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/or chalcopyrite, sometimes siderite; 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). This is wonderful example of a rare green fluorite on matrix from Le Burg. I have never seen another of this color from the locality, as the mine is known famous for it blues. The color changes from this beautiful green under daylight, to a nice purple-grey under incandescent. The arrangement of the crystals upon the matrix is quite aesthetic and the specimen displays wonderfully.