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How could you tell these minerals apart to determine which is which?

How could you tell these minerals apart to determine which is which?. Fluorite. halite. Talc. Topaz. Identifying Minerals. Cornell Notes Page 131. (How can we identify which mineral is which?) 8 Ways to Identify Minerals. 1. Color.

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How could you tell these minerals apart to determine which is which?

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  1. How could you tell these minerals apart to determine which is which? Fluorite halite Talc Topaz

  2. Identifying Minerals • Cornell Notes Page 131.

  3. (How can we identify which mineral is which?) 8 Ways to Identify Minerals

  4. 1. Color

  5. Discuss- why wouldn’t color be the best way to identify minerals?

  6. 2. Luster • the way the mineral’s surface reflects light. • metallic, earthy, waxy, greasy, glassy

  7. Luster • Resinous luster

  8. Discuss… • How is luster different from color?

  9. 3. Streak-- the color of the powder

  10. Streak – the color of the powder

  11. Discuss… • How do you find a minerals streak?

  12. 4. The way the mineral breaks -Cleavage -breakage occurs along smooth,flat surfaces

  13. Examples of Cleavage

  14. -Fracture • Breakage occurs in curved or irregular shapes

  15. Discuss… • How are cleavage and fracture different?

  16. 5. Hardness • resistance to scratching • Mohs Hardness Scale 1-10 Talc--1 (SOFTEST) Diamond 10 (Hardest)

  17. Discuss… • What does hardness mean when referring to minerals? • What scale do we use to measure hardness?

  18. 6. Density • Minerals have different densities • How much MASS something has in relation to its size Pyrite= 5.01g/cm3

  19. 7. Crystal Systems • Minerals can form different shaped crystals with varying numbers of sides.

  20. 8. Special Properties • Some properties only apply to a few types of minerals • Fluorescence • Magnetism • Chemical Reactions • Taste • Optical Properties • Radioactivity

  21. example of optical properties Calcite Quartz

  22. Review • 1. What is a mineral’s streak? • 2. What are 7 other ways to ID minerals?

  23. Your House Comes From a Mine Iron 1. 2. 3. 4. 5. 6. Petroleum 1. 2. 3. 4. 5. Clay 1. 2. 3. 4. Limestone 1. 2. Copper 1. Gypsum 1.

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