Le Burg Mine, France
Le Burg Mine , Alban - Le Fraysse area, Tarn, Occitanie, France
The Le Burg Mine, near Tarn, in France’s Mid-Pyrenees has been a one of the most important localities for specimen-quality fluorite in all of Europe over the last 75 years or so. Most specimens are blue in color and are typically associated with quartz and chalcopyrite; however, specimens of yellow, green, yellow/orange, yellow/blue, etc. do occur. The mine was operated hundreds of years ago for copper, lost to time, then rediscovered in 1945 and actively mined for fluorite from 1954 until it finally closed in 2006 (Kosnar, 2013). A highly unusual yellow-green fluorite grouping with blue phantoms. This specimen is unique amongst all Le Burg fluorite I have seen. While the occasionally yellow or yellow/orange with blue zoning shows up, I have never seen another with this unique yellow-green color. The larger cubes show multiple generations of deep blue phantoms that were impossible to capture with my camera. The crystals are quite translucent, letting a lot of light through and despite some minor dings here and there, the specimen is in good condition overall and displays nicely.