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Intro

Objective 11/16/11. Identify minerals. . Intro. Check and Hand-in Missing Assignments Write Q&A: What do you think are some ways to identify a mineral by?. Identifying Minerals. Minerals. 7 Ways to Identify Minerals. Color Luster Streak Fracture Texture Density Hardness. Minerals.

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Intro

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  1. Objective 11/16/11 Identify minerals. Intro • Check and Hand-in Missing Assignments • Write Q&A: • What do you think are some ways to identify a mineral by?

  2. Identifying Minerals

  3. Minerals • 7 Ways to Identify Minerals • Color • Luster • Streak • Fracture • Texture • Density • Hardness

  4. Minerals • Color • Describes the color that a mineral appears to be in regular light

  5. Minerals • Luster • How shiny a mineral is • High • Medium • Dull

  6. Minerals • Streak • The color that a mineral leaves on a streak-plate

  7. Minerals • Fracture • How easily a mineral breaks cleanly

  8. Minerals • Texture • How rough or smooth the mineral is • Rough • Medium • Smooth

  9. Minerals • Density • How much material makes up a mineral • Mass ÷ Volume = Density

  10. Minerals • Hardness • Tested by scratching the mineral with a fingernail, penny, or steel nail. • Moh’s Hardness Scale • Ranked 1 to 10 • 10 is the hardest

  11. Minerals • Moh’s Hardness Scale identifies a minerals hardness by comparing it to another object or mineral

  12. Objective 11/16/11 Identify minerals. Outro Of the 7 ways to identify minerals, which one is the least helpful? Why?

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