Oumjrane Mining Area

History · Geology

About Oumjrane Mining Area

The Oumjrane mining area in the Tafilalt-Anti-Atlas region of southeastern Morocco is one of the country’s most prolific contemporary collector localities, producing world-class barite, fluorite and sphalerite specimens. Active since the 1990s, Oumjrane comprises multiple sub-mines including Bou Tazoult, Boukfif, Aouli and Bouladine.

Geology

The deposits are Variscan-related Pb-Ba-F vein systems hosted in Paleozoic carbonate and clastic sequences. Multiple stages of hydrothermal mineralization produced large, complex pockets favorable for crystal growth, with frequent voids preserving doubly-terminated and floater crystals.

Notable Minerals

Barite (gem-clear blue-tinted tabular crystals — the modern Moroccan standard), fluorite (cubic and octahedral, with color variation across sub-mines: deep purple from Bou Tazoult, sea-green from Aouli), sphalerite (gem-clear chocolate-brown crystals), galena (Pb-rich primary), pyrite (lustrous cubes), cerussite, dolomite (saddle-shaped), chalcopyrite, quartz. The “blue barite on dolomite” association is a signature combination.

Collector Notes

Oumjrane specimens have surged in international visibility post-2010 and now appear consistently at Tucson, Munich and Sainte-Marie-aux-Mines shows. The sub-mines are independently labeled in collector contexts; many collectors specifically seek Bou Tazoult fluorite or Aouli green fluorite by sub-locality.