Table of Content

25 October 2017, Volume 33 Issue 10

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Metallogenic Characteristics and Prospecting Direction of Qingshuitang PbZn Deposit in Hunan Province

ZHANG Xiao-Ping-　Zhang-　Tao-　Wu-Zhi-Hua

2017, 33(10):  1-7. 

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Qingshuitang PbZn deposit in Hunan Province is located at the northeast side of ChenzhouShaoyang basement fault,PbZn orebodies are occurred with vein shapes in the NE trending and near SN trending faults of Cambrian and Ordovician.The PbZn orebodies are controlled by faults and stratigraphic position,and the orebodies with the regularities of equidistance disposition,vertical zonality and lateral trending to the south,a secondary sulfide enrichment belt is occurred near the area of evaluation 450~150 m.Based on the geological working results newly obtained in the mining area,the geological characteristics of the mining area and deposits,orebody spatial distribution regularity,deposit genesis and orecontrolling factor of the mining area are discussed in detail,it is show that the metallogenic process of the deposit can be described as following:the orebearing hydrothermal is moved upward along the basement faults to Qiyang mountain type tectonic fracture located in the surface,and the mineralization strata of Cambrian and Ordovician is leached and permeated from south to north,the hot brine mixture hydrothermal rich in mineral fluid is formed,and it is precipitated and enriched in the favorable metallogenic fracture belt (such as NE trending and near SN trending extensional tensoshear property fracture belts),so the mediumlow hydrothermal filling type PbZn sulfide deposit is formed.Based on the above analysis results,the prospecting model of the mining area related to geological characteristics,mineralization characteristics and comprehensive information characteristics is established,and the further study results indicated that the prospecting potential of PbZn deposit in the mining area is huge,besides that,the coexisting minerals or accompanying minerals such as Au, Ag, Cu, Cd and Sb with the characteristics of large〖HJ〗〖LM〗 scale and high grade can be found in the mining area by further conducting comprehensive prospecting work.

Geochemical Characteristics and Prospecting Direction of Jiasi PbZnCu Mining Area in Wuqia County,Xinjiang

JIA 　Te-　Yang-Zhao-Peng-　Ding-Xiao-Lei

2017, 33(10):  8-15. 

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The regional geological background and geochemcial background of Jiasi PbZnCu mining area are discussed,besides that,the metallogenic geological conditions and geochemical characteristics of the mining area are analyzed in detail.Based on the analysis of the 1〖DK(〗∶〖DK)〗200 000 and 1〖DK(〗∶〖DK)〗50 000 stream sediment measurement data of the mining area,the comprehensive anomalies mainly for the elements of Cu,Pb,Zn and Ag of the mining area are delineated by using 1〖DK(〗∶〖DK)〗25 000 geochemical measurement method of secondary halo in gully system.The geochemical characteristics and correlation characteristics of the secondary halo in gully system are analyzed,it is show that in terms of the elements of Pb,Zn,Cu and Ag,the contents of them are higher than others,the variable coefficients of them are also larger than others,and the local enrichment characteristics is significant,they are can be regarded as the main metallogenic elements and mineralized associated elements,besides that,H3#and H4#comprehensive anomalies are both with the characteristics of relative large size and high peak value,and the concentration centers and concentration zoing characteristics of them are both obvious,they are located at the Yangye copper metallogenic belt,which metallogenic conditions are similar with the one of garden type sandstone type copper deposit,the comprehensive analysis results show that H3#and H4#comprehensive anomalies can be taken as the favorable prospecting anomaly areas of garden type sandstone type copper deposit.The surface engineering revealed show that Ⅰ# copper orebody is found in H4# comprehensive anomaly,Ⅱ# copper 〖CM42-107〗 mineralization body is found in the west of H3# comprehensive anomaly,which further indicated that the 〖LM〗prospecting potential of the mining area is good.Based on the geochemical characteristics of secondary halo in gully system and the geological environment of the mining area,the prospecting directions of the mining area are also discussed,so as to provide some reliable reference for further conducting the prospecting and exploration works of PbZnCu deposit in the mining area.

Occurrence Characteristics of the Associated Co of Contact Metasomatic Magnetite Deposit 〖JZ〗in HandanXingtai Region

LIANG Hai-Ting

2017, 33(10):  16-19. 

