.yahoo.com/question

  9. Credits • Presented and created by: Helen and Elizabeth. • Helpers: AsadSoomro, Ben Rosenfeld, and Luke Capello.

  10. BONUS

  11. What is corundum’s Streak? • Click for Answer

  12. Colorless • Back to Chart

  13. What is corundum’s luster? • Click for Answer

  14. Vitreous(Glassy) and pearly • Back to Chart

  15. What is corundum’s usual color? • Click to Answer

  16. Usually gray • Back to Chart

  17. True or false: corundum is found in Burma. • Click for Answer

  18. True • Back to Chart

  19. Is corUNDUM FOUND IN METAMORPHIC/Volcanic rocks or in sedimentary rocks? • Click for Answer

  20. Metamorphic/volcanic rocks • Back to Chart

  21. True or false: srilanka is one place corundum is found. • Click for Answer

  22. true • Back to Chart

  23. True or false: corundum is 9 on the moh’s scale. • Click for Answer

  24. True • Back to Chart

  25. Daily double • See Problem

  26. What 2 minerals are harder than corundum? • Click for Answer

  27. Diamond and moissanite • Back to Chart

  28. What number is corundum on the moh’s scale? • Click for Answer

  29. 9 • Back to Chart

  30. What mineral is number 8 on the moh’s scale? • Click for Answer

  31. Topaz • Back to Chart

  32. What is a red corundum called? • Click for Answer

  33. Ruby • Back to Chart

  34. Corundum’s shape is… • Click for Answer

  35. Hexagonal • Back to Chart

  36. True or false: corundum is the 3rd hardest mineral. • Click for Answer

  37. True • Back to Chart

  38. What is corundum’s formula? • Click for Answer

  39. AI203 (aluminum oxide) • Back to Chart

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