We analyze the structure superimposed halo characteristics of Xiaoqinling gold deposit,and establish model of deep blind ore prediction of typical gold deposits,achieve good results of searching blind ore.Through summarize the common of typical deposit,we establish structure superimposed halo model of deep blind ore in Xiaoqinling gold metallogenic belt.
Primary halo inverstigation has been carried out in Dayingezhuang,Xiadian,Shanhou,Damoqujia gold deposits which hosted in Zhaoyuan-Pingdu fault zone.Au, Ag, Cu, Pb, Zn, As, Sb, Bi, Mo and Hg elements were analyzed. Trace elements contents and their pertinence coefficients were Statisticed.All four gold deposits appeared As,most gold deposits appeared Ag,Pb,Cu,Sb,individual gold deposits appeared Mo,Bi,Zn,foreside halo As was the best indication element,we can put up exploration forecast with contents of As and other elements geochemistry abnormity.Abnormity standards of As,Au elements were compartmentalized,more than 4×10-6 of As contents were strong abnormity,1.5×10-6~4×10-6 was middling abnormity,less than 1.5×10-6 was weak abnormity; More than 35×10-9 of Au contents were strongabnormity, 10×10-9~35×10-9 were middling abnormity,less than 10×10-9 was weak abnormity.Three rules of geochemistry forecast for deposits depth were summarized,these rules had preferably forecast effect through validating.
The micro-disseminated gold deposit of Triassic of Qinling orogenic belt has not breakthrough,the discovery of Wenjiangsi gold deposit bring opportunity for this area,the gold belt of study area has been controlled in 10 km,Wenjiangsi gold deposit occurrence in the Low-Triassic slity fine sand-slity shale-carbonaceous shalecarbonaceous marl-limestone thin layer,diagenesis pyrite berry ball contains 0.5% As.Early Mesozonic plagioclase porphyritic granite veins bedding invasion the ore-bearing sediments,and bring the Mo-Bi-Te related components for mineralization.Late progression of ductile-brittle shear zone transformation,the sedimentary ore show schistosity and broken ore belt in the multi-phase and multi-stage activities.The granite veins of tectonic belt form altered rocks,ore-forming hydrothermal form lentils-lens and vein shaped ore body,and it is located in the ductile-brittle tectonic belt.Hydrothermal mineralization has multi-period and multi-stage functional features,mineralization has the features of euhedral-subhedral tiny-dip texture and structure,gold mineral is the pyrite,arsenopyrite and silicified quartz,containing a small amount of stibnite,showing Au-As-Hg-Sb geochemical assemblages.
Use of micro-testing technology, found gold occurrence in zhangshang gold deposit in three ways: First, gold was micro inclusions or were isomorphous substitution of atoms existed in the lattice of gold-gold minerals were; two is a natural gold occurrence in quartz,kaolinite and other debris between the gold particles formed between grains; Third, the existence of natural quartz gold endowed was calcite barite veins in the fissures. From the Gold Occurrence of the Causes, combined gold deposit tectonic evolution of ore formation, lithology,petrography,we believe that the deposit type gold deposit should be deposited metamorphic - tectonic hydrothermal superposition type gold deposit.
Upper Heilongjiang mineralization belt is one of our country important metal mineralization belts, is my crew current key gold ore geology investigation area, through to the area in the region mineralization geology background and the metallogenetic epoch evolution rule’s research, divides the middle Jurassic epoch warm up the fluid Au ore deposit,late Jurassic-early chalk epoch volcano lithotype Au ore deposit, late Jurassic-early chalk epoch porphyry Cu-Au-Ag ore deposit to three mineralization series, Upper Heilongjiang mineralization belt is divided into the Laogou-Yixiken Au-Cu-Mo,changying Au, 21 stand-Baoxinggou Cu-Au, Fulahai Au to four of the Ⅳ-class level mineralization belts,summarize the mineralization rule and the prospecting symbol, for further carries on the geological prospecting in this area,hascertain guiding sense.
