Shear z0He is a linear high.strain belt,which grows in inner earth crust. In the past 20 years,the abundance 0f achievements has reached about the relationship of shear zone and gold mineralization.This paper introduces the reseaI℃h achievement that is about shear zone and gold deposit from 5 parts,there are the time,space,elements migrating enrichment,mineralized alteration type and metallogenic dynamics.Longing the geological occupation stress the role of the relationship of shear zone and gold deposit.
Located in Shaanxi.Taihua uplift at the north of Huashan ancient land in the southern margin of North China Platform,this region has been a major gold distribution area with a significant production history.Host strata are dominated by Archean Taihua Group.Auriferous qz vein type gold deposits have been playing a key role in terms of the quantity,reserves and production(of gold deposits),despite that some other new types such as structure Zone altered rock style and Composite gold deposits were discovered in this area during recent years. Therefore,auriferous qz vein gold deposits are still deemed as both the important objectives to our studies and good basis for the deep explo。ration.It is indicated that the spatial distribution of auriferous qz veins are closely attached to properties. OCCHITence and scale of fault structure of mineralization period,but not restricted by certain stratigraphic horizon of the Taihua Group.That is to say,the spatial distribution of auriferous qz veins are closely related to the structure. It is concluded that we should pay attention to the regularity in the amount, scale and mineralization of auriferous qz veins during
prospecting work,especially those big veins with steep occurrences turn ing to fiat or those with imposed mineralization by multistage tectonic activities.At the same time, qz veins mineralization enrichment at different elevation due to thedifferences in tectonic environment,physico—chemical conditions, and mineralization intensity at mineralization stages.These are all significant for either the surface or the deep prospecting for gold deposits at this region.
Maquan gold deposit is located in Lixian-·Baiyun--Shanyang deep fault rupture Lixian western branch-。Taop-ing fracture on the middle.Through studying Maquan gold deposit of No.1 and No.20 ore belt,the ore—controlling fracture characteristics,mineral characteristics and ZK40—1 borehole associated element characteristics.We believe ore body no profile in the plane and both belt pinch,a large number of belt still around ore body outcrops(Man found mining)not to surface and exposed deep works.There is still great potential for development,and should put greater
workload,the expansion of existing scale.
The distribution of volcanic rocks and sub.volcanic rocks in eastern Jilin are extensive,只0ld deposit is hos.ted in volcanic rocks and sub-volcanic rocks of the Middle Jurassic.early Cretaceous.Geological characteristics of the volcanic gold deposits in eastern Jilin are summerized.Studies on fluid inclusions,S,C,Pb,H and O isotope of the main gold deposits show the metallogenic materials arc considered to be from the ore.forming fluid and volcanic rocks and sub-volcanic rocks which are formed by volcanism in upper mantle.The ore.form ing fluid has characteristics of lower salinity,acid and rich H20,sol‘,C1一and K ,it belongs to K /Na .Ca“.sol .Hc0;,SO it is mixed fluid of magmatic water and atomspheric water.The physical—chemical environment of gold mineralization are at temperature of 156—284oC.pressure lower than 450×10 Pa。and depth less than 2km.The major mineralization epoch was 127.8~140Ma.On this basis.the metallogenic model of the gold deposits in the area iS established.
Laji mountain gold metallogenic belt is one of the most important gold metallogenic belts in Qinghai provoince.In recent years.ore searching work has been made at the east and larger progress was achieved,which shows better ore prospect in eastern I i mountain.On the basis of summarizing the ore indicators in recent years,we point out the ore—prospecting in the future.
Along with the volcanic massive eruption,magma intru sion,the frequent occurrence of tectonic movement,Manzhanggang regional provides mineral,thernal power,and ore—guided, ore—containing space for the formation of gold deposit since late Hercynian.The mineral orginal layer of Manzhanggang gold deposit is Upper Triassic acidic volcanic rock.Ore·controlling structure is mainly to the north—northwest faults. This paper analyse the geochemical a.nomaly,gold 0re body and its type of this area comprehensively,and raise the prospecting potential of gold deposit
DPIS is deposit orientation forecast software,which based on “information magnitude”a superior prospec· ting perspective area. Application in Songpan—Motianling area shows that the area can use geology,geophysical prospecting,geochemical exploration and remote sense data farthest.There are three steps of the project:preparing basic data,choosing sign of prospecting integrated information and outlining integrated information prospecting perspective area.The most important step is choosing sign.The main affected facters which decide validity of the final prospecting result is the knowledge of specialist.
This Paper discusses the geological background of Lead—zinc deposit at Zhongnangou,and summarizes the basic geological features of this deposit.The ore—bearing strata of the deposit is Upper Ordovician volcanic—sedimentary rocks.The ore body that occurred in tuff and limestone is stratiform。NNW deep fault provided a good geological condition for the formation of lead.zinc.This paper explores the gological conditions of mineralization at the same time,and it is helpful to the geological prospecting and exploration of this area.
Based on each unit’s geological features,rock characteristics of Manzhanggang super unit,this paper de‘scribed each unit’s lithologic features,emplacement of the body,and deputy mineral composition,useful metal ele‘ment,rock alteration features of each invasive unit.W e summed up the overall features of Manzhanggang super unit,and proposed the geological prospecting significance of this super unit.
This article describes the basic structure and measuring principle of GPS,and summarizes the applicationcharacteristics of GPS,analyzes error source which affect the measurement accuracy of GPS.At the same time,probing into some way for weakening the eror.
For the gold concentrate which bearing high copper and lead,We use alkalization and oxidation before eyanide leaching.Adding two typies of leaching agent selected from experiments,can obviously improve leaching enviroment and gold leaching result,reduce the consumption of cyanide 1.1 kg/t.
In the paper.we carried on a brief analysis for the(high)copper—gold concentrate.According to calculating theoretically the coordination number of copper cyanide complexes,we can obtain the variety trend of coordination in the different cyanide density.In copper cyanide solution,from the rule of the leaching rate of copper and the situation of it’S coordination,we can calculate the consumption of sodium cyanide in the process of copper—leaching.It is of great value to control the craft process with cyanidation—leaching from a copper—containing gold concentrate.
A gold—sliver ore has sliver mainly in Fujian,the sliver personal status is 1 28.87 g/t,the gold personal status is 0.72g/t.It was separated by floation,then cyanide leached,zinc dust precipitation.This article discussed serval problem about how to choice pramater on craft.
At present,there are a lot of ways of comprehensive utilization of the tailings.But they only use it to produce concrete block,sheet metal,cement and other materials,not fully utilizing tailings’composition,which contains enonnous of SiO2 and A12 O3,not extremely be used.We introduced the current ways of comprehensive utilization of gold tailings in this article,on the basis of preliminary exploration of gold:Takes the flux by K2 CO3,through high temperature calking decomposition gold tailings,the resultant was resolved in water,acidified by CO2,the residue was removed by filtration and the remaining solution was prepared potassium carbonate and white carbon black,the residue was acidified by H2SO4 firstly and prepared A1(OH)3.
W ith the practice of combining production of the fault and the fault method,we analyse the piston compres‘sor common fault comprehensively.Then take corresponding measures to corect operation,maintenance equipment,and improve the operation rate of the equipment.
Based on some examples of designed projects,this paper analyzes and makes comments on guiding ideologY,design scope,reclamation area,land—using target and main technological measures for land restoration design of mine enterprises,makes some suggestion for the reference of similar projects.