J&L Au Polymetallic deposit situates at an important regional SEDEX and VMS type Pb-Zn polymetallic metallogenic belt.After several stage of exploration，it’s gold resources already reached a large sized level，Pb-Zn and Ag all reached a medium sized level.But according to the genetic type has been controversial for a long time，and the research about the ore control factors is not enough，exploration direction is undefined .In a big exploration campaign of J&L in 2010，the different mineralization episodes was indentified and the mineralization genetic type was defined through detailed observation on drilling cores and underground，combining with a numerous of sample results from muti-elements analysis and 3D modeling for J&L.Based on a clear understanding about J&L，a new exploration campaign was arranged，subsequently lead to a very good exploration result.Two mineralization zones（Yellow jacket and Main zone） had been identified and controlled，the space between two zones from north to south is only 30 m，but the two zones show a distinct different mineralization type.This research consider：Yellow jacket zone is a stratabound IRISH Pb-Zn deposit hosted by carbonate；Main zone is a orogenic Au-Ag-Pb-Zn polymetallic deposit hosted by shear zone，which overprinted on a stratabound Pb-Zn mineralization in orogenic period.
In recent years,the mineralization-concentrated regions with gold-silver polymetallic deposits in Mapeng area have been famous as superior ore-forming geological conditions in the whole middle segments of Taihang mountains soon.Twenty-five gold-silver polymetallic deposits（occurrences） have been successively discovered,most of them located around in Mapeng granitic intrusion.But currently eight mineral occurrences with exploiting value have been discovered,in which especially the Shihu gold deposit has become the only large ore deposit,so the regional metallogenic regularities and the metallogenic relevance in these deposits should be summarized in order to guide further ore-prospecting work.Through studying regional geological conditions and contrastively analyzing typical ore deposits with Shihu gold deposit on the southeast of Mapeng granitic intrusion and Beiyingxigou silver deposit on the southwest of Mapeng granitic intrusion,this paper finds the deposits （occurrences） surrounding the rock have the great analogues in regional structure,strata,magmatic activity,wall-rock alteration,lode features,etc.and they belong to yanshanian unified metallogenic series events.Based on this,we summarize the regional metallogenic regularities and the regional metallogenic model,and point out the regional prospecting direction.
Jiaojia gold mine of Jiaodong area is a famous gold concentrated zone.The type of Jiaojia gold mine is mainly altered rock，and the quartz vein-type gold deposits also appear in partial ore district.The formation and distribution of some large and medium gold deposits present the feature of certain part and equidistance.Orebodies usually lie in cross and composite parts of fracture structure or sudden turning parts of structure.Through the study of mineralization structure of Jiaojia gold ore mine，the relationship of ore-controlling function，alteration and mineralization has been concluded.This theory，used as guideline for new geology prospecting，provides basis for discovering new gold resources.Studies have shown that fracture structure is the dominant control factor of gold deposit.
Xincheng gold deposits mainly develop the orebodies of the altered rock type（No.Ⅰ orebody） and quartz vein type（No.Ⅴ orebody）.As the genesis research in gold deposit of Jiaodong peninsula advance further,investigation for the metallogenic process and resource potential in the Xincheng gold deposit is more and more significant.The results showed that the ore-forming fluid of altered rock type orebodies is mainly middle-low temperature with homogenization temperature from 376 ℃to 124 ℃,low salinity（NaCl eqv.） from 5.0% to 10.5%, low density with density from 0.787 g/cm3to 0.985 g/cm3,metallogenic depeth from 0.03 km to 12.86 km. The ore-forming fluids of quartz vein type orebodies mainly in middle temperature with homogenization temperature from 332 ℃ to 191 ℃,low salinity（NaCl eqv.） from 4.0% to 8.5%,low density from 0.814 g/cm3 to 1.013 g/cm3, metallogenic depth from 1.33 km to 11.42 km.The identical magma and fluid metallogenic system generated the mineralizing types of No.Ⅰ and No.Ⅴ orebodies under different physicochemical conditions,displaying that with the process of mineralization, ore-forming took place from the fault, through the contact between steep-angle fault in deep and low-angle fault in shallow,to the distal wallrock outward,and the effect of wallrock intensified gradually and the evolution of mineralizing type formed quautz vein type at first,then quartz vein type-quartz mixed,finally,altered rock type dominantly.Metallogenic model of the Xincheng gold deposit is built up,showing that the deposit consists different kinds of mineralizing types and metallogenic models.
