district Sokor is located in the Northern section of Central gold mineralization belt，Malaysia Peninsula. The ore deposits are occurred in a series of low-grade metamorphic volcanic-sedimentary rocks of Permian-Triassic. To study the genesis of gold deposit in Sokor， the characters of lithology，composition，trace elements and REE elements have been conducted.The results show that：the protoliths of these rocks are characterized by relatively high，aluminum，high LREE，and noticeable enrichment in both HFSE such as Nb，Ta，Ti and LILE including Rb，Th，which have the typical characteristic of island arc volcanic.Tectonic setting discrimination of metamorphic rocks indicates that they formed in island arc environment of active continental margin.
Through analyzing the geological material about Zhaishang-Mawu region combined with comprehensive research on strata，magmatic rocks and tectonic geological conditions，weights of evidence method was employed for metallogenic prediction in the study area.There were 12 metallogenic prospects，namely fourⅠlevel metallogenic prospects，three Ⅱ level metallogenic prospects and five Ⅲ level metallogenic prospects.Through the comprehensive evaluation，it can be concluded that the regional prospecting effect was good，and we have put forward the next step regarding prospecting direction：①Search for gold ore in northeast of Jiaochang rock mass；②Known deep invited vein type gold deposit and porphyry gold deposit exploration；③Known surface large，gold content was low temperature element combination of broken alteration zone of deep geological prospecting comprehensive evaluation；④Made exploration evaluation on the concealed and half concealed gold deposit below the tertiary and quaternary thick covering area.
Fujiawu copper mine is one of the largest porphyry deposits in form of strip mining in China，in addition to the main ore-forming elements，such as Cu，Mo，moreover，it contains useful components （partner） like Au，Ag，Re as well as Co.Through analysis of surface geochemical profile samples from the mine by testing trace elements，Au and Ag，it is found that the average values of Re and Ag in granite diorite porphyry are much better than that of the phyllite，however，the average level of Co，Au are higher in phyllite than that of the granite diorite porphyry.Re is primarily in the rock mass near the contact zone of porphyry，and Co is closely relative to outside of the contact zone，namely，weak alteration zone.Au is gathered in the outside of the contact zone，while，we find that Ag is with higher concentration both inside and outside the contact zone.Four groups of ore factor are corresponding to the mineralization of Cu-Ag-Zn-In，Er-Y-Ce-Pr-Ho-Eu-Gd-Tm-Dy-Y-La-Nd-Tb-Sm-Lu-Re-Mo-Cd-U，Co-Ni and |Au|-W，respectively.
Laizishan anticline southeast carlin-type gold（mineralization） deposit in southwest of Guizhou Province is located in connection between the southwestern margin of Yangzi paralatform and Youjiang orogenic belt，is similar to famous super-large Lannigou gold mine，they are found in the same anticline that is Laizishan anticline，and becomes important exploration area in southwest Guizhou region in recent years.We can point out the prospective areas，favorable positions and confirm target regions and calculate resources by the method of superposition comprehensive geological and geochemistry information in the study.Importantly，based on the geochemistry characteristics of prospecting zone to apply in the method，we get some information：Laizishan anticline of north-east and ramp type thrust fault that distributed in limbs of anticline and parallel anticline，those structures are good for carlin-type gold mineralization；additional，the soil geochemical characteristics contain the level of differentiation of anomalous elements and how to influence gold mineralization；in the aspect of tectonic geochemistry，elementary anomalies of Au，As，Sb，Hg and structural characteristics are combined to determine location of anomalies，relationships elements and gold mineralization；REE and carbon，oxygen isotopes of calcites can compose a discriminant that can show characteristics of fault belts that relate to ore-forming；above all，we can find out that Laizishan anticline southeast carlin-type gold （mineralization） deposit has great potential by the result of calculating resources.
According to the obtained results of mine deep exploration，the systematic collection of geological exploration as well as scientific research achievements in the study area，in the process of project implementation for the old mine deep prospecting nationwide，it was found that gold grade of the deep gold-silver vein exhibited a rising trend at the Qiliping F60-I gold and silver orebody.Through study on occurrence of state of the known orebody，regularities of distribution and ore-forming characteristics，deep tectonic mineralization，ore-controlling characteristics and metallogenic elements were analyzed.Additionally，based on MapGIS DTM spatial data analysis，the weight contour was applied for predicting space extending trend of the ore body，moreover，the state of the three-dimensional space of the ore bodies was likewise systematically studied.Reference for ore body engineering validation effect，the orebody spatial prediction scheme and validation project were adjusted and a good prediction effect was obtained.Meanwhile，we achieved the old mine deep ready exploration prospecting breakthrough，which had the very good guidance significance and demonstration effect deep prospecting engineering deployment for the deep prospecting in Xiaoqinling area，and it can effectively promote the deep geological prospecting work of the implementation and exploration engineering in the study area.
