The high content of iron in the Earth's crust, a variety of geological environments and conditions of concentration led to numerous types of iron ore, other than as a wide range of the size of their reserves. Total mineral resources base of iron ores of the world is characterized by four main types of geological and industrial fields that have the most resources and reserves, of which produced almost all of the commercial ore:
1 - magnetite ore deposits in the ferruginous quartzites and shales of crystal panels, which are localized in the large iron basins. Reserves of this type make up 71.3% of the world. The largest of them are located in Russia, Ukraine, India, Gabon, Guinea, South Africa, Brazil, the People's Republic of China (PRC), the Republic of Venezuela, the country of the maple leaf, the U.S. and Australia.
2 - sedimentary and volcano-sedimentary deposits occurring in the coastal marine sedimentary or volcanic-sedimentary sequences. Deposits of this type are 11.4% of world reserves. They explored the territory of Russia, Ukraine, Kazakhstan, China, the U.S., Australia and some countries in Europe and North Africa.
3 - magnetite ore deposits in folded zones of ancient platforms and platforms in the sediment cover (7.3% of world reserves). The largest deposits of this type are located in Russia, Vietnam, Kazakhstan, Iran, Turkey, United States, Peru and the Republic of Chile.
4 - and magmatic titanomagnetite ore is 6.5% of world reserves. Deposits of this type are located in Russia, Sweden, Tanzania, Uganda, South Africa, Turkey, Iran, the United States and in some other countries in Europe and Africa.
Minor type deposits add up to just 3.5% of world reserves. They are represented by glandular weathering crusts (Albania, Greece, the Philippines, Cuba, and tropical Africa) and modern coastal marine placer deposits (Indonesia, the country of the Rising Sun, New Zealand, South Africa, Bolivia and Brazil).
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