Hulalin gold deposit is a middle-scale gold deposit located in north part of Eergunam ineralization belt, and the explosive breccia is the host rock. The deposit locates between North China plate and Siberia plate, is one of the growth area of porphyry type and explosive breccia type gold deposit. Mineralization age of gold deposit is 135Ma, mineralized breccia has the characteristics of typical crypto-explosion breccia. Mineralization has close relationship with the explosive breccia in space, time and genesis. The gold deposit has got the petrochemical characteristics that δ34S is from -0.2‰to 0.8‰, and Scharacteristics of deep-seatedmagma. The characteristics of S and Pb isotope, fluid inclusion and REE show that metallogenic material is from deep crust ormantle, and metallogenic fluid mainly is deep magmatic hydrotherm. Hulalin deposit is a typical crypto-explosive breccia type gold deposit.
Qingfenling gold deposit is located in the middle of the north Qilian gold-polymeltallic metallogenic belt. By analyzing the geological characteristics, we discussed ore-controlling conditions and prospecting direction of the deposit. Qingfenling gold deposit is a multi-periodmeso-epithermal deposit controlled by lower ordovician system volcanic series, NNW trending faults and alkalic monzonite rock. The dep th of Xilanggou and Renxionggou nearby the deposit have good prospecting potential.
Sixiakou gold-polymetallic mining area is major breakthrough in recent years in western region of Hube iprovince. Accord ing to the research of the following ore-controlling factors: litho facies and paleoyeog raphy the strata construction and rock types, tectonic, magmatic roc and denudation etc., summed up the ore-forming regularity. We think each ages strata inside the research area contains the different mineral: Au, Ag mainly occurrence in the Nanyangshan formation of top devonian series to the Yuanjiagou formation of descend carboniferous series; Sb mainly occurrence in the Lenshuihe formation of top devonian series; Pb, Zn mainly save to lie in the middle and descend devonian series. We also according to thick layer limestone, thin layer limestone and shale rock, sandstone with its interbedded relationship, divide the line a different mineral to take from the south toward north on the space, that is apart from generally for the 1 000m to be apart from westward by the east. Built up a regional metallogenic model and ore-controlling model of ore-bearing rock seriesmode, for further prospecting provide the theories instruction for that area.
Qingshan gold deposit occurred in the hydrothermal basinmarginwhich between the Shangdan suture zone andMianlue suture zone. The orebodys occur as vein, cystic, lenticular and stratoid bed in the carbonaceous slate and carbonatite, which located above the disconformity between JiulipingGroup and Jiehejie Group. The ores are divided into primary gold bearing pyrite-siderite type and gossan type. The main metallicmineral in the ore are siderite, pyrite, limonite and gold. The element association is Au-Ag-As-Sb-Ba. Hydrogen and oxygen isotope values of the ore-forming fluids have the phenomenon of / oxygen drift0. The metallogenic temperature ranges from 160～220 e, the ore-forming fluid is underground thermal brine which is bicarbonate-sodium chloride type. It is suggested that Qingshan golddeposit is hot spring type, which is formed by theMesozoic chronically repeated recycling in the Devonian System. The underground hot brine became progressively rich in gold and deposited in structure network.
Machangqing alkalite intrusive rock ismultiperiodic and multistage magmatic activity superimposed intrusive composite rock in west of Yunnan. The time limit of magmatic activity is 52 ～29 Ma, the earliest time began at 52Ma,mid time of it is 47～42Ma, and the latter time of it is 37～29Ma. Using ICP-MS testing the age of molybdenite Re-Os isotope of Baoxingchang porphyry copper, molybdenum deposit, get the pattern age is 34.9±0.8～36.0 ±0.5Ma, the average of it is 35.3±0.7Ma, which indicated thatmetallogenic time limit is about 35～36Ma. The result of above tallied with later granite-porphyry (29～37Ma) of Machangqing complex rock, showed thatmineralization mainly related with later magmatic invasive activity. The existing two ore occurrence shape and mineral compound form ofMachangqing copper, molybdenum polymetallic ore deposit belonged to the production of syn-mineralization; the different representation in different space of syn-mineralization, belonged to same mineralization system. Porphyry copper, molybdenum deposit of Jinshajiang-Ailaoshan mineralization beltwas the production of the syn-min-eralization, and mineralization time limit focused in 35～36Ma.
Jiaodong is the famous gold2concentrated area, gold mainly is controlled by three“S”-type fault belt, from west to east, respectively Sanshandao, Jiaojia and Zhaop ing faults. Zhaoping fault zone is one of the most important gold faults, it has already been proven gold reserves of 800 tons, and the ore-forming potential is great. Shanhou gold deposit is located in Laixi, south of Xiadian gold deposit, north of Jiudian gold deposit,middle-south of Zhaoping fault belt, it is composed of three mining sections, respectively Shanhou, Beibo and Mengshan. With increasing of study and control degree of Zhaoping metallogenic belt, indicating the mineralization potential of this area is great. However, research of metallogenic regularity in this area is limited in north of Xiadian gold deposit, the research extent of southern parts is very low. We analyse the geological conditions of gold mineralization by tectonic stress field, and evaluate the ore prospecting of this area.
