Le Burg Mine (Le Burc Mine), Alban - Le Fraysse area, Tarn, Occitanie, France
|Latitude & Longitude (WGS84):||43° 52' 23'' North , 2° 24' 20'' East|
|Latitude & Longitude (decimal):||43.87306,2.40556|
|Köppen climate type:||Cfb : Temperate oceanic climate|
|Name(s) in local language(s):||Mine du Burg (Mine du Burc), Région d'Alban et du Fraysse, Tarn, Midi-Pyrénées, France|
|Other/historical region names associated with this locality:||Midi-Pyrénées|
A large fluorite vein (1200m in long and 3m in width), hosted in ordovician black schists. As all fluorite deposits in Tarn, this one is mainly composed of blue fluorite with quartz and siderite. It is well known for its nice blue and/or yellow fluorite crystals on quartz.
The vein was mined during antiquity (for copper) but was only rediscovered in 1945 and operated (for fluorite) from 1954 until April 2006. During the operation up to 290m depth, 650,000 tons of fluorite were worked out. It was the last fluorite mine in France...
15 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
485.4 - 541 Ma
|platform deposit or turbidittic basin|
Age: Cambrian (485.4 - 541 Ma)
Description: low grade metamorphic
Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. 
541 - 1000 Ma
|Neoproterozoic crystalline metamorphic rocks|
Age: Neoproterozoic (541 - 1000 Ma)
Comments: Massif Central
Lithology: Crystalline metamorphic rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.