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The contact metasomatic magnetite deposit in HandanXingtai Region is mainly hosted in the contact zone of the carbonate rocks in the Yanshannian neutral intrusive rocks and Ordovician groups,and generally associated with Co.Through the study of the ore quality characteristics,it is show that Co is mainly enriched in pyrite with isomorphism type,especially for the generation pyrite with the highest Co content,Co content is positively correlated with the S content in ores.The Co distribution regularity is closely related to the deposit genesis in the same deposit,generally speaking,the Co content of the upper of deposit is higher than that of the lower of the deposit.According to the analysis of deposit genesis of Co and Ni contents of ores,it is inferred that the Co source of the ores is magmatic hydrothermal.With the development and improvement of mining techniques and mineral processing techniques,it is of great significance to strength the comprehensive utilization study of associated Co of the contact metasomatic magnetite deposit in HandanXingtai Region,so as to provide some reliable reference for the comprehensive recovery of mineral resources.

Geological Characteristics and Prospecting Indicator of Dabaoshan Porphyry 〖JZ〗Molybdenum Deposit in Northern Guangdong Province

PAN Hui-Bin-　Cao-Yan-Chao

2017, 33(10):  20-25. 

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Dabaoshan porphyry molybdenum deposit is one of the typical polymetallic deposits in Northern Guangdong Province.According to the geological prospecting and exploration results of the mining area,the geological characteristics of the mining area and the deposit are analyzed,and the prospecting indicators of the mining area are also summarized systematically.The study results show that:①Jurassic stratum is pushed and overlapped by porphyritic mass from NNE to SW in the mining area,the main body of the nappe rock mass is molybdenum orebody,the mineralization of the mining area is mainly for Mo,the local section of the shallow area of the mining area is rich for W,the depth of the mining area is rich for Mo;②the molybdenum orebodies are occurred in the contact zones of granodiorite porphyry and Cambrian clastic rock and dacite porphyry,they are distributed with the shapes of quasilamellar and lenticular,the ore type is mainly for molybdenite ore,and a small amount of pyritemolybdenite ore,molybdenite and pyrite are the main metal metallic minerals, the molybdenum mineralization is occurred with irregular veins and net veins;③Yanshanian mediumacid shallow or ultrashallow intrusions such as granodiorite porphyry and dacite porphyry and the silicification,sericitequartz alteration can be taken as the important prospecting indicators of the porphyry type molybdenum deposit in the mining area.Based on the above 〖CM42-104〗 study results,the further discussion results show that the main orebody (Ⅲ# molybdenum orebody) is 〖LM〗occurred in the bottom of porphyritic mass and the upper of the thrust fault structural surface,the main orebody is closely related to the potassium,sericite and silicification,the length of the orebody controlled in the mining area from the strike direction strike is more than 600 m,the length of the orebody controlled in the mining area from the tendency direction is more than 650 m,the east of 58# exploration line and the depth area are not controlled by exploration engineering,therefore,some prospecting and exploration works is necessary to be conducted along the east of the strike direction and tendency direction of the orebody,and the prospecting potential can be enlarged.

Geological Characteristics and Prospecting Indicator of the Deposit in 〖JZ〗Xinlong Sb Mining Area in Hunan Province

LIANG Yong-Ke-　Zhao-　Jie-　Wang-De-Gong-　Yang-　Sheng

2017, 33(10):  26-30. 

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The deposits in Xinlong Sb mining area are mainly controlled by structures,they are characterized as fractures and folds,fractures in the mining area are consisted by F1 oretransmitting fracture and the NNW—NW,NNE,NE,NWW trending secondary orecontaining fracture,the better antimony deposit is occurred in the normal wings of anticline and anticlinal core.In recent years,the resources reserves of the mining area is only almost 2 000 t,it is belongs to the resources crisis mine.Based on analyzing the mineral rock characteristics and the enrichment characteristics of Sb in strata in the mining area,it is show that Sb in the strata with high Sb background value is activated and extracted by magmatic hydrothermal and migrated to favorable structural space to form the antimony deposit.The analysis results of metallogenic conditions and orecontrolling factors in the mining area show that stratigraphic lithology,tectonics,alteration,geophysical and geochemical anomalies are the favorable prospecting indicators of the mining area,besides that,the prospecting potential of the edge and depth of the mining area is huge,it is necessary to conduct further prospecting and exploration work.

Geological Characteristics and Prospecting Indicator of the Maoniugou 〖JZ〗CuAu Deposit in Gonghe County,Qinghai Province

MO Yan-Qiang-　Ma-De-Qing-　Ma-Jin-Hua-　Wang-Jia-Yin-　Tan-　Yan-　Yun-Qi-Cheng

2017, 33(10):  31-35. 

