Yellow Fluorite Selenite roughly 20 million years ago

roughly 20 million years ago

Pyrite formations tend to be shiny and metallic

it is instead formally known as botryoidal purple chalcedony

Fluorite is one of the most variable of all crystalline minerals

These unique

Yellow Fluorite Selenite roughly 20 million years agoFluorite 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