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  2. Manganese - Wikipedia

    en.wikipedia.org/wiki/Manganese

    This reduces all of the manganese ore to manganese oxide (MnO), which is a leachable form. The ore then travels through a grinding circuit to reduce the particle size of the ore to between 150 and 250 μm, increasing the surface area to aid leaching. The ore is then added to a leach tank of sulfuric acid and ferrous iron (Fe 2+) in a 1.6:1 ratio.

  3. Chiatura manganese deposit - Wikipedia

    en.wikipedia.org/wiki/Chiatura_manganese_deposit

    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 ...

  4. Rhodochrosite - Wikipedia

    en.wikipedia.org/wiki/Rhodochrosite

    Rhodochrosite occurs as a hydrothermal vein mineral along with other manganese minerals in low temperature ore deposits as in the silver mines of Romania where it was first found. Banded rhodochrosite is mined in Capillitas, Argentina. It was first described in 1813 in reference to a sample from Cavnic, Maramureş, present-day Romania.

  5. Pyrolusite - Wikipedia

    en.wikipedia.org/wiki/Pyrolusite

    Pyrolusite is a mineral consisting essentially of manganese dioxide (Mn O 2) and is important as an ore of manganese. [7] It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure, sometimes forming reniform crusts. It has a metallic luster, a black or bluish-black streak, and readily soils the fingers.

  6. Nchwaning mine - Wikipedia

    en.wikipedia.org/wiki/Nchwaning_mine

    The ore body was discovered in 1940 by Assmang, and led to the acquisition of a manganese outcrop. The properties on which the ore is situated were subsequently acquired by Assmang, and led to the 1975 commissioning of the Gloria mine (medium grade carbonated ore) as well as the later commissioning in 1972, 1981 and 2004 respectively of the N'Chwaning I, I and III shafts.

  7. Wad (mineral) - Wikipedia

    en.wikipedia.org/wiki/Wad_(mineral)

    Wad is an old mining term for any black manganese oxide or hydroxide mineral-rich rock in the oxidized zone of various ore deposits. Typically closely associated with various iron oxides. Specific mineral varieties include pyrolusite, lithiophorite, nsutite, takanelite and vernadite. [1]

  8. Manganese production by country - Wikipedia

    en.wikipedia.org/wiki/Manganese_production_by...

    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

  9. Manganese nodule - Wikipedia

    en.wikipedia.org/wiki/Manganese_nodule

    Manganese Nodules are therefore needed for batteries, laptops, and smartphones, in e-bikes and e-cars, solar and wind turbines as well as for the storage of green electricity. This enormous demand in cobalt sets the ocean into a new light — many countries have already staked their claims.