There are lll Fe deposits in BS in Yunnan, total reserves 3216 million t, including 1127 million t temporarily difficult of utilization. Moreover, there are few rich Fe deposits, many ores difficultly sor- ting, distribution far and borderer, which can't meet the requirement of economic development. The sorting prob- lem of siderite and P - high ore must be solved. The achieve the breakthrough in deep ore prospecting. perspective magnetic anomaly supplement can be desirable to.
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