The Hulalin gold deposit is located in the north of Erguna ore-forming belt, belongs to the cryptoexplosion breccia type gold deposit related to the porphyry body. The mineralization distribution is featured by the model of onebody withmuhi-type. The orebodies are controlled by cryptoexplosion breccia and faults, Bi、As、Au、Sb、Ag、Pb are obviously enriched and have characteristics of big variation coeficient, uneven distribution. δ34S rangers from -0.2‰～0.8‰ and shows S features of plutonic magmas. The ore-forming materials derive from deep crust or mantle, and the ore-forming fluids derive from the deep magmatic hydrothermal solution. The ore-forming age was 135.5 Ma. The genetic type belongs to the meso-epithermal altered hydrothermal. It will is good prospecting exploration direction for the outside orebodies.
The Shabaosi gold deposit occures in Middle Jurassic land facies clastic rocks. The ore bodies are strictly controlled by SN and NNW trend faulto Fluid inclusions in quartz develop well，ale mailIly gas-liquid inclusions. The geochemical study of ore-forming fluid of Shabaosi gold depo sit proves: ① ore-forming fluid belongs to Ca2+ (K+、Na+ )-SO42- (F-、Cl- ) type which is characterized by the lower salinity (0.8～9.2wt％)、lower density (0.895g/cm3 ), alkali (pH 8.05∽8.26), high sulfide, low oxidize(LogfO2 -39.4∽-39.2)and reducing environment (Eh -0.71～-0.68) . ② The metallogenic temperature is 200°C～230°C, the pressure 172.4×105 Pa, and depth 0.575 km. ③ The ore-forming fluids are mainly from the deep magmas and a little from atmospheric water. so it is the mixture of magmatic water and atmospheric water. ④ Gold is mainly transferred in the form of gold-sulphur complex compands. The drop in pressure, pH value and promote in Eh of the ore-forming liquid sire important factors resulting in precipitation of gold.
Duhuangling gold deposit occurred in the quartz diorite of Late Yanshan Epoch. The ore-bodies are directly controlled by EW -trending fault structure zone. The main types of the wall-rock alteration include quartzitification, sericitization, chloritization, pyritization, limonitization, kaolinitization, carbonatization. Evolution of the alteration may been divided into three atages, namely, early-mineralizing alteration, middle-mineralizing alteration and late-mineralizing alteration. The gold mineralization is closely mated to the alteration, especially to the quartaitification, pyritization and sericitization-quartzitification. This is a typical fractured alteration type gold deposits. This is a meso-epithermal alteration type gold deposit which related with subvolcanic rock of Late Yanshan Epoch. Based on the prospecting criteria in the area.
In the Bailing multi-metal deposit, Heilongjiang province, the parts of mining sources are supplied by the granite of Indo-Chinese epoch. The hydrothermal fluid and the spaces of ore-bodies in the deposit are provided by the granite magmas and the Permian period．
Duhuangling gold deposit occurred within the quartz diorite of Late Yanshan Epoch. The ore-bodies are directly controlled by NEE. trending fault structure zone and the eryptoexplosion beccia pipes. According to the morphotype, occurence, size and grade of the orebody, ore types, mineral association and fabric, division of the mineralization periods and stages, wall rock alteration, enriched law of gold, the geological features of eaepiabu gold deposit are illustrated and the genesis of the deposit is preliminary discussed. Th is is a meso-epithermal alteration type gold deposit which related with subvolcanic rock of Late Yanshan Epoch. Based on the prospecting criteria in the area, the exploration direction in the deep and peripheral deposit is pointed out.
We investigated the geologic feature of Jinehanggou copper-milybdenum ore and learned that the primary source bed of stratum and structure supplied channelway and occurrence space for ore fluid travel. The granodioriteporphyry intrusion from mantle or anatectic origin carried much mineralized material and the material stored at appropriate mineral-forming condition, consequently breccia deposits formed.
The southern band of northern mountain is important one of gold metallogenefic in the Gansu province, on the base of previous stray about the southern band of northern mountain, following the theories of metallogenetic system, a lot of gold deposits were studied in the paper, gold metallogenetic system and metallogenetic time and space were divided, through research of structure envireonment / formation types metallogenetic age and deposit types which gold deposits had evolution. The gold deposits area were found so quickly and better in the southern band of northern mountain．
Aurum of Hetai gold deposit occurs as independent mineral gold and invisible gold. Most of independent mineral gold occurs as natural gold, like enclosure, intergranular, and crevice gold. And invisible gold mineral occurs inside sulfide facies. According to analysis of minerals, the author find typomorphic minerals, which have a close relationship with the gold mineralization directly and also are the ore finding signs in this district, such as the auriferous grey quartz formed in second stage, auriferous hypidiomorphic-xenomorphic granular pyrite and auriferous siderite.
The Zhangsongding-Baliwan copper and gold polymetal metallogenic belt of E-W strike lies in the north of Derbugan deep fracture belt. By discussing the metallotect of Baliwan duplex rock mass, this paper summarizes the ore-forming process that the antecedent porphyry supplied mineralized material and the upper structures controlled the ore run and guides prospecting deposits in this area in the future.
The Hetai gold deposit is strictly controlled by ductile shear zone and mylonite zone．On the one hand，both the background of mineralizing and geological charcter of deposit are especial，the other，the process of mineralizing is complicated．The paper begins with the analysis of ore material source，relation between structure an d mineralizing，physiochemical condition of ore formation and transportation-precipition mechanism of gold．The results of research is that the deposit location is controlled by ductile shear zone and ore materials are multi-sourced but primarily by that from Sinian C bed，subsidiarily by magmatic fluid．The metallogenic model is ductile shear zone+thermal dynamic metamorphison + hydrothermal fluid circulation enrichment．
After more than ten years exploration, only a little resource reserve in Yunxi Ore Field has been left. So it is urgent to find new resources in this area. This article emphasizes the conclusion of geological features and genetic laws using the comparison of prospecting and mining in Yunxi Ore Field, and proposes prospecting directions for the further development of Hetai Deposit.
The gold is a sparse precious metal, having the special resources product of the currency and merchandise dual attribute, the gold has a very big need market. Curently prepare the processing method to have already baked to burn to oxidize a method, heat to press to oxidize a method, living creature to oxidize a method, chemistry to oxidize a met}lod, heap to immerse a method, microwave to oxidize a method mainly etc. towards containing the cyanotype poison to immerse the gold method at home and abroad. But for dificult processing gold mine of immerse without the cyanotype poison the gold method contain the thiourea method, the halide turns a method, many sulphide metthods, the sulphur generation vitriol method, float to choose a method etc. Therefore just in the new method that looks for the new environmental protection type continuously.
Give a sketch of the stufing in using high concentration to concrete tailings; Introduce the calculation methods and proportion of ingredient of the quantity of various stufing, It provides direction basis for the standardize filling technics．
Lawless gold digging activities have caused serious geological problems in Gaize County，Ali Region of Tibet．Those problems，such as sink，landside，etc．，were critical for environmental protection and trafic safety．Based on the investigation on the status of gold digging activities and its impacts to road，the road diseases are analyzed and countermeasures are addressed also．
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