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Maoniugou CuAu deposit is located in Elashan metallogenic belt,which is belongs to skarn type CuAu deposit.The founded three CuAu orebodies are mainly situated in or out of the contact zone of the skarn and occurred in middle stratum of Middle Triassic Gulangdi Formation.The orehosted rock is is skarn and marble.The wall rock alteration includes silication,skarnization,chalcopyrite,pyritization,magnetic pyritization,etc.The interpretation and analysis results of the soil geochemical survey and induced polarization intermediate gradient survey show that:AP3 anomaly (element combination are AuASSbHg,CuPbZnAg and WBiMo ) and DHJ2 low resistance and high polarization anomaly are the the important physicchemical prospecting indicators of the mining area,which are in good nested and zonal distributed along the skarn belt;the nested area of AP3 comprehensive anomaly and DHJ2 polarization anomaly, DHJ3 high polarization center,AP3 comprehensive abnormal high value area and the AP4 and AP5 comprehensive anomaly areas distributed at the both sides of skarn can be taken as the mineralization enrichment areas in the mining area.It is suggested that some related engineering verification work can be conducted in this mineralization enrichment areas,and the prospecting breakthrough will be realized.

Geological Characteristics and Prospecting Indicator of a NbTa Deposit in Western Guangdong Province

ZHANG 　Bao

2017, 33(10):  36-40. 

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Nb and Ta are the important rare elements,they are the relatively scarce metal mineral resources in our country.Taking a NbTa deposit in Western Guangdong Province as the study example,combing with the geological working results in the mining area,the regional geological background and geological characteristics of the deposit are discussed,besides that,the prospecting indicators of the deposit are summarized.The study results show that the favorable prospecting indicator of the deposit are structures,pegmatite,alteration and characteristics of rock veins and orebody veins,strata and surface outcrop.

Orebody Spatial Formation and Spatial Evolution Regularity of the Fluorite Deposit in 〖JZ〗Muzhijie Area in Song County,Henan Province

DONG Xian-Zheng-　Bai-De-Sheng-　Cai-Huan-Hua-　Zhang-Zhi-Shuang

2017, 33(10):  41-43. 

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The fluorite deposit in Muzhijie Area in Song County,Henan Province is located at the east of Machaoying deep fracture,the significant NE trending tectonic framework of the area is formed by Machaoying deep fracture.According to the field geological investigation results and the existing geological working results of the area,taking the NE trending structure of the area as an example,the characteristics and strength of orecontrolling tectonic activities,mineral composition,ore texture and structure,surrounding rock alteration characteristics of the fluorite deposit are discussed in detail,the spatial formation model of the fluorite deposit in Muzhijie Area is established,besides that,the spatial evolution regularity of the fluorite deposit in the area is also studied in depth.The above analysis results related to the orebody spatial formation and spatial evolution regularity of the fluorite deposit in Muzhijie Area in Song County,Henan Province can provide some reliable reference for further conducting prospecting and exploration work of fluorite deposit in the area.

Calculation Method of Thorium Interference Modification Coefficient of 〖JZ〗Gamma Ray Logging of Barenzhalage UNb Deposit in Inner Mongolia

ZHANG 　Kai-　Pan-Hong-Song-　Zhao-Bao-Guang-　Yang-　Yang

2017, 33(10):  44-47. 

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Taking Barenzhalage UNb deposit in Inner Mongolia as the study example,the reason the the the logging interpretation results is interfered by Th radioactive,the computation method of Th interference modification coefficient of gamma ray logging is discussed,besides that,the distribution characteristics of Th interference modification coefficient of gamma ray logging is studied based on the analysis of the alteration characteristics of orebodies or rock mass bodies and orebody depth.The calculation method of thorium interference modification coefficient of gamma ray logging proposed in this paper can provide some reliable reference for the radioactive logging data modification,division of orebody boundary and calculation of uranium resources reserves of Barenzhalage UNb deposit in Inner Mongolia.

Delineation of Spontaneous Combustion Boundary in the Burning Area of Inan Coal Field in 〖JZ〗Yili Basin By Using High-precision Magnetic Measurement Method

LIU 　Lei-　Miao-Chen-Ruo-　Qiu-Yu-Bo

2017, 33(10):  48-51. 

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Coal spontaneous combustion is not only affects the surrounding ecological environment of mining area,but also leads to a huge consumption of resources.Taking the burning area of Inan Coal Field in Yili Basin as the study example,based on the magnetic differentiation of the thermoremanent magnetization produced by the surrounding rock of the bottom and roof of underground coal seam after spontaneous combustion,the highprecision magnetic measurement method is adopted,the analysis and interpretation of highprecision magnetic anomalies of the measurement area are conducted,through magnetic profile inversion,actual geological survey and engineering drilling verification,the spontaneous combustion boundary of the burning area is delineated finally.The above study results of this paper about the delineation of spontaneous combustion boundary of the burning area of Ian Coal Field in Yili Basin can provide some reliable reference for the safety and orderly mining of the coal field.

