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Discovered - 1911
or the formation of equally thin layers of secondary minerals due to hydrothermal or other alteration
an iron ore mineral which provides an impressive contrast against the clear crystals
Barite is a mineral with an interesting history
Fluorite Sphalerite Discovered - 1911Fluorite 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
