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
Heavy mineral sands ore deposits Chile and Ecuador, is carried out in an environmentally responsible manner. Examples of environmentally sensitive and politically sensitive mineral sand mining operations which have gained public attention and galvanised environmental activism responses to mining proposals include the Tuart-Ludlow mineral sands mine, Western Australia, and the culmination of conservationist efforts to preserve Rainbow Beach and Fraser Island, Queensland, Australia. These latter campaigns successfully lobbied government and saw Fraser Island and Rainbow Beach protected by the High Court of Australia; however, the Tuart-Ludlow campaign failed to prevent mining works in the Tuart forests in coastal Western Australia. Similar mineral sand mining operations