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
Ore railway station station has been unstaffed since a booking office fire in the late 1980s, and it has no other facilities. There is limited road access via Ore Valley Road (off Hughenden Road), but this station is not recommended for people with physical disabilities. The area has in the past been a hotspot for vandalism but is now covered comprehensively by CCTV. It is scheduled for a major re-development. There has been some debate as to whether the station should be renamed Hastings East or Ore Valley. Trains terminating and restarting at this station run forward into a turnaround siding which runs