Lazhuokan copper deposit is located in the transitional zone between E2j and E2jp in middle of gandise island-ore belt,and mainly ore-bearing rocks are monzogranite,quartz diorite and megaporphyritic.Oxidation ore grade 0.55%~0.72%,deep original mineral grade 0.62%~0.66%,ore structure to granular structure is granular texture,uncharged structure,metasomatic structure.Wall-rock alteration and mineralization mainly are malachite,chalcopyrite,pyrite,chloride,chloritization.The copper deposit formation is realated to late yanshanian granites acidic magmatic rocks and the NE structure with mine structure,control the distribution of orebodies, formation.Research shows that Cu-1 orebody have a deepening trend and soil geochemical anomalies have check value in the southern.
The Kuhai area is located in the eastern part of south belt,East Kunlun orogenic,and the north side of South Kunlun fracture,where is the binding site for groups of tectonic units.Previous work in the area ring out integrated multi impose Au,As,Sb elements based stream sediment anomalies,anomalous components is complex,the fit is good,high strength.Through geological,geochemical and surface engineering inspection,control,a number of large-scale gold broken alteration zones,the body of gold and good prospecting clues are found in the stream sediment anomalies.In this paper,based on the analysis of ore-forming background of geochemical anomalies characteristics, types of gold mineralization,we think the metallogenic geological conditions of this district is good for finding orogenic-the prospect of altered rock type gold deposits.
The east section of Eastern Kunlun is as the hot spot of prospecting recent years, more deposits （points） found one by one.Using geological，geophysics and geochemical comprehensive ways，the study results show that the old metamorphic rock（precambrian） is the important ore-bearing horizon,its characteristics is similar with the precambrian around the Qaidam Basin,which is as nappe overlying on the later layer,turning into relic rock sheet, underwent long distance and low angle push.It acted geosyncline foundation recepting sedimentary and basic to neutral magma injecting,showing a rich material source,also undergone multi-structure-heat events,means there is good prospects.We have found two gold deposits,and a few of mineralization points,most of which distribute in precambiran,showing there was a good metallogenic prospecting in precambrian layer.
It is very difficult to find concealed deposits in Qinghai-Tibet plateau permafrost zone,prospecting breakthrough is not achieved using conventional geophysical and geochemical techniques.By carring out concealed ore prospecting forecasting in Zhajiatongna gold ore field in extremely friged zones using soil ionic conductivity and geo-electro-chemical extraction method,we delineate three prospecting target in unknown area.The abnormal scale of No.Ⅰ prospecting target located in the middle of survey area is large and has good ore-forming conditions, should be the key exploration area in future work.Choosing No.4 exploration line as the known profile to theck method effectiveness and feasibility,the results show that there are obvious soil ionic conductivity anomaly and geo-electro-chemical extraction Au element anomalies,this further confirm that the prospecting application effective of these two kinds of methods in Qinghai-Tibet plateau permafrost zone are obvious,so it should be widely applied.
In order to find out the location and extension of deep Cu-Fe-Au ore bodies in Nangetan ore district， and the distribution of Cu-Fe-Au ore veins in the western coverage area，search for polymetallic deposits，expand the scale of mining area，we delimit polarization anomalies by IP intermediate gradient survey result and check anomalies by composite profiling method.Polarization bodies and fracture zones are inferred.We employ composite electrode distance survey to locate the polarization bodies and the enriched zones.Based on the result，Fe-Cu-Au ore bodies are discovered in ZK1501 drilling hole.The deep shape，scale and mineralization of No. 3，4，6 veins are ascertained.The result offers some basis for further prospecting.
Tourmaline mineral has various chemical composition and multi-isomorphism on the same position.Their formation temperature and pressure range is very extensive，can be stable in the temperature of the earth’s crust pressure range，and can keep balance with various geological fluid.The main and trace elements spread rate of tourmaline structure is extremely low.And tourmaline mineral hardness is bigger，after forming can withstand erosion，weathering，diagenesis，metamorphism process and save the composition and structure when they formed.Through analysis the trace elements，stable isotopes（including B，Li，Nd，etc），radioactive isotopes （K-Ar，Ar-Ar，etc） which composite tourmaline can tracer the diagenesis and mineralization environment，including the source of the fluid，redox condition，temperature and pressure，formation age and mineral instruction significance in the exploration.