Setting pyrite typomorphic of Jiudian gold deposit in Shandong Province as the research object，through study on the form，properties，typomorphic characteristics，principal components and trace elements of pyrite，it is regarded that Jiudian gold deposit can be divided into five mineralization stages.Pyrite is not only the transfixion mineral in each mineralization stage，but also topomorphic ineral indicates the gold deposit.Pyrite crystal associated with gold mineralization is mainly octahedral，pentagonal dodecahedron and cube.Unit cell parameters of pyrite are 5.4192~5.4197 .Main chemical components of pyrite in mineralization stage show the characteristics of loss S and rich Fe. Au，Ag，As，Co，Bi，Cu，Pb，Zn and other trace elements have an evident enrichment in the second，the third and the fourth mineralization phases，B，Ni and Sb have no enrichment basically，and Ti shows a loss in the whole process.Through content of Co in pyrite，it is concluded that Jiudian gold deposit belongs to low temperature epithermal deposit.As showed by rare elements，it is indicated light rare earth elements are enriched，particularly La and Ce elements，while high rare earth elements are loss.The enrichment of light rare earth elements is the symbol of rich ores.
To solve the open pit to underground mining best lotion-synchronized mode selection mining technical problems，the influence of open-synchronous dynamic underground mining model，static，quantitative， non-quantitative indicator were considered.Then we propose a theory based on Variable Weight Theory （VWT） and technique for order pleference by similarity to ideal soltion （TOPSIS） of the complehensive evaluation index sysem for four kinds of candidate open-underground mining model synchronization comprehensive evaluation preferable.Judging optimization process，AHP could lead to“state imbalances” phenomenon.According to the theory of variable weights，to ensure that the balance of the various factors，we appropriately adjust their weights based on different theories and variable weights of each factor on the configuration.And then to determine the degree of excellence of each mining model，we use the theory to calculate the overall TOPSIS superior degree of each program.The results of this paper apply to Shirengou iron ore open-underground mining synchronous mode selection，the calculated overall superiority of the four kinds of options were 0.087，0.767，0.898，0.723，and the third mining model comes to the first place.The results obtained in actual are basically consistent with the project，and achieve good economic，environmental and social benefits in the production process.
The goaf formed by the exploitation of deep mineral resources was one of the major disaster sources which seriously threat to mine safety.The realization of digital management of goaf was an important issue for safety in production of mine.In order to improve the function and application value of 3D Modeling Visualized integratation system of goaf developed independently and realize the digital safety management of goaf， the functional structure of database system about goaf information and structure of database table were designed independently according with management status and requirement of goaf in mine and basing on analysis and arrangement of goaf information.The database system about goaf information was developed successfully which included mine information table，goaf information table，wall rock information table and some other main tables.Microsoft Visual Studio 2010 was chosen as the developing tool.Through the language Visual C++ and SQL platform database about goaf information was built successfully，an effective method for database about goaf information development techniques proposed，the functional structure of the three-dimensional modeling visual integrated system of goaf improved and it was applied successfully to the goaf management of a metal mine in Guangdong province.The practical application showed that the functional structure of integrated system was perfected by the development of database system and digital management of goaf was preliminarily realized.Useful reference was provided in systemic management and the works surrounding goaf，like relevant mining design.
Based on analyzing the character of 3D CAD MineStar software，applying AotoCAD software as well as aided design software for 3D mine，according to actual situation of the mine，entity model with 3D digital mock-up for geology and mine system at the Dayin’gezhuang gold mine was established，which had improved the information，production intelligent and automation level，production intelligence information and automation level.Moreover，it is meaningful and can provide significant direction for improving the speed and precision of the prospecting，mining quantity computation，aided design and safety management.
In order to obtain more accurate results of rock mass quality evaluation based on extenics engineering method，we established the matter-element model of rock quality evaluation based on the theory of matter-element model.With a review of the various factors of the matter-element of feature given practical domain，calculation formula of interval distance was established as well，and finally we applied extension set correlation functions to establish evaluation method of engineering rock mass based on the content and links function extension.Main engineering rock mass quality of the iron ore was valuated，and the results demonstrated that the rock quality level of N1 belonged toⅠ，while N2，N3 ，N4 as well as N5 were all Ⅱ，and N6 belonged to Ⅲ.Through comparing the results of extension theory and quality evaluation of rock mass obtained by other evaluation，we verified the feasibility and reliability of engineering rock mass quality evaluation method based on feature range.
