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Manganese is a chemical element with the symbol Mn and atomic number of 25. It is found as the free element in nature (often in combination with iron), and in many minerals. The free element is a metal with important industrial metal alloy uses. Manganese ions are variously colored, and are used industrially as pigments and as
Kabundi Manganese Mine is located in Kabundi, Serenje, Central Province. [136] [137] Operated by Kabundi Resources Ltd which is 100% owned by ZCCM Investments Holdings (ZCCM-IH) and encompasses a Large-Scale Exploration Licence for exploration for commodities which include manganese, cobalt, copper, zinc, limestone and precious minerals. [136]
The Georgian Manganese LLC (GM) is the Georgian subsidiary of the British company Stemcor, producing manganese and ferroalloys. The Georgian Manganese LLC owns Zestaponi Ferroalloy Plant in Zestaponi (through JSC Ferro) and Chiatura mine in Chiatura(through JSC Manganumi). [1] [2] It owned Tao-Privat bank in Georgia from 2007 to 2014. [3]
Manganese ores are located in ore layers of 30-35 cm in the amount of 3-18 pieces and alternate with opoka (a type of carbonate-siliceous sedimentary rock [6]). Carbonate and oxidized layers are located in the upper part, and oxide ones in the lower part; in total, oxide ores – 26.5%, carbonate ores – 45.1%, oxidized – 15% and mixed ...
Organomanganese chemistry is the chemistry of organometallic compounds containing a carbon to manganese chemical bond.In a 2009 review, Cahiez et al. argued that as manganese is cheap and benign (only iron performs better in these aspects), organomanganese compounds have potential as chemical reagents, although currently they are not widely used as such despite extensive research.
The lowest level of the ore zone is a 0.1 to 0.5 metres (3.9 in to 1 ft 7.7 in) layer of massive manganese oxides and hydroxides with some manganese carbonate (rhodochrosite). Above this is the main ore zone, a 3 to 9 metres (9.8 to 29.5 ft) layer of plates of similar minerals between bands of clay, silica and iron bearing material.
Falconbridge Nickel Mines Limited was a Canadian mining company with operations in 18 countries, involved in the exploration, mining, processing, and marketing of metal and mineral products, including nickel, copper, cobalt, and platinum.
Reports also mention such sources as contaminated drinking water, [11] and fuel additive methylcyclopentadienyl manganese tricarbonyl (MMT), [12] which on combustion becomes partially converted into manganese phosphates and sulfate that go airborne with the exhaust, [13] [14] [15] and manganese ethylene-bis-dithiocarbamate , a pesticide. [16]