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1984年我队在辽宁新宾县开展1/5万分散流普查。面积400平方公里,共采集样品1800余件。样品由棒磨筒加工,由于棒磨筒和棒杆本身含钼,致使被研磨样品受污染,造成920件(200平方公里)钼的分析成果报废,中途停止了分析,其过程如下。 1.样品加工方案样品加工按“冶金地质成矿区(带)地球化学普查技术规定”要求进行(流程略),正样经棒磨筒研磨过160目,送队化验室分析。 2.问题的发现当化验室报出第一批(920件)成果时,发现样品中钼的含量普遍偏高(6～20ppm)。工作
In 1984, our team carried out 1/50000dispersion flow survey in Xinbin County, Liaoning Province. Area of 400 square kilometers, a total of more than 1800 samples collected. Samples were machined from a rod mill. Due to the presence of molybdenum in the rod mill itself and the rod itself, contaminated samples were contaminated, resulting in the end of analysis of 920 pieces of molybdenum (200 km2). The analysis was halted as follows. 1. Sample processing program Sample processing according to “Metallurgical Geological Metallogenic Zone (with) Geochemical Survey Technical Regulations” requirements (the process omitted), is the same through the grinding rod 160 mesh, send the team laboratory analysis. 2. Problem Discovery When the laboratory reported the first batch of (920) results, it was found that the content of molybdenum in the sample was generally high (6 ~ 20ppm). jobs