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Consider a group of non-ferrous metals.
. Beryllium
Beryllium - a characteristic element pegmatite dikes of granitic magma, where it occurs in the form of large crystals of the mineral beryl, containing 14,1% beryllium oxide. Large beryl crystals represent a raw material for the smelting of this light metal, and transparent and nicely colored beryl difference - emerald green, and blue aquamarine gemstones are ..
. Zirconium
Zirconium is a common element in the earth's crust, but usually occurs in a dispersed state in the form of microscopic crystals of the mineral zircon in granites, and particularly in the alkali syenite, which meets and mineral eudialyte containing up to 13% zirconium oxide and 3% rare earths.
Tantalum and niobium
It's rare metals, commonly found together and are concentrated in the minerals columbite and tantalite are typical of pegmatites and tin deposits of high temperature origin.
Many ore deposits, exposed at the surface, undergo significant changes under the influence of precipitation, temperature fluctuations and mainly under the influence of groundwater seepage are sometimes at significant depths.
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