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Bellwork 10-28-13

Bellwork 10-28-13. Obj : SWBAT explain the properties that are used in classify minerals. What comes to mind when you see this picture? List as many minerals(at LEAST 2) that you can think of.(example: gemstones). What is a mineral? 1. Must be naturally occurring 2. Must be a solid

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Bellwork 10-28-13

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  1. Bellwork 10-28-13 • Obj: SWBAT explain the properties that are used in classify minerals. • What comes to mind when you see this picture? • List as many minerals(at LEAST 2) that you can think of.(example: gemstones)

  2. What is a mineral? • 1. Must be naturally occurring • 2. Must be a solid • 3. Must have a chemical composition • 4. Cannotbe organic • What does that mean? • 5. Have a defined crystalline structure

  3. How do we ID a mineral? With a partner developed some ways that you could categorize or separate different minerals?

  4. How do we ID a mineral? Scientists use mineral properties to ID minerals,Some of these properties include: Color Streak Cleavage • Luster • Hardness

  5. Mineral Color Describe the color of the mineral Azurite is blue Corundum (ruby) is red

  6. MineralStreak Describe the color of the streak on a piece of porcelain. Hematite has a RED streak

  7. Mineral Cleavage • Cleavage is the tendency of a mineral to cleave, or break, along flat, even surfaces. • Gypsum has ONE plane of cleavage • Salt has CUBIC cleavage

  8. MineralLuster • Luster is used to describe how light is reflected from the surface of a mineral. Luster can be: Metallic Earthy Glassy

  9. MineralHARDNESS • Hardness is a measure of the resistance of a mineral to being scratched. • It is measured on a scale from 1 to 10 • -Your finger nail has a hardness of 2-2.5 • -Acopper penny has a hardness of 3.5 • -A iron nailhas a hardness of 4.5 • -Glass has a hardness of 5.5 • -Minerals that are harder can SCRATCH other softer minerals

  10. Bellwork 11-4-13 Obj: SWBAT explain the properties that are used in classifying minerals and apply the hardness test. • Is Jell-O a mineral? What classifies a mineral? • What are the 5 properties of minerals we have taken notes on, explain each.

  11. Mineral Properties: The Hardness scale 1 10 Diamond Talc

  12. #1 on the hardness scale -Talcand graphite have a hardness of one.

  13. #2 on the hardness scale -Gypsum has a hardness of 2 -Gypsum is used for drywall (sheetrock)

  14. #3 on the hardness scale -Calcite and Native Copper have a hardness of 3. -Calcite is used to make concrete!

  15. #4 on the hardness scale -Fluorite has a hardness of 4 Fluorite is used to make the active ingredient in toothpaste (NaF)

  16. #5 on the hardness scale -Apatite and hematite have a hardness of 5 • Hematite beads  Your teeth are made of hydroxyl apatite!

  17. #6 on the hardness scale -Feldspar and Pyrite have a hardness of 6 *Chalcopyrite is an important ore of Copper

  18. #7 on the hardness scale Quartz has a hardness of 7, and is used to make glass, watches, lasers, abrasives, and many other things!

  19. #8 on the hardness scale Topaz occurs in many colors and is used as a gemstone (Novembers birthstone) Topaz has a hardness of 8

  20. #9 on the hardness scale Corundum has a hardness of 9. Corundumis the gemstone ruby and sapphire, it is also used to make sandpaper and abrasives

  21. #10 on the hardness scale -Diamond is the ONLY mineral to have a hardness of 10.

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