The Yunkai metallogentic belt is one of the important metallogentic belts of nonferrous and noble metal deposits. The Luoding basin,which is Located in its nuclear department, belong to cretaceous continental fault basins. And the surrounding of the basin formed lots of metal mineral resources under the influence of fault structures and magmatic activities. The paper focus on the research of the interaction in geological factors of Mesozoic fault basin, such as geological characteristics, formation mechanism, surrounding fault structures,Magmatic rocks and mineralization。Based on the comprehensive analysis, the main conclusions are listed as follows; Mineralization of Deposits around the Luoding basin has a close relationship to geologic structure, especially mineralization deep faults and magma activity.And regional geochemical anomalies can help us to circle the prospecting target area.
Through analysis on the characteristics of metallogenic regularity of Jinlong gold deposit,according to the geological characteristics of Tongjing rock,magma and ore fluid activity center,ore-bearing and skarn,the spatial distribution of ore deposit,we summary the regularity of deposit,while researching metallogenic regularity of deep and edge of deposit,carry out prospecting forecast.
Baoxingchang porphyry copper-molybdenum-gold deposit is located in the ore district of Lijiang-Dali area,this is a porphyry deposit of more comprehensive of metallogenic series,complex ore-forming elements and unique metallogenic conditions.The geological conditions of ore area is complex,structure and magmatic activity are frequent,NW trending Jinshajiang -Ailaoshan fault zone and NNE trending Chenghai -Binchuan fault zone form structural deformation area of triangle,it become a channel of through the bottom of lithosphere,Himalayan regional strike-slip orogenic activity lead to the intrusive of mantle-crustal alkali-rich porphyry,the mineralization is closely related to alkali-rich porphyry of Machangqing.The series of antiform and syncline are ore controlling structure,such as Jinchangqing-Rentouqing,Luantongshan-Baoxingchang and so on.Machangqing alkali-rich porphyry and its contacts with wall-rock are favorable positions of Cu-Mo-Au mineralization.
There are many of ophiolite belt in the world,such as Canada's Abitibi ophiolite belt,European Alps ophiolite belt and Tethyan,Paleo-Asian ocean ophiolite belt.The veins and lenticular carbonate distribute in the ophiolite belt.The carbonate rocks and serpentinite has obvious genetic relationship,it is called snake green carbonate.Research of this special rock types at home and abroad is little,especially on its relationship with gold mineralization.East Junggar Kalamaili ophiolite zone distribute a large number of carbonate veins,it has a close relationship with gold in the belt between spatial distribution and genesis.Through geological characteristics,mineralization and diagenetic geodynamics to discuss the relationship between them.
The article analyzes the application actuality, software and data character of the existing geological and prospecting software such as SD Software, MicroMine Software, Dagital Solid Minerals Prospecting System, then points out MicroMine and SD Software had been mainly applied to ore body modeling, calculation of reserves, mine design, aoto-drawing, and so on. At the same time, points out the Dagital Solid Minerals Prospecting System can not content user practical requirement on realization method and collection efficiency to prospectingengineering. The article combines field geology practice, discusses that how to realize prospecting engineering digital geological logging form data model,data standard,logging theory,logging method,an so on.Data model and data standard can not only form optimumly the original geological logging data,but also develop and utilize expediently original geological logging data.The digital geological logging theory and method not only accord with fact,but also have the important significance to software realization.
Field observations suggest that the granite batholith is a botholith composed that is sourced magmatism during the Indochina.the type of granite is the monzogranite.Granite batholith has a SiO2 content of 68.17 to 76.23%,Al2O3 content of 12.41to14.41%,with Na2O+K2O=9.24 to 10.98% and K2O/Na2O=1.65 to 2.14,A/CNK from 0.923 to 0.965.the granite batholith has a lower total REE concentration, ΣREE content of 55.26 to 88.02×10-6， LREE/HREE from 2.71 to 10.27 ;δEu from 0.28 to 0.32;δCe content 0.81 to 0.91;（La/Yb）N from 1.79 to 11.20.chondrite-normalized REE patterns show a significant differentiation and has a obvious fractionation character of LREE and HREE primitive mantle-normalized trace element spidergrams were W-type curves.The Wuyun basin monzogranite is high-K,inferior-alkaline Ⅰ-type gramite,with lower concentration of aluminum.Its formed of postorogenic tension tectonic setting and depth of the crust and location in the intraplate.