The GNSS technology predominately includes four global positioning systems，namely，the GPS， GLONASS，GALILEO as well as BDS.The results presented that the GNSS multi-satellite system had significant advantages in positioning accuracy，system reliability and safety compared with the single GPS positioning system.On the basis of introducing more integrated navigation algorithm and positioning principle，combined flexibility of the Hi-Target V30 receiver in the aspect of control network design and the control point layout，we described the application of the GNSS technology in control survey at a mine area in Yangshan county，Guangdong Province.Operation of each section of the data processing with the HGO software demonstrated that precision of the data calculated by the HGO was enhanced greatly，meanwhile，error in point plane improved from 16.3 mm to 4.78 mm as well.In addition，the GNSS technology used in mine area control survey can overcome the negative influence of the complex terrain and vegetation coverage，and improve the working efficiency，and finally aim to guide the production with the theory of technology.
In the process of GPS control survey，there were various factors of the comprehensive interference，which caused that the GPS satellite receiver received the abated signal，and together with all kinds of noise.In this study，we designed a new quantum genetic algorithm based on mathematical morphology characteristics of element parameters initialization quantum genetic populations.Through quantum crossover，mutation，and based on the expansion coefficient of quantum rotation gate realize the population evolution process，we dealed with the noise of the satellite signal，and lowed residual error of the baseline，therefore，calculating precision of baseline was improved.On the basic of data collected by GPS at the Yangshan gold mine in Gansu Province，and using three methods to deal with the noise of satellite signal，after comparation we found that the noise signal of signal-to-noise ratio was improved from -0.92 dB to 5.11 dB with the new genetic algorithm.
Compared with other pretreatment methods of arsenic-bearing refractory gold ore，biooxidation has some advantages such as low capital cost and easily operating，which are appropriate for small and medium sized gold mines.But the relatively low aeration efficiency in the biooxidation lead to require lots of aeration and high power cost.In this study，a novel structure of the stirred reactor is proposed，which improves the aeration efficiency and the way of agitation，can reduce amount of aeration and cost of power consumption by increasing the efficiency of biooxidation.Acidithiobacillus ferrooxidans（At.f） is applied to leach the arsenic-bearing refractory floatation gold concentrate in a 100 L stirred tank reactor with and without draft tube.The pH and redox potential（Eh），are monitored and sampled regularly for measurement of total amount of iron and total amount of arsenic.The treated concentrate is analyzed with XRD and SEM.The results show that in the biooxidation process of two weeks，at the second day of biooxidation Eh increases rapidly and the maximum value is 497 mV，the arsenic removal rate reaches 34.86%，and gold extraction rate reaches 58%.
According to acid leaching with thickener overflow water at low pH and high concentration of heavy metal ions in certain gold smelter，we compared the results and feasibility of different methods including film processing method，ion exchange resin method as well as sulfide precipitation for removing Cu，Cd，Ni and other metal ions in waste water during gold smelting and recycling gold in water samples in this study. The results showed that metal and nonmetal ions content in muddy water was nearly double when applying the membrane technology to deal with the overflow of water，but filtration procedure was time-consuming on the whole；When resin adsorption method was employed to separate As，Au from water samples，we cannot obtain expected results，however，other elements with low content can be absorbed by resin effectively.The results of sulfide precipitation method were better than other mentioned methods，nevertheless，the method combined with oxygen，activated carbon adsorption section can sufficiently remove arsenic.Overall，it can be concluded that combination of the three methods is feasible economically for wastewater discharge and wastewater reuse in some gold smelters.
Jamesonite is a kind of metal composite sulfide ore，and it is difficult to separate lead-antimony applying currently processing technology，instead，smelting technology is generally used for lead antimony separation.Since the 1960s，metallurgical researchers have developed a variety of crafts to separation of lead antimony，such as smelting，chlorization hydrolysis and sodium sulfide leaching method，etc.However，with the rapid development of smelting technology，the existing technologies can’t meet today’s development and the limitations gradually.In this review，we summarized the main characters of the jamesonite，then process characteristics and the existing problems of the mentioned methods were briefly addressed.Moreover，we analyzed the limitation of sulfur lead antimony smelting process，meanwhile，the oxygen-enriched strengthening smelting method of smelting single lead or single lead as well as brittle mixed lead antimony smelting sulfur latest technology were introduced.In addition，we mentioned that oxygen-enriched strengthening smelting process should be strengthened in the future.
The two stage aqua regia-two stage reduction process is studied for high-purity gold refining.The process includes pulverization of coarse gold，aqua regia，removing nitrate，reduction，smelting waste gas treatment and wastewater treatment.The practice shows that the quality of high-purity gold is stable and the purity of product is over 99.999%.Compared to electrolysis and solvent extraction，the two stage aqua regia-two stage reduction process has advantages of simple flow，short production cycle and convenient operation.The success of the two stage aqua regia-two stage reduction process has an important significance in improving the competition of enterprise and added value of product.Therefore，the two stage aqua regia-two stage reduction process is worth of promotion in gold manufacture enterprises.
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