Cave-In-Rock, Hardin County, Illinois

Fluorescent LW and SW

This is a small polished piece of yellow Fluorite with bright, shiny inclusions of Chalcopyrite crystals. Just below one side, there is a thin layer of purple Fluorite. This layer fluoresces bright yellow under both longwave and shortwave UV. The surface of the included Chalcopyrite crystals also glow orange. The fluorescence is due hydrocarbons.

2.1 x 2 x 1.9 cm

$35      Click here to order this mineral.