alluvial gold

基本解释

This paper has analysed the Hunan alluvial gold deposit and its present mining status.
本文分析了湖南砂金矿床及砂金的开采情况。
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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。
Shenzhen Zen alluvial gold velvet with gold, silver and copper as raw material, the electric casting is hollow, some manufacturers use is resin embryoid body, process and value will vary.
深圳天禅绒沙金采用的是金银铜为原材料，电铸件是空心的，有些厂家采用的是树脂的胚体，工艺和价值都会有所不同。

He is one of many who have flocked to the Kangari hills in southern Sierra Leone to find small fortunes in the hard graft of alluvial gold mining.
"Because most of the gold deposits found in Sierra Leone, which had been worked on, were from the alluvial deposits.