馆藏地质标本化学分析取样与代表性研究

发布时间：2018-04-14 10:01

  本文选题：取样 + 化学分析　； 参考：《中国矿业》2017年S2期

【摘要】：目前,馆藏地质标本的化学分析取样,一是参照地质行业或石油行业标准,其取样代表性范围较广,一般为矿床或矿区级别,取样量非常大。如此大范围的代表性,除首次系统性取样外,不适合馆藏样品的取样工作。二是参照一些国内外馆藏样品取样规定,取样量受到严苛限制,不能保证拥有较好的取样代表性。馆藏地质标本的后续研究,主要针对的是馆藏样品,取样代表性范围也只限于馆藏样品。并且按地质矿产采样要求,所采样品应有充分的代表性。为了解决上述取样问题,本文以典型矿床黄沙坪铅锌矿的部分标本为实验对象,分析了馆藏地质标本的取样量(百分比)与样品代表性之间的规律。绝大部分元素测试结果表明,分取样量在30%时,其各元素含量拥有70%的代表性。通过这次研究,实验并分析了取样代表性的评估方法,探讨了实物资料取样代表性强、标本破坏性小的最佳取样方案。
[Abstract]:At present, the chemical analysis sampling of geological samples in library is based on the standard of geological industry or petroleum industry, and its representative range is relatively wide, which is generally ore deposit or mining area grade, and the sampling amount is very large.Such a wide range of representativeness, except for the first systematic sampling, is not suitable for collection sampling.Secondly, referring to the sampling regulations of some domestic and foreign collections, the sampling amount is severely restricted, which can not guarantee a better representative sample.The follow-up study of geological specimens is mainly aimed at the collection samples, and the representative range of sampling is limited to the collection samples.And according to geological and mineral sampling requirements, samples should be fully representative.In order to solve the above sampling problem, this paper takes some samples of Huangshaping Pb-Zn deposit as experimental objects, and analyzes the law between the sample size (percentage) and the sample representativeness.The results of most element tests show that the content of each element is 70% when the sampling amount is 30%.Through this study, the evaluation method of sampling representativeness is experimented and analyzed, and the best sampling scheme with strong sample representativeness and small sample damage is discussed.
【作者单位】： 国土资源实物地质资料中心;
【基金】：中国地质调查局项目“全国实物地质资料汇聚整理与服务”资助(编号:121201013000150002)
【分类号】：P624
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本文编号：1748791