Metallogenic Alteration Monitoring And Prediction Of Economic Value Of Mineral Resources In Ecologically Fragile Areas Of Inland Plateau Basin

Mineral resources are non-renewable and it’s vital important for one country’s development.It also can promote national economy.The demand for mineral resources of China is increasing,However,with dwindling of the found reserves of mineral resource,new technologies and methods urgently needed for the development and exploration of mineral resources.The spectral resolution of hyperspectral data can reach nanometer level and there are many bands,so that a nearly continuous spectral curve can be extracted from each pixel,and we can obtain the spectral information of fine ground objects.The ecology of inland plateau basin is fragile,with harsh natural environment,backward economic conditions,and insufficient land use.It’s of great practical significance to identify the alteration information based on remote sensing technology,determine the potential mineral resources and economic value,to explore the potential and development direction of land development and utilization in this area.In this paper,west of the Yazigou area is used as a demonstration area,and the GF-5 AHSI hyperspectral data is selected as the main data source to extract the alteration information in the study area and map the altered minerals after data preprocessing.In this area,the potential mineral resources reserves and economic value are estimated to explore the direction of land use in the area.According to the research we can find:(1)We can extract alteration minerals are epidote,chlorite epidote and sericite from image of study area.Epidote minerals in the study area vary significantly from south to north,from sporadic distribution to agglomerate distribution,and from little to most.In addition,that the sericitization alteration is stronger in the south,the chlorite epidote assemblage is weaker,and the inner ring structure in the eastern part of the study area shows strong sericitization superimposed epidote alteration and chlorite epidote alteration.(2)The areas with large prospecting potential in the study area is the inside of the larger annular structure in the north of the socketed annular structure C3.(3)It is inferred that the amount of copper metal in the study area is 3,057.71 tons,the amount of lead metal is 1,256.23 tons;the amount of zinc metal is 11,378.17 tons.The economic value of mineral resources in this area is 346 million yuan,of which copper is 126 million yuan,lead is 19 million yuan,and zinc is 201 mill ion yuan.(4)The potential mineral economic value of the study area is considerable,and we should strength the development of mineral resources in the area to promote the economic development of the area.