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gold placer
相关语句
  砂金矿
     GEOLOGICAL CHARACTERISTICS OF THE LOGAS GOLD PLACER DEPOSITS,SUMATERRIAS,INDONESIA
     印度尼西亚苏门答腊LOGAS砂金矿床地质特征
短句来源
     Important Factor of Boulder in Gold Placer Mining
     巨砾是砂金矿开采的重要因素
短句来源
     The checking computation of structural size of gold dredge in mining of gold placer
     砂金矿采金船开采结构尺寸验算
短句来源
     RESEARCH ON ORE MODEL OF FRIEND GOLD PLACER,PERU
     秘鲁朋友砂金矿床成矿模型研究
短句来源
     An approach to the calculation method of gold placer reserves
     砂金矿储量计算方法的研讨
短句来源
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  砂金
     Because the magnetism of the heavy sands nearby the gold placer is stronger than that of the other sands, the magnetic anomalies also can be measured by using high-precision proton magnetometer.
     即使是河床底部缝隙中与砂金相伴沉淀的重砂,由于铁磁性矿物含量较高,与其附近砂石之间存在磁性差异,利用高精度质子磁力仪,也能观测到比较明显的磁异常。
短句来源
     Some of gravels in gold placer are gold containing, up to 3×10 6 ~10×10 6 . From above, it is concluded that the source material for the placer is majorly the high Au containing geologic bodies, i e.,the gold deposits in the region; and minorly the low Au containing geologic bodies,i e., strata and magmatite.
     有的砂金矿体中部分砾石含金 ,有的高达 3× 10 - 6~ 10× 10 - 6 .据此认为研究区内砂金物质来源是以高含金地质体——岩金矿床(点 )补给为主 ,低含金地质体补给为辅 .
短句来源
     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。
短句来源
     Gold placer deposits are controlled by drainage system land form and source of gold materials. They occur in the special Qat river terrace and Qtpu sandy conglomerate beds. Burial depth of the deposit is 5 ̄12m,with gold placer grade between 0 131 and 0 235g/m 3
     砂金矿受水系,中低山地形地貌格局和金物质来源的控制,赋存在特定的Qat河流阶地和Qtpu层位砂砾层中,层位稳定,矿床埋深5~12m,砂金品位0.131~0.235g/m3。
短句来源
     After hydrothermal metallization, the crust in the ore area uplifted continually, that led to the intense development of weathering and denudation and the formation of sedimentary gold placer in the stream valley terrace of Darason.
     热液成矿后矿区地壳继续隆起,导致风化剥蚀作用强烈发育,在达拉松河谷阶地内形成沉积砂金矿化。
短句来源
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  “gold placer”译为未确定词的双语例句
     Mining practice of boulder gold placer
     巨砾型砂金矿开采实践
短句来源
     MINING AT XIKOU HIGH-BED GRAVELLY GOLD PLACER
     溪口高河漫滩多巨砾砂金矿床开采
短句来源
     By influencing of work scale, gold placer mineral anomalies in 1∶50000 and 1∶200000 regional geological survey are not useful value in the large scale prospecting assessments of gold deposits.
     受工作尺度的影响,以往获得的金重砂异常资料(1∶50000或1∶200000)很难在大比例尺矿产资源评价工作中得到利用。
短句来源
     Formation of Residuum and Its Role on the Gold placer Mineralization in the North of Heilongjiang Province
     黑龙江省北部风化壳的形成及其对砂金成矿的作用
短句来源
     Abstraction and refining of gold placer underwent reducing of gold solution,nitric acids removing,2 times dissolving of gold placer and Aus reducing.
     砂金的提纯与精炼要经还原Au液、排除HNO3和砂金的2次溶解及Au的还原。
短句来源
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  gold placer
In southern Chile, with a mild and rainy climate, high levels of heavy metals have been detected in many gold placer deposits.
      
The report describes gold placer extraction and beneficiation operations with specific reference to the wastes associated with these operations.
      
The profile section is followed by reports on site visits conducted by EPA to gold placer mines in Alaska.
      
The purpose of this profile is to provide additional information on the domestic gold placer mining industry.
      
This report briefly characterizes the geology of gold placer deposits and the economics of the industry.
      


The paper has analysed and discussed the calculating processes of the method of the logic information,the principles to distingush the defferent markers of the targets,the stable features of the model and the calculated method of the marking information weight. 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.

本文剖析了逻辑信息法的计算过程,研究了对象区分标志的确定原则,分析了模型稳定性的特征,讨论了标志信息权的计算方法。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。

The calculation of gold-placer reserves shows that incorrect calculation methods have brought a great many of disadvantages in the gold production with dredgers. The problem involves the following aspects; the important role days the correct application of the grade indices of mixed sand samples to the calculation of the reserves of ore deposits; the relationship betweeu the method and principle (showing the grade of the mixed sand taken from mono-drill engineering) and the dredger design and...

The calculation of gold-placer reserves shows that incorrect calculation methods have brought a great many of disadvantages in the gold production with dredgers. The problem involves the following aspects; the important role days the correct application of the grade indices of mixed sand samples to the calculation of the reserves of ore deposits; the relationship betweeu the method and principle (showing the grade of the mixed sand taken from mono-drill engineering) and the dredger design and production; and the disposal of the problems in locating ore bodies.

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。着重论述了正确运用混合砂品位指标在矿床储量计算中的意义;单项钻孔工程混合砂品位表示方法、原则与采金船设计、生产的关系;关于矿体圈定中某些问题的处理。

According to the metallogenic process and occurrence, the placer gold deposits in China could be divided into 12 types and brief descriptions about the mineralization features and economic perspective for each placer gold type is made in the paper. A great deal of exampies are provided to summarize the ore-forming conditions, geological settings, and enrichment regularities of the gold placer deposits in China. It is concluded that the metallogeny of placer gold in China is characterized by...

According to the metallogenic process and occurrence, the placer gold deposits in China could be divided into 12 types and brief descriptions about the mineralization features and economic perspective for each placer gold type is made in the paper. A great deal of exampies are provided to summarize the ore-forming conditions, geological settings, and enrichment regularities of the gold placer deposits in China. It is concluded that the metallogeny of placer gold in China is characterized by multi-source and multi-stage enrichment. Geomorphic abnormal zones and flood alluviation are believed to have played an important role to the forming of placer gold deposits. On the basis of this study, x placer gold areas and 33 placer gold prospects are outlined and their potential reserves predicted respectively.

我国砂金点多面广,很多江河水系都有砂金.为实现黄金生产发展的规划目标,当前加强砂金地质工作,对我国发展黄金生产建设具有重要现实意义.

 
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