Application of the Resuing Stoping with Concrete Pad in Steeplyinclined and Extremelythin Veins

TANG Xue-Yi-　Yan-　Peng-　Wang-Zhi-Guo-　Ren-Yu-Dong-　Jiang-Yong-Heng

2017, 33(10):  52-54. 

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Aiming at the mining technical problems of steeplyinclined and extremelythin veins of erdaogou gold mine, the resuing stoping with concrete pad is proposed. The comprehensive technical measures of adjusting mining and cutting structure ,changing bedding way, improving mechanization level and adopting the stoping method of two blasting mining operations and one resuing operation, the mining technical problems of steeplyinclined and extremelythin veins are solved effectively. The study results further show that the resuing stoping with concrete pad with the characteristics of high production capacity, low loss rate and dilution rate, low labor productivity and operation safety, it is suitable for the mining operation of steeplyinclined and extremelythin veins, especially suitable for the prevention and governance of ground pressure disaster, and it can also provide some reliable reference for the mines with the similar mining technical conditions with erdaogou gold mine.

Comprehensive Development Design and Application of the Expanded Mining of Yanghu Iron Mine

MENG Fan-Ming-　Zhao-Xing-Zhu-　Tong-　Sheng

2017, 33(10):  55-59. 

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In response to the depressed situation of the iron ore market prices, in order to make effective use of resources and seek the method to reduce costs and increase efficiency of mining enterprises, according to the resources characteristics of Yanghu Mine, the integration of expanding mining of the mine is conducted, through the study of the systematic optimization design, the comprehensive development method of the roadway+ramp+shaft is determined. Besides that, sublevel open stope mining method, short-hole shrinkage method and shrinkage comprehensive mining method are adopted, so as to meet the requirements of staged investment and rapid production, better economic and social benefits are achieved.

Narrow Size Beneficiation Experiment on Separating Titanium from a Iron Tailings in Panzhihua

WANG Jian-Ping

2017, 33(10):  92-98. 

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The recovery of titanium from the iron tailings of vanadium titanium magnetite in the Midi titanium dressing plant in Panzhihua is carried out.The particle size distribution of titanium raw material is wide,whose TiO2 grade is 954%,and titanium mainly exists in the form of ilmenite.Aiming at the problem of bad benefication index of coarse and fine particle fractionstwo stage high intensity magnetic separationflotation principle flowsheet,narrow size experiment on separating titanium from the titanium raw material was conducted.Results show that the raw material was classified into coarse fraction (+01 mm),fine fraction（0038~01 mm）and ultrafine fraction（-0038 mm）after 1 mm slag screening.Coarse titanium concentrate with yield of 505%,TiO2 grade of 4732%,recovery of 2505% and fine titanium concentrate with yield of 641%,TiO2 grade of 4729%,recovery of 3176% were obtained after coarse fraction and fine fraction raw material were separated by the principle flowsheet of magnetic separationflotation.Ultrafine titanium concentrate with yield of 053%,TiO2 grade of 4713%,recovery of 260% was obtained after beneficiating ultrafine fraction raw material by the open circuit test of suspension vibrationtwo roughing flotation of sulfurone roughing and three cleaning flotation of titanium.Each fraction titanium concentrate could be combined into qualified synthetic titanium concentrate with TiO2 grade of 4730%,recovery of 5941%.Compared to the original process flowsheet,concentrate TiO2 〖CM42-110〗 recovery rate is increased by about 24 percentage points.It shows that the recovery of titanium concentrate 〖HJ〗〖LM〗and ilmenite can be obviously increased and enhanced by narrow size beneficiation titanium,highly efficient recovery and utilization of titanium from the iron tailings is realized.

Experiment Study on Gravity Separation-Flotation of a Gold Ore

LIU Li-Ping-　Cao-　Jian-　Chen-　Zheng

2017, 33(10):  99-102. 

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A gold ore contains gold 198 g/t,and disseminated grain size is coarse,79% gold exsists in form of exposed and semi exposed gold.To rational exploitate and utilizate the gold ore resource,beneficiation experiment was conducted.Results show that,Knelson concentrator was suitable to recycle coarse gold in the ore and flotation with butyl xanthate and ammonium dibutyl dithiophosphate combined collector recover gold from gravitation separation tailings.At the grinding fineness of 69.8% passing 0074 mm,via one roughingtwo cleaning gravitation separationgravitation separation tailings one roughingthree cleaningtwo scavenging closedcircuit flowsheet,gravitation separation concentrate wtih gold grade of 5 25000 g/t,recovery of 5303% and bulk concentrate (gravitation separation middlings and flotation concentrate combined) wtih gold grade of 4126 g/t,recovery of 4252% were obtained.beneficiation index was good,and high efficiency recovery and utilization of the gold ore resource was realized.