Fluorite

Fluorite from Harding County represents a fascinating window into deep-earth mineralization processes. This calcium fluoride specimen showcases the cubic crystal system characteristic of fluorite deposits, formed under specific temperature and pressure conditions within the Earth's crust. Harding County fluorite is prized by collectors and geologists alike for its well-defined crystal geometry and often striking coloration, which results from trace element substitutions and radiation exposure over geological time scales. The specimen's formation involved hydrothermal fluids circulating through host rock, depositing fluorite in veins and cavities. Its fluorescence under ultraviolet light, a property that gives the mineral its name, demonstrates the presence of activator impurities within the crystal lattice.

Origin: Harding County, IL

3 x 5.5 x 2 in

2.80 kg