1·The coefficient of dissolution can indicate the source of placer gold.
溶蚀系数可指示砂金是近或远原生源金矿。
2·A new technic of purifying gold, silver from placer gold without pollution was proposed.
提出了一种无污染从砂金中提纯金、银新工艺。
3·The associated minerals are the important indicator of the genesis and enrichment of placer gold .
伴生矿物是砂金成因和富集规律的重要指示标志。
4·A placer gold area is usually distributed in the flowing regions of plain terrain, belt-like rivers.
砂金地区一般分布在地形平坦、呈带状的江河流域。
5·The source materials of the placer gold deposit in the area are from skarn — typed Au — Ag — Cu — Fe polymetallic ore.
矽卡岩型金银铜铁多金属矿床等是本区砂金矿的物质来源。
6·The regenerated mineralization of placer gold by thawing action are also proved through simulation, contrast and experiment.
并通过模拟对比实验结果，论证了融冻作用使砂金再生成矿。
7·Placer gold samples are rich in light REE, the characteristics of REE contents of which partly inherited from hard rock gold.
砂金样品则以较富集轻稀土为特征，稀土元素含量继承了岩金的部分特点。
8·Owing to the metallogenetic inheritance of placer gold and mountain gold, their liquid-inclusion composition are very similar.
由于成矿作用的继承性、砂金的气液包体成分同原生的金十分相似。
9·Thus it will guarantee the primary placer gold sampling and reduce the Labour intensity of workers, in order to raise the drilling efficiency.
从而能保证取出原生矿样，并降低工人的劳动强度，实现钻进的高效率。
10·The REE contents of 84 placer gold samples and 7 hard rock gold samples in Heilongjiang province are determined by plasma mass spectrographic analysis.
对黑龙江省84个砂金样品及7个岩金样品，用等离子质谱仪分析了它们的稀土元素含量。