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Mineral agate
By Mary Nelson
Chemical Composition=SiO2

Group=Quartz

Crystalline makeup= Hexagonal
Uses
Properties
Fracture= conchoidal- curved breakage
Streak= white
Hardness=7

Color= multicolored in banded formation. Rare a...
Special
Properties
Piezoelectric- substance that generates an
electrical charge when under stress

fluorescent- usually ...
Where are Agates Found?

Kentucky

South Dakota
Where are Agates Found?

Kentucky

South Dakota
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Mineral agate 1

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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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