In order to respond positively to the country’s“development and promotion of industrial water reuse technologies” spirit and the call of“energy-saving emission reduction, environmental protection”,one gold mine for gold in the production process has a wastewater characteristics，determine the sodium pyrosulfite decomposition of cyanide-gold production wastewater treatment by electrocoagulation process，and through the trial and test,determine when the decomposition of cyanide process for pH control in 8.5,sodium metabisulfite is 10 kg/t,decomposition of cyanide response time of 6 hours.When the [Cu2+] at 10~30 mg/L,optimum conditions for flocculation process flow 130~150 m3/h,current 6 500 A,voltage 24~25 V,after this process the water can be reused by the enterprise.As further deep oxidation which can meet The Standard for Integrated River Basin Water Pollution Discharge on the Peninsula of Shandong Province（DB37/676-2007） emission level standards.The gold mine using sodium pyrosulfite decomposition of cyanide-new technology for production of electro-flocculation treatment of wastewater treatment and reuse, implementation of wastewater reuse.
On the situation of the country’s rapid economic development,in order to adapt to new developments,many old mines need to keep expanding production capacity,while mine hoisting system is the main factors restricting the expansion of production capacity,coupled with long duration and slow effective of construction the new shaft hoisting system,making it difficult to continue,so we carry out technological innovation on the basis of old lift system,it is the shortcut of rapid development.Taking the lift system transformation of west mining area in Jiaojia gold mine of Shandong Gold Group as an example,we describe a method of rapid increase lift capacity,we transform the single-layer cage system into a double cage,including the selection of the cage and the wire rope and transformation of the strength of lift machine.Finally,we achieve good effect of saving energy,the enhance capacity increases nearly、bled.
The gold content in the ore is usually determinated by atomic absorption or volumetric method using the aqua regia dissolution method to generate gold chloride acid firstly,whose stability easily affected by temperature,acidity,concentration external conditions and container adsorption.In this paper，the method using gold chloride sodium instead of gold chloride acid for the determination of gold in ore content was developed.The standard solution prepared by the method was placed for three or four months still not turn to lower reduction.In this method,gold was enriched by activated carbon adsorption column，dissolved in aqua regia，and then gold chloride of sodium was prepared by adding the saturated sodium chloride solution.The determination of gold content was processed using the atomic absorption method in the Hitachi Z-2000 atomic absorption spectrophotometer.The experiments showed that the method is reliable，and owns small error and good stability.Depended on the absolute determination sensitivity of 0.025 μg/g and measuring range of 0.04～1 000 μg/g，this method was suitable for the gold determination in large quantities of geological ore samples.
Abstract: Navigation points are batch inputted to handheld GPS by manual input navigation point one by one in the traditional geochemical sweep work.This method is not only inefficient but also easy to make mistakes.Through repeated practice，we develop one method which using MapGIS，Notepad，"GPS" help，MapSource and other software to generate exchange format GPX file of MapSource data，and then achieve the goal of fast and efficient batch input to the handheld GPS waypoint data.Destinations verification had proved the feasibility of the method.The method does not require programming，it is practical，can not only reduce human error，but also improve the work efficiency，bring great convenience to the geological field work.
Noise and abnormal superposition effect usually contained in IP anomaly data，how to effectively isolate the exception information，improve the IP anomaly indoor processing efficiency and the level of explanation，is an important link of IP anomaly interpretation.In data processing method，the wavelet transform is a new mathematical theory and methods developed in the mid-1980s，it has a good nature of local analysis in the space domain and frequency domain at the same time，the signal can be broken down into a variety of different frequency or scale ingredients，using the above characteristics of wavelet transform，we can get a variety of abnormal in the sense of scales based on the IP anomaly classification.The application of wavelet analysis method in a mining area of Henan Province in ladder IP anomaly data processing，to distinguish noise and surface shallow geological interference anomaly，deep source or larger scale geological background abnormalities，highlighting the ore anomaly information，finally obtain better data processing effect.
Orebody thickness is a key factor of ore resources/reserves.However，its applied calculation formulaes at present are intricate and go wrong easily.In order to acquire the ore body thickness quickly and accurately.Calculation formula are summarized to one in light of 3 conditons arising between ore bodies and line situations.By the formula which is also applied to calculate rock stratum thinkness in tested geological sections,orebody true thickness will be calculated if only true attitudes of ore bodies and lines are known without considering other factors.
Currently,Shabaosi gold deposit has entered the stage of mine construction and exploitation,so the quality of water resources will inevitably have some impact on mine construction.Based on analysis and testing of water resources in water quality analysis,bacteria,radioactive aspects,water quality was evaluated from three aspects: drinking water, boiler water and construction water.In the region,surface water quality is better and meets drinking water standards,but it is poor water quality of ground water that arsenic,iron,manganese,oxygen consumption etc.generally exceeded the standard,water is hard and soft fouling or soft water,not sparkling water,not erosive,water of Xiaodong river upstream is non-corrosive water,others are semi-corrosive water.
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