Ag-Pb polymeta llic m ining area of highland 1017 is a kind ofmagmatic hydrothermal Ag-Pb polymetallic deposit found in the northeast part of Xilinguole league, Inner Mongolia. Large-scale geological survey and comprehensive research for it are in process. The major source beds are medium-coarse and medium-finegrained biotite adamellite of late Yanshan era, the folds and faults structure provide spaces for the polymetallicm ineralization. The important indicators of finding Ag-Pb polymetallic ore include structure fracture zone and tectonic breccia inrocks, the geological body with a variety of altered andm ineralized, the polarizab ility anomaly area delineated by the geophysical IP intermediate gradient, and the low resistivity geological body delinaeated by controllable source audio-frequency magneto telluric sounding. There are the ore-controlling factors for large ormedium Ag-Pb polymetallic ore in high land 1017.
It has been discovered that there are about 39 gold ore deposits at the east of Jilin province (Yanbian area), including several type of deposits, such as big-type deposits, middle-type deposits and small-type deposits. This area is the classic area of volcanic hydrothermal type gold deposit of mesozoic. According to the analysis of geological characteristics and ore-forming in this ore-field, we find that the ore deposit of this area is related with mesozoic volcanic rocks and sub-volcanic rocks. The ore containing wall-rock includes the late jurassic-early cretaceous volcanic rocks, which have been deep altered, and diorite porphyrite, quartz diorite porphyrite(or granitic porphyry), which are controlled by regional structures. Most of the ore-forming material in this gold deposit is from upper-mantle, the ore-forming solution is the mixed fluid of magmatic hydrothermal and atmospheric precipitation.
The Shabaosi gold ore is located in northeast of Ergun up lift and the edge of upper Heilongjiang fault basin. There are five industrial ore bodies, the average gold grade is 1.19×10-6, the main water-bearing stratum is middle jurassic 22 station group sandstone, lower cambrian Ergun marble. Through analysis of the water supply condition analysis, we pointed out that the ground water volume of the mining area is deficient, the water quality is poor, that will not be able to satisfy the needs of future mining area production life,we will have to carry on water supply by the surface water primarily, Xiaodonggou river could be the first choice for future miningwater, and we should pay attention to seal the hole of the drill hole quality while mining.
According to the disadvantages of conventional cyanide leaching method extracting gold and silver, such as long-time leaching and large consumption of reagent, we adopted a high pressure leaching instrument in leaching process, then take the pressure leaching experimental of extracting gold and silver for the concentrate ore after flotation, and make condition optimization research for pressure leaching using parts of orthogonal factorial method. In the end, combined with production practice,we comparatively analysis the conventional and pressure cyanidation.
Submitting exploration report ofmining area, in order to exact estimate the true reserves of ore body, bases on specification regulated, being request an othermethod to validate. We introduce SD method to validate the prepare reserves estimation accountingmethod of geological block of No.360 ore body in Yanshan gold deposit, contrast the result of two methods, then discuss two method influential factors and reasons of error. At the same time use the SD method precision to forecast result of reserves calculation and number of construction work and expound the SD method guidance construction significance of deposit exp loration.
Costminimization and economic benefitmaximization are always the goals which the mine enterprises pursue. To achieve the goals, they must be to optimize the extracting of gold ore resources and the management of mine, etc., especially at the phase of mill run. This paper takes Laowangzhai Gold Mine in Zhenyuan County for example, and esblishes a mathematical model, and at last makes a primary discussion on the application of the mathematical models in the mining field. In the condition of gold resources limited, seeking for the best use model, and achieving integrated benefitsmaximum.
In order to increase gold production, Sanshandao gold mine make experimental optimized combination for floatation operation and process conditions of auxiliary equipment. Change traditional concept, give full play to the capacity of existing equipment and facilities, through a little transformation and investment, the ability of mineral processing treatment increase 2 000 t/d from original design of 1 500 t/d. It produce considerable economic benefit and lay a foundation for completed production task of annual.
As a main equipment to complete the extraction, excavating, transportation and ancillary operations assorted the productive task. Trackless equipments are integration products including electricity, liquid, gas. It is particularly important to streng then themanagement with their high technical content and complex structure. This paper includes the proposed management model, represented advantages and disadvantages and how to avoid such disadvantage which considered the characteristics of trolley equipment and combined with the actual situation of Shandong gold mining Co., Ltd. It is a useful explore of the trolley equipment management. We hope that the development of the mining trackless equipments can be promoted, on this base, its' better to serve for the mining engineering work.
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