Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)(Nb, Ta)2O6], is a black mineral group that is an ore of niobium and tantalum. It has a submetallic luster and a high density and is a niobate of iron and manganese, containing tantalate of iron. This mineral group was first found at Haddam, Middlesex County, Connecticut, in New England, USA.
Columbite has the same composition and crystal symmetry (orthorombic) as tantalite. In fact, the two are often grouped together as a semi-singular mineral series called columbite-tantalite or coltan in many mineral guides. However, tantalite has a much greater specific gravity than columbite, more than 8.0 compared to columbite’s 5.2.CathayPhillips Columbite Mineral Processing Machine are widely used to process quartz , limestone , basalt, chrome , dolomite, feldspar, fluorite, kaolin ore, marble , granite , iron ore ,copper ore.
The first step in Columbite Stone processing is a primary cutting or shaping of the material. This is often accomplished for Columbite Stone using a circular blade saw, but a splitter or hand tools, such as axes and mauls, can also be implemented. When operating a circular saw, a continuous stream of water over the saw is required in order to dissipate heat generated by the process; sufficiently elevated temperature can cause major machine and material damage.Our Columbite Stone Production Line is made of stone crusher plant ,grinding mill machine ,vibrating feeder ,vibrating screen,conveyor belt and so on materials.