Mineral agate 1

Mineral Agate

By Mary Nelson

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Chemical Composition=SiO2

Group=Quartz

Crystalline makeup= Hexagonal

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Uses

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Properties

Fracture= conchoidal- curved breakage

Color= multicolored in banded formation. Rare agates are iridescent- can be different colors at different angles

Luster=glassy

Hardness=7

Streak= white

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Special Properti

esPiezoelectric- 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/triboluminescence/

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Where are Agates Found?

Kentucky

South Dakota

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Technology

Mineral agate 1