The Luannigou ore field riches with alluvial gold of Quaternary Period and is the favorable target for rock gold.
乱泥沟矿区第四系砂金矿产丰富，是寻找岩金的有利靶区。
This paper has made a detailed description of the possible ways to raise the recovery of fine alluvial gold from clay-bearing alluvial ore.
本文就提高含泥细粒砂金的几种主要途径，进行了较翔实的论述。
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