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西天山135号航磁异常点由于地质条件的限制,大型勘查设备测量和探槽揭露工作很难开展;此外,受气候条件限制,适合查证工作的时间较短。因此,采用X荧光分析技术结合传统物探方法的技术路线,在航磁异常查证阶段综合采用地面高精度磁法测量、γ能谱测量、野外现场X荧光快速分析和岩样物性分析方法完成航磁异常的检查。根据野外X荧光分析发现135号航磁异常西南部有新的铜元素含量异常点,结合现场踏勘捡样发现孔雀石矿化现象,判断135号航磁异常西南部有铜矿化点的存在。在铜矿化区域通过大比例尺现场X荧光分析快速定位两处新发现的铜异常,并圈定了矿化范围;在工程验证阶段采用“以钻代槽”技术,结合X荧光分析和微区X荧光分析方法研究矿化展布特征、矿物成分,评价矿化价值。通过135号航磁异常查证工作,结果表明X荧光分析技术是一种快速高效、经济的勘探方法,能够缩短野外勘查周期,高效地完成异常查证及矿产勘查工作。
Due to the limitation of geological conditions, it is very difficult to conduct surveying of large-scale survey equipment and exposing of trenches. In addition, due to the limitation of climatic conditions, the time suitable for verification work is short. Therefore, X-ray fluorescence analysis technology combined with the traditional geophysical methods of technology route in the aeromagnetic anomaly verification stage integrated use of high-precision ground magnetic measurement, gamma spectrometry, rapid field X-ray fluorescence analysis and petrophysical properties analysis method to complete aeromagnetic Abnormal inspection. According to the field X-ray fluorescence analysis, it is found that there is a new point of copper content anomaly in the southwestern part of No.135 aeromagnetic anomaly, and the mineralization of malachite can be found by field investigation and pick-up to determine the existence of copper mineralization point in southwest part of No.135 magnetic anomaly. In the area of copper mineralization, two newly discovered copper anomalies were rapidly located by large-scale on-site X-ray fluorescence analysis, and the mineralization range was delineated. In the engineering verification phase, the technique of “drilling instead of groove” was used in combination with X fluorescence analysis and micro X-ray fluorescence analysis of mineralization distribution characteristics, mineral composition, evaluation of mineralization value. Through the verification of aeronautical anomaly 135, the results show that X-ray fluorescence analysis is a fast, efficient and economical exploration method, which can shorten the period of field exploration and efficiently accomplish the anomaly verification and mineral prospecting.