Daxin gold deposit in Hunan province are hosted by the Sinian gravel - bearing sand-stone slate, and are closely controlled by the faults. The mineralizing stage of these deposits can be divided into two periods: i.e. period of hydrothermal mineralizing and period of epigenic mineralizing, and the former one is the primary mineralizing period. These gold deposits should belong to the type of magmatic hydrothermal gold deposits that were mainly occurred in the fractured altered rocks. Strata, structure/tectonic and magmatism are the three important factors that controlled the formation of Daxin gold deposits.
This article is on the foundation of“Laozuoshan gold ore area east weast ore belt exploradon reports”，unifies the author many year ore area hydrology geology work experience，the structure crevasse water-bearing stratum proposed to the east ore belt east，confirmed F12 fault sole structure crevasse water-bearing zone existence．
This paper presents the metallogenie environment and control factors of gold mine in the west part of southern Beishan Area, Gansu Province, and discusses the metallogenic period and spatial distribution of the gold mine. The gold mine origins from the gold enriched volcanic and sedimentary rock of Ordovieian. Carbonic and Dias. The formation of gold mine is closely related to the intrusive bodys of granite. which are formed between later Caledonian and Hercynian. And the deep faults and regional faults regulate the loeations of the gold mine.
The Shabaoshi gold deposit is located in northearth of the Erguna uplift and the side of the upper Heilongjiang depression. The Shabaoshi gold deposit occurs in Middle Jurassic land facies clastic rock. there are 5 ore veins. The mainly ore types are the altered sandstone. Alteration includes silicification, seficitization, carbonatization. The average grade of gold is 1.00-19.57×10-6. The metallogenic type belongs to the meso-epithermal altered hydrothermal solution type gold deposits. the ore bodies are controlled by SN and NNW trend fault. There is a good prospect exploration for deep of Ⅱ-1 orebodies．
The scheelite ore genesis type be divided (namely quartz vein - skarn type、skarn type、quartz vein type three major types) based on mineralize geological bakeground、Ore geological characteristics、mineral types in this rext; It mineralized the law was summarized correctly according to tlle mineral substance source、the ore period、the ore contral factor and the ore series, etc、The ones that took in the analyzing area further the Ore - exploration prospect on this basis.
This article take Laozuoshan gold ore area exploration time water analysis material and area the water source Iuck river water analysis material as the basis. referrd to internationally drinks the natural mineral water stand to propse three kind of mineral water types, had pointed out various types mineral water distribution and the characteristic, and introduced with emphasis metasillicio silicic acid - strontium drinks the natural mineral water the hydrochemistry characteristic, might take the next development home court mineral water resources the basis.
The content of gold of certain gold ore containing high content of arsenic is 17g/t-l8g/t, and the gold ore contains 20.1％- 20.5％ (rnass fraction) arsenic, 18.46％ sulfur and 3.05％ lead, and gold is hardly cyanide leached mainly since parceled up by arsenide and sulphuret. The gold cyanide leaching rate is 56.17％ by direct roasting, but within 81.48％ with addition of auxiliary agent, then reaches as high as 87％- 90％ with addition of 2kg/t leaching agent and improves the velocity of cyanidation as well.
Some small mines which located in remote place since they are lack of data of measuring control, and need to establish independent coordinate system to solve correspond measuring issues. Meantime, lots of hanging compass should be used in secondary lanes in medium and small sized mines. This paper is giving a simple and effective method for unifying compass guiding line of independent cordinate system and high precision controlling cordinate.
This paper is giving some checking methods of round-tower building's vertical angle and they are suitable to the process of construction and usage in this type of buildings.
Information Resource Planning (IRP) is the basic project in the enterprise information. Through erecting basic criterion of Information Resource Management in the process of strategic data planning, IRP is the way which can solve the problem of information integration and application system reengineering. There are some discussion about Zhaojin Mining's IRP in this paper, which take HR sub-system for example．
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