Mount Isa Mines tetrahedrite as ore minerals along with common accessories pyrite, pyrrhotite, quartz, carbonates and graphite. Minor arsenopyrite, marcasite, chalcopyrite, valleriite, proustite, polybasite and argentite also occur. Original surface oxidized ore contained cerussite, anglesite and pyromorphite. Silver and zinc were removed from the surface oxidized zone and were deposited as supergene ore at a depth above the primary ore. Copper occurs in brecciated "silica-dolomite" rock. Primary minerals are chalcopyrite, pyrrhotite and arsenopyrite. minor amounts of cobaltite, marcasite, valleriite, chalcostibite, galena and others are reported. Smelter operations release sulfur dioxide emissions very close to the city of Mount Isa. The Mount Isa Mines
Out of a Center Which Is Neither Dead nor Alive have "no catchy harmonies or sing-along choruses, but plenty of blissful textures are woven among the downtrodden loping." Out of a Center Which Is Neither Dead nor Alive Out of a Center Which Is Neither Dead Nor Alive is the debut full-length album by Chicago-based post-metal band Minsk. Produced by Sanford Parker, the album was released in 2005 on At a Loss Recordings. In a review of the album, Allmusic's Greg Prato wrote: "Although the group has obvious roots in metal (as evidenced by tracks like 'Narcotics and Dissecting Knives'), Minsk has plenty of tricks up its sleeve, such as