Mining and supply of black manganese in Brazil – Hydraulic Cone Crusher
2012-06-27
Mining and supply of black manganese in Brazil is more and more popular.Many investors want to invest the Mining of black manganese in Brazil.
Hausmannite tetragonal system, the crystal was a square bipyramid, usually as granular aggregates. The color is black, streak brownish orange or reddish brown. The semi-metallic luster. Hardness 5.5, specific gravity 4.84. Hausmannite is formed by the