Chalcopyrite ore types, from huge masses as at Timmins, Ontario, to irregular veins and disseminations associated with granitic to dioritic intrusives as in the porphyry copper deposits of Broken Hill, the American cordillera and the Andes. The largest deposit of nearly pure chalcopyrite ever discovered in Canada was at the southern end of the Temagami Greenstone Belt where Copperfields Mine extracted the high-grade copper. Chalcopyrite is present in the supergiant Olympic Dam Cu-Au-U deposit in South Australia. Chalcopyrite may also be found in coal seams associated with pyrite nodules, and as disseminations in carbonate sedimentary rocks. Crystallographically the structure of chalcopyrite
Ore Mountains one overarching unit, the Saxon Highlands and Uplands. In addition, its internal divisions were changed. Former major unit 420 was grouped with the western part of major units 421 and 423 to form a new major unit, the Western Ore Mountains ("Westerzgebirge"), the eastern part of major units 421 and 423 became the Central Ore Mountains ("Mittelerzgebirge") and major units 422 and 424 became the Eastern Ore Mountains ("Osterzgebirge"). The current division therefore looks as follows: The geographic unit of the Southern Slopes of the Ore Mountains remains unchanged under the title of Southern Ore Mountains ("Süderzgebirge"). The climate of