Sanshandao gold mine is an unique undersea gold mine.Gold mining undersea faces threats,such as stope rock breaks,hard bolt,unsteady hanging wall resulting in water-inrush tunnels,or even mine flooding caused by sea drainage.The microseism monitoring technology can dynamically monitor the stability of the surrounding rocks of stopes and hanging walls in real time,thus achieving assessment,prediction,and prewarning purposes.This thesis provides the evidence for selecting the microseism monitoring system.Additionally,based on the actual situation of the Sanshandao gold mine,this thesis introduces how to deploy the microseism monitoring system,analyze the monitored data,and further assess the stability of hanging walls of Sanshandao gold mine.
A new original and innovative geophysical method (national patent) is introduced in this paper.The method uses the principle of the piezoelectric effect.It is a direct exploration method for quartz vein type gold deposits and other deposits (that have piezoelectric effects),which combines the piezoelectric effect produced by body tide and the natural potential measurement.Its implementation steps are as follows:a) laying in nonpolarized-electrodes with grid in the exploration region,the implanted depth and requirements are similar with the exploration of natural potential method.b) measuring two times the natural potential, one is at the time of high tide,the other is at thetime of low tide.According to the piezoelectric effect produced by solid tide, when there is a quartz vein type gold deposit (or galena,zinc,pyrite,copper-nickel sulfide ores and a variety of pegmatite,etc.,it will has obvious difference between the two measurements of high tide and low tide if there are no the expecting types of deposits,there will be no significant abnormalities between measurements of high tide and low tide
In this paper, multi-section cross-correlation method is used to process IP middle gradient data of Shanhou ore area. The useful anomalies can be differentiated from the error and geological background noise by using the method. The interference is suppressed and useful anomalies are highlighted by using the relevant filter.The processed result indicates the location and the relative intensity of useful anomalies.
According to the mu tation orebody of Xinhui Gold mine,we exploit the orebody using subsection preparatory working,continous mining,caving orebody using upward sector medium-lengthhole continuous extrusion method, removaling ore using carry scraper,filling withclassification tailing of the comet, and get a good result.
Aiming at such production technoloy issues as the scope of small mining, the large production scale, mutation ore occurrence, non-fitting mining barebone, squeez caving technology of medium-depth hole was applicated to solve issues above. In the mining method, safe,efficient, low-loss and low-dilution exploitation was made by means of continuous mining and back-style stage.Technology support is provided for effective development and utilization of low-grade ore and the method has broad application prospects.
The ore body type of the ⅴ# ore body in Xincheng gold mine is the typical thick broken ore body.Based on the actual situation of the mine,decide to mine the ore body with the pre-roof-controlled upward mediumlength hole sublevel mining with backfill.By the pre-roof-controlling, to ensure the roof and upper wall safety, moreover with the upward medium-length hole mining,mining the ore body safety and efficacy came true.
In order to further improve the use efficiency of cyanide tail slag resources,to solve the problem of improving production technology index, According to the current market of lead and zinc concentrate requirements，using sulfuric acid slag, except came cyanogen，Adsorption pretreatment technology，A thick and Three esau Saul chose three times flotation process，Copper sulfate do disseminated activator, Isoamyl xanthate and sulfur n combination of collector, Effectively improve the technical indexes，Reduced the silica content, ore products，To increase the economic efficiency of enterprises made a solid step,causes the enterprise to get healthy and sustainabledevelopment.
At present,the gold cyan ide filtering generally uses box pressure filter, washing operation is usually adopts thick machine, these covers an area of big, low efficiency, infrastructure, after long and industrial experiment research, vertical presses filter machine has low pressure filtration rate high, washing water.
Chai mine through the existing production process and historical data analysis and experimental research process, in production with ore to take reasonable advance out of your solution, change the dosing method grinding circuit to mainta in the [CN-],[CaO] and other measures to increase mineral recovery rate from 90.03% to 91.89%,1.86% increase.
Jiaojia gold in the construction process, driving through the construction program to improve the use of electric rake to rake the funnel to the tub with rocks, not only shorten the operation time to improve operational efficiency and reduce operating costs, with less input devices, and simple construction organization advantages of driving on the other mining projects with the reference.
Tailing ore properties and comprehensive value，high-grade tailing ore firstly is used for extracting gold by heap leaching in Jinzhou mining industry Co.,Ltd.，then used for building materials of aerated concrete block, autoclave brick,porous brick,low-grade tailing ore is indirectly used for building materials.Tailing resources is fully used by way of tailing ore extracting gold and making building materials to effectivily resolve heap of tailing ore，and to fully utilize value of tailing resources，and to give full play to mining resources.
