黑岚沟金矿矿石工艺矿物学研究

通过对蓬莱黑岚沟金矿矿石进行原矿光谱半定量分析,化学分析和筛分分析,阐述了金矿石的化学成分及其工业价值。通过镜下鉴定和电子探针分析,查明了金矿石的矿物组成,矿石结构和构造特征,进而确定了矿石类型。在此基础上研究了载金矿物特征,了主要描金矿物的解离度。通过对金粒化学成分的研究,得出了矿石中的主要含金矿物。研究表明,金粒主要呈裂隙金和包体金嵌布于石英中;金粒形态主要为长角粒状,针线状,板片状和角粒状。     

http://www.sciencedirect.com/science/article/pii/S1674987113000790

The Heilangou gold deposit is located in the northern QixiaePenglai gold belt, which is one amongst the three large gold belts in the eastern Shandong Province （Jiaodong Peninsula）. The ore body has formed within the Guojialing granite. In this study, we report the mineral chemistry of pyrite, as well as the S, Pb, and HeO isotope data of the Heilangou gold deposit. The chemical composition of pyrite in the Heilangou gold deposit indicates that the associated gold deposit is a typical magmatic hydrothermal one. The geochemical signatures and crystal structure of pyrite show that the ore-forming materials have been derived from the crust. The S isotope data of the pyrites from Heilangou show an overall range from 5.5 to 7.8＆amp;and an average of 6.7＆amp;. The S isotope data in this deposit are similar to those from the deposits in the Jiaodong gold belt. The Pb and S isotope variations are small in the Heilangou gold deposit. The 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb ratios are 17.4653e17.5958, 15.5105e15.5746 and 38.0749e38.4361, respec-tively. These data plot between the lower crust and the orogenic belt. The Pb isotope data in the Heilangou gold deposit are similar to those in the Linglong gold deposit. From the Qixia gold area （the Liukou and Majiayao gold deposits） to the MupingeRushan gold belt （Rushan gold deposit） to the ZhaoeYe gold belt （the Linglong, Sanshandao and Jiaojia gold deposits）, the 206Pb/204Pb ratios progressively increase. The DeO isotope data obtained from quartz separates suggest that the ore-forming fluid was similar to a mixture of magmatic and meteoric waters. These results suggest that the ore-forming elements were primarily from source fluids derived from the lower crust.     

土壤地球化学测量在山东蓬莱地区普查找金的效果

1986～1988年在蓬莱地区采用1/2.5万土壤地球化学测量普查找金,圈定了大量异常,对部分有望异常进行了评价,划分了找矿远景区,为进一步的地质找矿提供了地质基础资料和信息.并首先发现黑岚沟金矿;该区现已找到了几十个矿床(点),其中大型金矿床2处.文章阐述了土壤地球化学测量的方法技术和找矿效果.     

黑岚沟金矿7号脉采矿方法改进与实践

黑岚沟金矿7号脉赋存于黑云母花岗岩混合带中，全长800多m，矿脉呈雁行状排列。根据该矿脉的地质特征和开采条件，利用短木桩、锚杆、小型永久矿柱进行支护，改进了原采矿方法，并取得了较好的经济效益。