Madini ya sumaku yana sifa dhabiti za sumaku, haswa ikiwa ni pamoja na ore moja ya sumaku, vanadium titanium sumaku ore, magnetite na oksidi ya chuma mchanganyiko ore, magnetite multi-metal symbiotic ore, nk. Magneti imegawanywa katika CHEMBE coarse, kati faini chembe, chembe laini katika magnetite, ambayo ...
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