This paper outlines a general status in developing and utilizing mineral resources in China，points out that the key to the indispensable way to sustainable evelopment lies in the resources comprehensive utilization，the paper and proposes comes up with the countermeasure for sustainable development of mineral resources in China．
This paper outlines a general status in developing and utilizing mineral resources in China，points out that the key to the indispensable way to sustainable evelopment lies in the resources comprehensive utilization，the paper and proposes comes up with the countermea sure for sustainable development of mineral resources in China.Xi'an University Architecture＆Technology
Abstract：The trace elemem s as Au，Ni and Cu of basalt，mineralization basalt，lamprophyry，raineralization are not simuhaneouly rich in the Laowangzhai mine．Therefore if is indicated that the gold mineralization did not take place in the basaltic and lamprophyric magmatism and magmatic fluid process.The relative gold content in the mineralization wallrocks is high，and the Cu，Pb，Zn and Au are low，The O of the minef＆Iis＆ti0n basalt，basalt，serious min
eralization amprophyry．thin minerallsafion lamprophyry and serious mineralization lamprophyry are 10．5‰ 8.7 3，11.1‰ ，14.7and 11.2‰ separately.It is shown that mineralization fluid was aot of meteroic origin，but added by flind of meteroie origin at late mineralization stage．The(87Sr/86Sr) ，Nd(0)andfSn/Nd of the hydrothermal ealeite are 0.7211 23±30，1.14 and 0.1 3 respectively.which are unanimous with the crust rocks formed in the ocean.
Tongshi area in Pingyi county is the most important gold mineralized area in western part,Shangdong Province.The gold deposit types are com plicated,can be divided into five types;hydrothermal breccia gold deposit,similar beded disseminated gold deposit in limestone,old karst cave gold deposit,porphyry gold deposit and skarn gold deposit.The form of these gold deposits are related to Tongshi subvoleanie complex.Among these types，hydrotermal breccia gold deposit,similar beded disseminated gold deposit in limestone and porphyry gold deposit are the important prospecting type and direction.
CHIM and CSE are important techniques in geoelectrochemical exploration．Application of these two techniques has led to important progress in the exploration for the concealed Longshan gold-antimony deposit，Xinshao county,Hunan Province,the concealed Qibaoshan gold deposit，Wuli an County,Shandong Province，and the concealed Doanhe gold deposit,Tieli City,Heilongjiang Province.A Persistent gold orebody,4 m in the thichness,
more than i00 m in length and 6 g/t in tenor,has been verified by galleries in the Shizijie-I ilongjie zone,Longshan gold-antimony deposit，Xinshao County,Human Province,and thus a breakthrough in gold prospecting has been effected.
The concept of ancient workings ore deposit is put forward and characteristics of mineralization of ancient workings ore deposit are stated in this paper.By way of analysis of ore controlling conditions of ancient working ore deposit,enrichment laws and prospecting direction at the Longshan ancient workings ore deposit are pointed out.
With the technique of amalgamating ore tailing pelletized to heap leaching,there arrives a low leaching efficiency of no more than 54.7.Howerer,Amalgamating ore tailing is first treated chemically,the crystal stucture of carrier ore is danaged,and the ling scattered gold becones exposed,So the leaching efficiency can reach up to 83.8%．
In essence,analysing reliability of sem icontinuous convey system n surfaee miners in the past is only to analyse reliability of continuous link as a past of the whole semicontinu ous convey system.This paper apples Queuing Theory and add up authors own some stand points to put forward a way to handte reliability problems of discontinuous part in front of continuous link in the whole semicontinuous convey ststem.In addition this paper put forward when calculating the reliability of the semicontinuous of the semieontlnuous convey systern in sur{ace mines.the discontinuous subsystem and a coal bin subsystem should be added to the existed mathematical mode1.So grew mode1 can embody the feature of the whole semi-continuous convey system.
This paper puts forward a genetic program ming method to find scientifically the function of side slope lateral displacement in open pit mines based on actual time series data.This method rules out any disturbance from man has the features of good objectiveness and highly general-utility and can find functions under any circumstances.
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