The change of ore occurrence is the result of ore expansion and contraction, and branch recombination and thinning out.

指出矿体产状变化是矿体膨胀收缩、分支复合和尖灭再现的结果。

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For prospective iron ore area or an anomaly zone, where the ore occurrence regularity has not been thoroughly studied , detailed geological investigation and mapping should be made.

对已工作过的铁矿远景区（带），而矿产赋存规律尚不清楚的区段或磁异常区，应加强研究和填制地质图；

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Compared with other production section, south section ore scale, shape and occurrence are different, and it is difficult to control mining dilution rate in this section.

狮岭南地段矿体规模、形态、产状特征与其他主生产地段相比，差异很大，该地段采矿贫化率较难控制。

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