Geology of Mauritania ore. A Neoproterozoic carbonate unit, part of a synformal nappe overturned in the Paleozoic, now forms a major copper deposit 250 kilometers northeast of Nouakchott in the Mauritanides Belt. The one kilometer, 250 meter wide deposit spans the West and East Moghrein Guelb hills. Forty meters below the deposit is a secondary deposit of cuprite, azurite, malachite and tenorite, with an additional 2.25% copper, some gold and sulfide mineralization including cubanite, chalcopyrite, pyrrohitite and aresnopyrite. In the 2000s, mining at the site had mostly ceased except for gold mining in the tailings pile. Gypsum is extracted from the N'Drahamcha quarry,
Ore Mountains 2007 the Ore Mountains and West Saxony is the most important Saxon holiday destination after the cities, and tourism is an important economic factor in the region. Since 2004 the Ore Mountain Tourist Association ("Tourismusverband Erzgebirge") has offered the Ore Mountain Card ("ErzgebirgsCard") with which over 100 museums, castles, heritage railways and other sights may be visited free of charge. The culture of the Ore Mountains was shaped mainly by mining that goes back to the Middle Ages. The old saying, coined here, that "everything comes from the mine" ("Alles kommt vom Bergwerk her!") refers to many areas of life