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小茅山多金属矿区包括:陈家桥、吴宅、姚家郎等矿段。陈家桥矿段已于1969年提交了勘探报告,1974年正式开采。原报告所交储量迄今已开采殆尽,经济效益极佳。本文在前人工作的基础上,对开采现已接近“尾声”的陈家桥矿段进行了回访,对矿段地层时代的划分和归属、矿段构造的配套、探采结果的对比、新矿体的发现、矿床成因的探讨等做了一些工作,取得了一些新的认识,并在此基础上初步总结了小茅山多金属矿区成矿模式,供同行们参考。一、矿段回访对老采区坑道进行了系统的踏勘,取得了很多第一性资料,经过新旧资料的分析研究,对本矿段有了一些新的认识。 (一)地层时代的划分及归属
Small Maoshan polymetallic mining areas include: Chen Bridge, Wu house, Yao Jialang and other mines. Chen Jiaqiao mine section has submitted an exploration report in 1969, formal mining in 1974. The original report submitted so far has been depleted reserves, excellent economic returns. Based on the work of predecessors, this paper made a retrospective study on the mining section of Chenjiaqiao, which is near the end of the mining process. The division and ownership of the stratum age, the matching of the mining section structure and the exploration and mining results are compared. The discovery, the genesis of the deposit to do some work and made some new understanding, and on this basis, a preliminary summary of Xiaomaoshan polymetallic ore district metallogenic model, for colleagues reference. First, the mining section of the visit to the old mining section of the tunnel system reconnaissance, made a lot of first-class information, through the analysis of old and new data, the mine has some new understanding. (A) stratigraphic division and attribution