Controlling cost is the basis for the enterprise to hence the profits. We have divided the conduction cost into three models, set up its forecasting model and the controlling system. By the controlling content, we have set up the measures.
Taipingdong gold deposit is one of important gold deposits in Huijiabao gold ore field,Southeastern Guizhou.Research the results of gold occurrence at the deposit show that gold is hosted in pyrite and arsenopyrite. Gold grains are comprised of sub-micrometer to micron size (14~0.2 μm, most at 6~0.4 μm).Phase analysis indicates that 86.37% of gold are hosted in sulfide and 6.03% of gold are free gold.Gold grains of rocky minerals are in cracks of pyrite.
Located on the southern margin of Shigou-Wushan fault in the Mouping-Rushan gold ore belt of eastern Shandong,Yinggezhuang gold deposit is one of the quartz vein type gold deposit.Gold ore-control factors are Jingshan group, NNE faults and Kunyushan granitic body.Gold ore bodies occur in cataclastic zone.On the basis of comprehensive analysis of the mining area,combined with field survey and appraisal of the polished section of the ore, studied characteristics of mineral and wall rock alteration.In the light of the features and the intercalating relationship of the quartz vein,ore fabric and the order of crystallization,ore-forming process can be divided into four stages. The wall rock alteration shows a zoning distribution pattcrn with alter gradually from vein to the border zone. The geological characteristics of gold deposit,ore control factors and the primary prospecting criteria are summarized in this paper,features of gold deposit,and pointed out that the east of the present area has a good prospecting future, which offers a favorable geological evidence for the next exploration of this area.
East Qinling Area, the east section of Qinling precious metals and polymetallic mineralization belt, overflows with rich polymetallic mineral resources, is one of the important Au-Pb-Zn-Cu-Ag-Hg-Sb polymetallic deposit-concentrated area.Many researches indicate that there are huge potentials for prospecting Au Pb-Zn Cu,Hg-Sb deposit in this region. Based on a great deal of statistics,analysis and experiments,the author made a research into stratum, structure, magmatic rock, fracture density and geochemical exploration anomalies,and made a preliminary study on geological setting of ore-forming processes, relations between the factors and the mineral deposits in this area. In conclusion,we summarize the main ore-controlling factors, predicts the mineralization geological conditions based on DPIS,and defines 58 Ⅰ-grade mineralization prospect areas,15 Ⅱ-grade mineralization prospect areas in East Qingling.
Based on the stream sediment geochemical survey,soil geochemical survey and anomaly,and with the regional metallogenetic condition,we analyzed the prospecting potential and indicators.Two grade A ore prospect areas, 2 grade B prospect areas,3 grade C prospect areas and 3 prospecting target region were confirmed,which was based on the integrated information of geology,geophysics,geochemistry and Remote Sensing.
In order to find out the deep hidden gold mine in Jinchang gold deposit,the integrated methods of geoelectrical chemistry of geo-electrochemical extraction,soil-ion conductivity and the mercury absorbed in soil are applied in the southern of the ore district,the west of Qiongbangzigou area.According to the mining of typical oreforming geological characteristics,the distribution characteristics of electrochemical anomalies and the known structures of hidden explosive breccia pipe,ring,radial in which gold mine being are very similar.Composited prospecting criteria,combined with geochemical anomalies and known works to expose cases,theⅠ, Ⅱ, Ⅲ Anomaly targets are delineated.The view that integrated electrochemical methods are used in looking for hidden gold in the area is of economic,fast and effectivefeature,and it will be used widely.
The samples were made into a glass melting piece at 1 050 ℃ with [m（Li2B4O7）∶m（LiBO2）∶m（LiF）=4.5∶1∶0.4] as flux at a dilution of 1∶30.The elements includingFe、Si、Al、Mg、Ca、Na、K、P in the melting piece were simultaneously determined by X-ray spectrometry.The calibration curve was carried out with the standard samples. Whose determination results obtained by X-ray fluorescence were calibrated with a theoretical a-coefficient.Results obtained by the method were in good accordance with those values determined by chemical methods.Relative standard deviation（n=10）for each component were in the range of 0.43%～5.86%.
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