Fluorite Chrysanthemum 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

Malachite has been mined for both use in copper tools and for ornamentation and jewelry

pyrite is an abundant sulfide mineral that despite some similarities can easily be distinguished from actual gold by its crystal form (typically cuboidal) and being much harder whereas gold is soft and malleable

fluorite specimens have been prized since ancient times and are now among the most popular minerals in the collecting world

showy specimens contain chunky calcite crystals of exceptional shape draped within a dazzling matrix of midnight blue to black fine sugar quartz

Fluorite Chrysanthemum 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