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الثلاثاء، 5 أغسطس 2014

Super Pit - Kalgoorlie




Super Pit - Kalgoorlie

The Fimiston Open Pit, colloquially known as the Super Pit, is Australia's largest open cut gold mine. The Super Pit is located off the Goldfields Highway on the south-east edge of Kalgoorlie, Western Australia. The pit is oblong in shape and is approximately 3.5 kilometres long, 1.5 

kilometres wide and 570 metres deep. At these dimensions, it is large enough to be seen from space.
The Super Pit is owned by Kalgoorlie Consolidated Gold Mines Pty Ltd, a company owned 50/50 by Barrick Gold Corporation and Newmont Mining Corporation. The mine produces 850,000 ounces (28 tonnes) of gold per year, and employs around 550 employees directly on site


 (français )
Super Pit est une mine d'or à ciel ouvert située près de Kalgoorlie en Australie-Occidentale. Elle mesure 3,8 km de long, 2 km de large et 400 m de profondeur, en étant ainsi la grande mine d'or à ciel ouvert d'Australie. Elle est détenue à 50/50 par Barrick Gold et Newmont Mining. Le site emploie 550 personnes avec une production de 28 tonnes d'or par an..









 

Manganese Ores




Manganese Ores

Any mineral from which manganese is produced. The main ores are the oxides, such as pyrolusite, MnO2; hausmannite, Mn3O4; and manganite, MnO(OH).

Manganese ores may accumulate in metamorphic rocks or as sedimentary deposits, frequently forming nodules on the sea floor (since the 1970s many schemes have been put forward to harvest deep-sea manganese nodules). The world's main producers are Georgia, Ukraine, South Africa, Brazil, Gabon, and India.

In This Photo:Mineral rhodochrosite (manganese(II) carbonate) in which the deep red color is due to impurities, not manganese



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