Galena 1–2% silver, a byproduct that far outweighs the main lead ore in revenue. Galena deposits often also contain significant amounts of silver as included silver sulfide mineral phases or as limited solid solution within the galena structure. These argentiferous galenas have long been the most important ore of silver. Galena deposits are found worldwide in various environments. Noted deposits include those at Freiberg in Saxony; Cornwall, the Mendips in Somerset, Derbyshire, and Cumberland in England; the Madan and Rhodope Mountains in Bulgaria; the Sullivan Mine of British Columbia; Broken Hill and Mount Isa in Australia; and the ancient mines of
Mineral industry of Paraguay shown interest in the country, which could support continued economic growth and foreign direct investment (FDI) in new technologies well into the next decade. In 2006, Paraguay produced mostly cement, clays, iron ore, natural gas, pig iron, and steel. Paraguay's mineral reserves and resources were unidentified. The mineral industry of Paraguay mostly consists of Paraguayan state-owned firms. The structure of the country's mineral industry would, however, change, particularly in the natural gas sector, to a privately and/or joint-venture owned, government-regulated regime from one that was only government owned (Banco Central del Paraguay, 2007). FDI inflows to Mercosur increased to $25.1