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Minerals

Minerals. What is the difference in picture A and B? (Other than the obvious). A. B. What is a mineral?. Formed by natural processes such as cooling magma and evaporating saltwater Inorganic – not made by life processes Element or a compound with definite chemical composition (structure)

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Minerals

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  1. Minerals

  2. What is the difference in picture A and B? (Other than the obvious) A B

  3. What is a mineral? • Formed by natural processes such as cooling magma and evaporating saltwater • Inorganic – not made by life processes • Element or a compound with definite chemical composition (structure) • Solid and crystalline (atoms in patterns that repeat over and over again)

  4. S.N.I.F.E.Solid-not liquid, gas, or plasmaNaturally Occurring-Not manmadeInorganic–Not alive, never wasFixed Composition - Same recipe everywhere, every timeElement or Compound-Not a mixture

  5. How are minerals classified? Minerals are grouped based on crystal systems. This means that they are classified according to their type of repeated crystal patterns.

  6. Hardness Luster Specific Gravity Streak Breakage Unique properties How are minerals identified? (How can you tell them apart?)

  7. Hardness Hardness is determined by how easily a mineral can be scratched. Mohs Scale of Hardness is used to measure the hardness of a mineral

  8. Luster The way a mineral reflects light. Metallic or Nonmetallic

  9. Specific Gravity The weight of the mineral in comparison to the weight of an equal volume of water

  10. Streak The color of a mineral when it is in powdered form. Tested by streaking the mineral across another object (object must be harder than the mineral)

  11. Breakage Clevage-breaks along smooth, flat surfaces Fracture-breaks with an uneven, rough, or jagged surface

  12. Unique Properties Many minerals have unique characteristics that can also be used to identify the mineral. Example-natural magnet, double refraction, odor, taste, reaction to acids, fluorescence, etc.

  13. Uses of Minerals • Minerals are a component of everyday life because they are a part of everyday objects • Jewerly (gems-rare minerals) • Diamonds are used in industrial abrasives and cutting tools • Some minerals are used to produce specific types of laser light • Quartz is used in electronics • Minerals that contain useful substances can be mined (Ex. Bauxite-aluminum; Ilemenite and Rutile-titanium)

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