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。
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。
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。
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。
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。
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。
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。
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。
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。
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。
At last, exploring guides for placer gold deposit are pointed out on the base of study of gold source, placer gold distributive features and enrichment law.
结合金的来源、矿床的分布特征和富集规律，指出了该区今后砂金找矿方向。
The composition and characteristic of suspended matter from industrial wastewater of placer gold and the experimental results of natural settling were reported.
本文介绍了砂金生产废水中悬浮物的组成、性质以及自然沉降试验结果；
Sichuan Province is one of the placer gold producing areas in our country, Over the whole province there are about 30 gold placers and more than 200 mineral occurrences.
四川已知有砂金矿床约30处，矿点200余处，民采点数百处，是我国主要的砂金产区之一。
These examples illustrated the economic benefit of the recovery of magnetite, garnet, rutile, gregorite, zircon and building sand that were mined in the placer gold mine.
文中例举的事实表明砂金矿山回收磁铁矿、石榴石、金红石、钛铁矿、锆石及建筑砂石所收到的经济效益。
High valuation and great attention are also given to placer gold deposits and vein gold deposits, which are the main sources of gold in the different parts of our country.
对全国各省(区)金的主要来源的砂金矿床和脉金矿床，也给予很高评价与重视。
It could manufacture products with the effects of laser, crazing, placer gold, bright gold, grit finish, pearl light, crystal, hollow cutting, black nickel and invisibility.
可制作镭射、网纹、沙金、亮金、磨沙、珠光、水晶、镂空、黑镍、隐形等各种效果的产品。
The experience of remining placer gold in Laozuoshan Gold Mine in the past 5 years was introduced. The interior management and technical reform of the gold dredge were summarized.
介绍了老柞山金矿5年来砂金复采所取得的经验，并对采金船的内部管理以及采金船的技术改造进行了总结。
This area , where have abundant gold mineralised material and favourable geological settings , is a prospecting target area for gold placer in Southern Liaoning .
本区砂金主要来源于岩金矿和含金地层，成矿物质丰沛，成矿地质条件优越，是辽南砂金成矿的远景区。
The writer takes Baishui gold placer as an example and suggests a "synthetic block method"for the calculation of gold placer reserves.
作者以白水砂金矿为例，提出合成块段法计算砂金储量的方法。
Indonesia is rich in gold placer resources.
印度尼西亚砂金资源丰富。
Geological effects of the method have been also studied by these calculating results through the method for prospecting gold-placer in the north of Huma county in Heilnogjiang province.
文中通过对于黑龙江省呼玛河北部地区前寒武系砂金资源总量予测逻辑信息法的计算结果分忻，研究了该方法的地质效果。
Then, dispersal gold placer within the intermediate store body was enriched in gravel bed of detention in river bed after many times intermittent elevation, and the gold placer deposit was formed.
当地壳多次间歇性上升后，使砂金中间储存体中分散的砂金集中富集在河床滞留砾石层中，从而形成砂金矿床。
The Luohe gold-bearing Placer was formed by the intensive denudation of the dispersive mineralization of gold in the upper catchpit.
洛河砂金矿是在上淤汇水盆地中金的分散矿化被强烈剥蚀下形成的。
The calculation of gold-placer reserves shows that incorrect calculation methods have brought a great many of disadvantages in the gold production with dredgers.
本文对砂金矿床储量计算现存的某些问题提出了自己的看法，指出了由于不正确的计算方法给采金船生产带来的某些危害。
The studied platinum - gold placer occurs in Quaternary alluvial - diluvial a piedmont valley of ultrabasic rocks, Northwest China.
该铂-金砂矿产于超基性岩体山前谷地的第四纪冲积-洪积层中。
Distribution of gold placer deposits is closely related with gold-bearing horizon, morphology and tectonism.
使金重新分布，砂金分布与金源、地貌和新构造运动关系密切。
Thus, an intermediate store body of formation gold placer was formed. Being raised earth crust intermittently, havigng affected of sanking stream, gold placer and gravel were retained…
当地壳多次间歇性上升后，使砂金中间储存体中分散的砂金集中富集在河床滞留砾石层中，从而形成砂金矿床。
This primitive form of placer mining is still used in some places for panning gold.
这种原始的砂矿开采形式至今还在一些地方用来淘金。
This primitive form of placer mining is still used in some places for panning gold.
这种原始的砂矿开采形式至今还在一些地方用来淘金。
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