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The spectacular display of colors these specimens display can be formed by two different geological processes: the oxidation of pyrite causing ultra-thin layers of iron oxide to form on the surface
Metacanthian Trilibite from the Mid Devonian Period
“Cathedral” geodes are named for their tall
reminiscent of the famed logo of Mercedez Benz
Azurite has been sought after since ancient times as a gem and for use in blue pigment
Green Clear Fluorite Azurite The spectacular display of colorsFluorite is one of the most variable of all crystalline minerals, occurring in shades of blue, green, purple, red and many other colors corresponding to their physical makeup and conditions when the mineral was formed. The name fluorite comes from its use as a flux, or chemical cleaning agent, in iron smelting and other metallurgy. Pure fluorite is clear, but most specimens have vivid color due to various impurities and are often fluorescent. With a
