Monday 18 April 2011

Agate


Agate is a micro-crystalline variety of silica, chiefly chalcedony, characterized by its fineness of grain and brightness of color. Agates may be found in various kinds of rock, but they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.If we cut or open it, there will be an amazing variety of colors and patterns.




Crystal Structure
Trigonal

Composition
Silicon dioxide
Hardness
7



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