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Nickel deposits have weathered its original source and magma accumulation, but more scattered, the concentration of nickel in the industrially valuable ore body occurred during the processes of weathering and decomposition of the primary nickel-containing rocks.
Cobalt
Cobalt deposits belong to different genetic types and this is usually complex deposits containing cobalt along with the minerals of nickel and platinum deposits of magmatic origin.
Deposits of copper ore are widely distributed, industrial clusters of the metal are known for all conditions of ore formation, magmatic and hydrothermal sedimentary up.
The contact deposits of copper ore deposits are characterized by irregular, located at the contact between the igneous and sedimentary rocks; they burst open, usually lime composition.
The group of hydrothermal deposits is the world's largest deposits of copper-porphyry ores presented blocks of igneous rocks of granitoid
Composition, crossed by numerous small quartz veins containing sulphides of copper. Surrounding rocks contain poor scattered disseminations of copper minerals. Stocks of ores and metals in the deposits of this type are estimated hundreds of millions of tons of ore, but copper is poor, rarely exceeding 0,5 ° / Fr. Surface oxidation processes often create in such fields enriched zone of secondary copper sulfides.
Gangue minerals of this deposit are quartz, calcite, garnet, and so on, ore - galena, sphalerite and pyrite.
The most numerous and is characterized by hydrothermal polymetallic deposits formed nA intermediate depths at relatively low temperatures in the so-called mesothermal conditions. |