The metallogenic fluid field of the Puziwan gold deposit is studied by\measuring the γ-ray spectrometric density of subaerial rocks.It is discovered that the gold miner alization alteration appears in dot-like pattern which is located at the inter section of NE- and NW-trending structures.The so-called NEE-striking metallogenic alteration zone does not found.It is deduced that the NEE-striking breccia zone should be the result of postmineralization.The gold deposit should be classified as a reformed cryptoex plosive breccia type.The future prospecting strategy should be made accordingly.
The dikes in Jiapigou granulaite-grecnstone belt,characted by different kinds,scales,as well as times,corresponded to and alternated with gold-bearing fluid on space and time reprcsen tatively.Them ineralizations were influenced strongly by the properties of dikes and wall rocks.Analysis shows the reason why the ore bodies are closely related to both light-coloured dikes in dark-coloured rock series and dark-coloured dikes in light-coloured rock series.
The geological features of gold deposit at langquan are described detailedly.With middel scale, this deposit is microfine-grained disseminated gold deposit.From geological features of gold deposit, material composition of ores,hosting status of gold,alteration of wall rocks,metallogenetic epoch as well as gold-bearing proerty of strata,inclusions of minerals,stable isotopes,etc.,the author has discussed the genesis of this gold deposit and considered a hat this deposit underwent sedimentary,hydro thermal and supergene enrichment stages and was controlled by strata and fault structures.The strata of Beipeng Formation of Middle Triassic have high abundance of gold and are the major source beds;The langquan fault zone is the main ore control structure and the ore bodies occur in the stronger active structures;The hydro thermal epoch may be divided in to four stages and the gold mineralization is principally associated with the second and the third stages,namely mesothermal stage and epithermal stage.
During the mining operating in two deposit of Hetai Gold Ore Field,ast rike-slip structure are characteristic indication on gold prospecting at this district,it generally occur on center and top and down of orebodies,and direct influence presence and scale of bonanzas.ln other words,in the ductile shear zone-gold deposit,orebodies controlled by the second-class britt lest ructure of ductile shear zone,it has a angle with main structure-see,and it occer side arrange of littler scale in main structure zone;the strike-slip structure formed by structure of many times activity,that it occur due to differential uplifting along Scmask.Pseudotachy lite on part of structure are that formed by strength fast released when low temperature and high pressure at later period and shallow level,and it not relation of form orebodies.
Cyanide leaching of a copper-bearing gold sulfide concentrate using oxygen was investigated.Some factors affected on cyanidation of gold in the concentrate,such as the dissolved copper,the concentration of oxygen in pulp and the initial cyanide concentration,were discussed.A technical scheme for processing the Cu bearing concentrate and optimized operating conditions were proposed.
A ccording to production practice in Huachanggou Gold Mine,discussed flow sheet technique and society economic effect to management separation tailings water contain cyanogen with method of carbon absorbion oxyenize,and came to builed conclusions that is proffering warning to similarity gold mine.
Placer gold separation hasnqt built a standard determine method until today in our country,with theory and practice lots of years in Ankang Gold Placer Mine,has summed the methods of mine samp les and calculation recovery simple possibility comfortable production regularities,it has overall effect of guide to placer gold monitoring.
甘公网安备 62010202000672号