Mineral agate 1

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  • Just some general information before we begin. Agates chemical composition is 1 Silicate and 2 Oxygens. It belongs in the group of Quartz and its crystalline makeup is Hexagonal.
  • Mineral agate 1

    1. 1. Mineral agate By Mary Nelson
    2. 2. Chemical Composition=SiO2 Group=Quartz Crystalline makeup= Hexagonal
    3. 3. Uses
    4. 4. Properties Fracture= conchoidal- curved breakage Streak= white Hardness=7 Color= multicolored in banded formation. Rare agates are iridescent- can be different colors at different angles Luster=glassy
    5. 5. Special Properties Piezoelectric- substance that generates an electrical charge when under stress fluorescent- usually glows green or white triboluminescence- flash of light produced when a material is subject to friction, impact, or breakage http://geology.com/minerals/triboluminesce nce/
    6. 6. Where are Agates Found? Kentucky South Dakota
    7. 7. Where are Agates Found? Kentucky South Dakota

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