The Mineral Resource Assessment Of Boron In Eastern Liaoning

The eastern Liaoning provinces constitute an important borate deposits resource area,in which borate deposits are distributed in Paleoproterozoic strata as a zone from west Yingkou to east Fengcheng,Kuandian.Boron occurs of the region within in the Liaoning-Jilin rift,geological structure in the area is complex,the deterioration distortion function is obvious, the geological condition of mineralizing is superior,Boron in China is mainly distributed in the region, the region is looking for favorable areas for boron ,besides, the borate deposits is the superiority ore to plant.Based on the establishment of comprehensive interpretation spatial database and the map base of geology,physical exploration, geochemical exploration by utilizing the prediction system of the comprehensive information mineral resources in the study zone, a comprehensive information prospecting model and a forecasting model of prospecting comprehensive were established. The location and quantitative assessment was carried out in the target region of borate mineral resources concentration region with computers. The following is the Production of the applied research:(1)By studying geological background of boron,ore-bearing strata characteristics of boron,typical deposit characteristics of boron,deposit characteristics of boron in the Liaodong area.Combining the latest research results of boron ore genesis in the Liaodong area. That the boron is metamorphosed sedimentary exhalative deposits.(2) By analyzing the characteristics statistical parameters of 37 geochemical elements in the work area,the results show that,characteristics of boron is strong concentration, strong accumulation and strong discrete,boron reflected with high background characteristics and better basis for mineralization in the work area;By using multivariate statistical methods, analysis of the relationship between boron and other elements,the results show that,Boron is closely related with the Co,F,Sn,W,Y,Fe₂O₃,MgO in the work area;The B element as the main element, using overlay analysis method to study spatial relationships of seven elements and B elements,they were divided into four geochemical composition, respectively:the element composite anomaly of B-MgO;the element composite anomaly of B-MgO-Fe₂O₃:the simple element composite anomaly;the complex element composite anomaly;The element composite anomaly of B-MgO and the element composite anomaly of B-MgO-Fe₂O₃ has certain relationship with boron mineralization.(3)By analyzing the rock (ore) physical properties data in the work area,understand the physical properties of rock and formation. Combined with the application purpose of geophysical data,determine the principles of interpretation and the treatment methods of geophysical data in the work area,And discusses the interpretation of the results.(4)In typical deposit of research and regional metallogenic regularity based on,Established the prospecting model of integrated information of boron in the Liaodong area,Use geological unit method to draw statistical unit 75. In these units, 19 units containing minerals, 56 unit is not mineral. And the acquisition, conversion and extraction variables.(5)Using the characteristic analysis, the quantification theory IV and the Q cluster analysis to analyze the mineralization probability of statistical unit,them into A, B, C, D four grades. D-level statistical probability is the smallest unit of mineralization, and to discard it. Finally, we get A-level statistical unit 5, B-level statistics unit 20.(6)Using the method of logical information, establishment the quantitative prediction model of boron resources in eastern Liaoning, Detection of the 19 test units using this model, Accuracy rate was 92.3%, this shows that the model is reliable. By using the method of logical information forecasting resources, The result is the amount of 32,426,900 tons of additional resources in the Liaodong area.(7)In the next section the author use the Volume method of estimating parameters of ore-bearing geological to set up the quantitative prediction model. finally using the method calculate the amount of resources 33,459,600 tons. This method is the potential for mineral resources assessment project in 2010 to determine the use of a quantitative prediction of the new method.(8) This is the first application of geochemical block theory to solve the problem of non-metallic mineral resource estimation, and improve the evaluation of mineral resources based on geochemical block. Through the various geochemical blocks were compared with the known mineralization to determine the partition method of prospective areas; By introducing the surface boron density, abnormal strength, block structure, the vision of the concepts of area, with pedigree chart, Screening of the prospect area and location prediction; By introducing the probability of mineralization (enrichment factor), so based on the material basis of geochemical blocks more scientific method of quantitative prediction. Ultimately the evaluation of mineral resources based on geochemical block has a total area forecasting, statistical unit, the positioning unit forecast and unit quantitative predictions.Through researching 1:200000 map sheet geochemical datas on B in about 20000 km² region of East of Liaoning by using geochemical Block Theory, we delineated 3 geochemical blocks and 2 geochemical anomalies. Calculate the amount of 41,459,300 tons of resources.Through systematically searching the characteristic s of geochemical blocks in study area and the characteristic of boron deposit, we determined 5-grade geochemical sub-volume as prospective area, and we thought the ore potentiality of prospective area were relative with the block area,the surface metal density,the anomaly intensity and the overlap level of block. Divided favorable metallogenic perspective areas 9. We divided 4 A level prospective areas, includingâ…¢111-2,â…¢112-1,â…£111-1 andâ…¤111-1.On the foundation of research geological background, we think the enrichment factors, such as formation and structure, and the ore-forming material base are the two necessary conditions. So in the course of calculation to resource extent, we should think about the influences of them. Finally, we set up the ore prospecting probability-geochemical block ore prospecting method, and use it to quantitatively assess the amount of B ore in Liaodong rift. Calculate the amount of 27,381,700 tons of resources(vision district 15, minus the amount of proven resources).(9)Comparing prediction results of quantitative forecasting methods, they have little difference. This shows the validity of the quantitative prediction. Comprehensive analysis, that the scale of resource potential is 33,459,600 tons in the Liaodong area. The results show that the large resource potential of boron in eastern Liaoning and With objective reality.(10)Comprehensive analysis of location prediction results and results of quantitative prediction, formed a survey deployment classification in the Liaodong area.â… + level were obtained three prospective areas,â… level prospect area 8. It pointed out the future direction of prospecting work of boron.