Agate And Wood Products:
Agate forms when gas bubbles are trapped in solidifying lava. Agate is the most common variety of chalcedony which is a form of quartz.
Agate is identical with quartz in composition and physical properties. Most agates occur in cavities of eruptive rocks or ancient lavas forming geodes filled with Quartz. Agate is Quartz with impurities causing the many different patterns.
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