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Identifying Minerals

Identifying Minerals. Each mineral has its own specific properties that can be used to identify it, this is due to the fact that each mineral has its own unique make-up. Hardness- Mohs Hardness Scale Streak Luster. Identifying Minerals.

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Identifying Minerals

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  1. Identifying Minerals • Each mineral has its own specific properties that can be used to identify it, this is due to the fact that each mineral has its own unique make-up. • Hardness- Mohs Hardness Scale • Streak • Luster

  2. Identifying Minerals • Each mineral has its own specific properties that can be used to identify it.

  3. Hardness- Mohs Hardness Scale • Hardness (how hard a mineral is) is one of the best properties that can be used to help identify a mineral • Mohs Hardness Scale ranks 10 minerals from softest to hardest, Talc is softest and Diamond is hardest

  4. Hardness- Mohs Hardness Scale http://www.realgems.org/pic/mohs%20en.jpg Our textbook lists Feldspar for 6

  5. Streak • Streak tells the color of a mineral’s powder. To find the streak of a mineral you rub the mineral against an unglazed tile called a streak plate.

  6. Streak

  7. Streak Is this Gold? How do you know?

  8. Luster • Luster describes how a mineral reflects light from its surface. Such as: • DescriptionExamples • Glassy Quartz • Silky Gypsum • Greasy Talc, some Quartz • Metallic Gold, Pyrite, Galena etc • Earthy Kaolin • Waxy some Serpentine • Pearly Gypsum, some Talc • Resinous Amber • Brilliant Diamond • Dull Graphite

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