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Chemical Formula: Al₂SiO₄(F
Apophyllite actually refers to a group of phyllosilicates
Today it is used for a very wide range of task
and other minerals
Recently discovered in the 1990s
Polished Agate Geode - Brazil Chemical Formula: Al₂SiO₄(FThe earthy tones inside this agate geode are eye catching to say the least. Not to mention the coating of druzy crystals in its center. Size: 3. 4 x 2. 2 x 1. 8 in. Weight: 8. 2 oz Location: Brazil Agate is a combination of chalcedony and quartz. It is easily recognizable by its multitude of colors and banding. Some of the most common formations of agates occur in geodes. These are cavities of gas that are eventually filled with fluids high in silica,