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or chemical cleaning agent
these individual “grapes” can range in color from turquoise to deep purple
521 million years old
Azurite is a striking copper-based mineral found in shades of deep blue to vivid green
Barite is a mineral with an interesting history
Yellow Fluorite Sphalerite or chemical cleaning agentFluorite 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
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