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Minerals

Minerals. Physical Properties. talc. talc. Color – white, sea green, or gray Luster – pearly Hardness – 1 Streak – white to pale gray Cleavage – yes Fracture – uneven Uses – paint, baby powder, paper, rubber, cosmetics. Gypsum. Gypsum.

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Minerals

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  1. Minerals Physical Properties

  2. talc

  3. talc Color – white, sea green, or gray Luster – pearly Hardness – 1 Streak – white to pale gray Cleavage – yes Fracture – uneven Uses – paint, baby powder, paper, rubber, cosmetics

  4. Gypsum

  5. Gypsum • Color – white, gray, clear, yellow, red, brown • Luster – glassy, pearly • Hardness – 2 • Streak – white • Cleavage – yes • Fracture – fibrous or thin • Uses – wallboard, plaster, cement, plaster of Paris

  6. calcite

  7. calcite Color – white, gray, clear, yellow, red, brown, green, blue, or orange Luster – glassy Hardness – 3 Streak – white Cleavage – yes Fracture – conchoidal (rounded) Uses – cement, medication, paint, soil treatment, concrete

  8. Fluorite

  9. fluorite Color – purple, clear, yellow, green, red, blue, pink, black Luster – glassy Hardness – 4 Streak – white Cleavage – yes Fracture – rounded to uneven Uses – in drinking water, ornamental, stone

  10. Apatite

  11. apatite Color – green, brown, blue, yellow, violet, clear Luster – glassy Hardness – 5 Streak – white Cleavage – no Fracture – rounded Uses – fertilizer, gemstone, part of teeth and bones

  12. Orthoclase (Feldspar)

  13. Orthoclase (Feldspar) Color – white, reddish, pink, yellow Luster – glassy Hardness – 6 Streak – white Cleavage – yes Fracture – uneven Uses – glass, ceramics, gemstone

  14. Quartz (Points on rock base)

  15. Quartz (Points on rock base) Color – clear, white, green, brown, black, yellow, purple, gray, red, pink Luster – glassy Hardness – 7 Streak – white Cleavage – no Fracture – conchoidal (rounded) Uses – glass making, optical, electronics

  16. topaz

  17. Topaz Color – green, yellow, amber, clear, white, blue, pink Luster – glassy Hardness – 8 Streak – colorless, harder than streak plate Cleavage – yes Fracture – uneven Uses – gemstone

  18. corundum

  19. Corundum(uncut sapphires) Color – gray, white, brown, red, green, yellow, blue Luster – glassy Hardness – 9 Streak – colorless, harder than streak plate Cleavage – no Fracture – conchoidal to uneven Uses – abrasive, polishing, gemstone, sandpaper

  20. Diamond

  21. Diamond (cut) Color – clear, green, yellow, red, blue, brown, orange, black Luster – brilliant Hardness – 10 Streak – colorless, harder than streak plate Cleavage – yes Fracture – conchoidal Uses – gemstone, abrasive

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