Fluorite from Qinglong Mine, Shandong, China

QR Code Fluorite, which began as a pocket, has become several pockets of an interesting occurrence at the Qinglong Mine. They have selective coloration that focuses on the edges of the cubic Fluorite. This seemed to happen in the final generation, indicating a chemical shift of the hydrothermal solution that was precipitating the Fluorite. The result was a striking contrast to the more brightly colored earlier generation as saturated purple lines defined every edge.