二、矿区勘查工作简况及矿产资源储量申报情况
(一)矿区勘查工作简况
本区工作程度较低,仅开展了区域性的地质调查工作。上世纪七十年代山西省地矿局区调队开展了包括本区在内的1/20万区域地质矿产调查工作,八十年代山西省地勘局214队在横岭关一带开展了1/万地质调查、地矿部航测大队进行1/5万高精度航空磁测,上述工作均提交有相应的地质工作报告。
2005年中条山有色金属集团有限公司地质勘查院在该区进行了地质普查工作,通过地质填图、工程揭露、取样测试等手段,大致查明了矿体赋存特征及规模,估算了资源量。完成1:2000地形地质草测2.1km2,坑探22m,槽探359.2m3,钻探941.1m,采集基本分析样198件,编制了普查报告。
(二)矿产资源储量申报情况
《报告》根据国土资源部2002年颁布的《铜、铅、锌、银、镍、钼矿地质勘查规范》(DZ/T0214-2002),采用一般工业指标:铜边界品位≥0.3%,最低工业品位≥0.5%,最小可采厚度≥2m,夹石剔除厚度≥2m。沿走向200m工程间距控制,倾向工程外推50m范围内稳定的矿体划为333,但工程见矿的小条矿体及上一级资源量外推部分划为334?,采用垂直平行断面法估算资源量,估算出铜金属333+334?资源量5778.75吨,其中333资源量5236.33吨。
华译网上海翻译公司曾经翻译过大量有关矿区勘查工作简况及矿产资源储量申报情况资料文件,Beijing Chinese Subtitling Translation Service Agency has translated many technical documents about Introduction of the survey and application of mineral reserve.
2. Introduction of the survey and application of mineral reserve
(1) Introduction of the survey in this mining area
The exploration level in this area is relatively low, only regional geological survey was conducted. In 1970s, Regional Survey Team of Shanxi Geological and Mineral Bureau accomplished a 1:200000 regional geological mineral investigation and had this area included. In 1980s, 214 Team of Shanxi Geological Investigation Bureau conducted a 1:10000 geological survey in Hengling area, and the Aerial Survey Team of Geological and Mineral Ministry finished a 1:50000 high-resolution aerial magnetic survey. Related works have corresponding reports.
In 2005, Geological survey institute of Zhong Tiao Shan Non-ferrous Metal Group Corporation Limited accomplished a geological survey in this area. Based on geological mapping, exposure, sampling and testing, existence character and scale of ore bodies was basically clarified, the reserve evaluation was conducted. The main workload were 2.1km2 geological draft mapping, 22m pitting, 359.2m3 trenching, 941.1m borehole, 198 basic analyses samples, and a survey report compiling.
(2) Reserve application
Based on the Geological survey regulation of Cu, Pb, Zn, Ag, Ni, Mo deposit (DZ/T0214-2002) published by Land and Resource Ministry in 2002, following industrial criteria were employed in the Report: marginal grade of Cu ≥0.3%, minimum industrial grade ≥0.5%, minimum workable thickness ≥2m, the rock eliminating thickness ≥2m. Stable ore bodies within project of 200m interval along strike, and within 50m extrapolation along dip project is delineated as 333; while small ore bodies exposed by projects and the extrapolated outer range of 333 is 334?. Calculated by method of vertical parallel section, the Cu metal reserve 333+334? is 5778.75ton, in which 333 reserve is 5236.33 ton.