Fluorite Phantom Minerals and Gems The herring-like fish of the

The herring-like fish of the genus Knightia were far and away the most abundant freshwater fish during this era

fine quartz crystals

Each formation is unique

or the formation of equally thin layers of secondary minerals due to hydrothermal or other alteration

Fluorite has long been used as a gemstone and is increasingly popular in the market

Fluorite Phantom Minerals and Gems The herring-like fish of theFluorite 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