Rare earth (RE) industries in Inner Mongolia experienced a rapid development in recent years, which is mainly reflected in the aspects of primary products and new materials, but the development of its application is s...Rare earth (RE) industries in Inner Mongolia experienced a rapid development in recent years, which is mainly reflected in the aspects of primary products and new materials, but the development of its application is still slow in progress. In particular, the over-competition in primary products not only results in the unfavorable situation for environmental protection and ineffective use of rare earth resources, but also brings about many problems for the survival and development of enterprises. Rare earth industry is not an industry with large scale, and its contribution to the economy is generated by applying rare earths in other industries. Therefore, the development level of rare earth industry can not be evaluated by its economic scale. The rare earth industry in Inner Mongolia will place great emphasis on the development of “Five bases”, “One center”, and “Six industrial chains”. Based on these focal points the products structure should be upgraded, a system for RE human resource in which talents can be shared in the industries should be built up, the level of research and development and technology introduction should be improved, more channels for financing should be developed and more fund solutions should be provided, comprehensive environment that will be favorable to the concentration and development of the industries should be promoted greatly, and a supporting system for the industrial policies should be built up in order to strengthen the advantages and competitiveness of RE industry.展开更多
The rare earth elements(REE)content of the coal in the Erlian Basin was determined by inductively coupled plasma mass spectrometry(ICP-MS),and it turns out that the REE content from different geological age shows a si...The rare earth elements(REE)content of the coal in the Erlian Basin was determined by inductively coupled plasma mass spectrometry(ICP-MS),and it turns out that the REE content from different geological age shows a significant difference:The REE content of the coal in the Jurassic Alatanheli Group is from 152.05×10^(−6) to 1416.21×10^(−6),with an average value of 397.31×10^(−6),and the relative concentration factor shows enriched;the REE content of the coal in Early Cretaceous Baiyanhua Group is from 20.65×10^(−6) to 102.53×10^(−6),the mean value is 49.06×10^(−6),and the relative concentration factor shows normally.The REE distribution patterns samples in Jurassic and Cretaceous shows the difference:The REE pattern in Jurassic coal mainly manifests as H-type distribution,with the Y,Lu positive anomaly,it is speculated that the fluid carried REE ions into the coal-bearing basin,and the heavy REE gather in the coal due to the different chemical properties of each REE.The REE occurrence mode is presumed to be mainly organic.Flat type is the REE main distribution pattern in Cretaceous coal.The REE patterns in clastic rocks of the roof,parting and floor of coal seam are similar to the REE patterns in the coal and the most possible reason is that the REE main source is from the clastic rock.It showed that the coal of the Early Jurassic,especially of Amugulen coalfield has resource value.展开更多
The Diyanqinamu Mo deposit, a newly discovered porphyry deposit in the northern-central part of the Great Xing'an Range, Inner Mongolia, China, is characterized by widely distributed fluorite. It is important to n...The Diyanqinamu Mo deposit, a newly discovered porphyry deposit in the northern-central part of the Great Xing'an Range, Inner Mongolia, China, is characterized by widely distributed fluorite. It is important to note that almost all the fluorite that is paragenetic with molybdenite is purple. The Tb/Ca–Tb/La ratios of these purple fluorite samples show that they have a hydrothermal origin.The unidirectional solidification texture at the apex of the aplitic granite and the low F contents in the andesite suggest that most of F in fluorite was derived from granitic melts. These observations suggest that the fluorite was related to the magmatic-hydrothermal fluids. All the fluorite separates have consistent total REE contents with LREE-depleted, HREE-enriched, negative Eu anomaly,unapparent Ce anomaly and positive Y anomaly. These characteristics are significantly different than those of country granite, andesite and tuff whole-rock. The positive Y anomaly of the fluorite separates implies that the hydrothermal fluids migrated a long distance, as suggested by the fact that the fluorite-molybdenite veins were mostly hosted in andesite and tuff, far from the Mo ore-forming granites. The features of LREE-depleted and HREE-enriched fluorite are due to the REE-complex in the F-enriched fluids during migration. The stronger negative Eu anomaly of fluorite than those of country rocks suggests that the Eu anomaly of the original hydrothermal fluid was enhanced by the high temperature(generally above 200 or250 °C). The widespread magnetite in the studied deposit indicates that the magmatic-hydrothermal fluid was oxidized at early stage. On the other hand, the pyrite was also paragenetic, with the molybdenite and unapparent Ce anomaly implying that the hydrothermal fluid probably experienced oxygen fugacity decreasing during migration,which is important for Mo mineralization.展开更多
In 1944-1945, the Inner Mongolia Earth Axis(IMEA) was proposed by Prof. HUANG Ji-qing as a consistently uprising unit of Archean basement and a tectonic unit in 'On Major Tectonic Forms of China'. It is distri...In 1944-1945, the Inner Mongolia Earth Axis(IMEA) was proposed by Prof. HUANG Ji-qing as a consistently uprising unit of Archean basement and a tectonic unit in 'On Major Tectonic Forms of China'. It is distributed on the north margin of North China Platform. However, in 1987-1989, the authors made an expedition along the so-called 'IMEA' when they studied the geotectonic evolution of the north margin.展开更多
文摘Rare earth (RE) industries in Inner Mongolia experienced a rapid development in recent years, which is mainly reflected in the aspects of primary products and new materials, but the development of its application is still slow in progress. In particular, the over-competition in primary products not only results in the unfavorable situation for environmental protection and ineffective use of rare earth resources, but also brings about many problems for the survival and development of enterprises. Rare earth industry is not an industry with large scale, and its contribution to the economy is generated by applying rare earths in other industries. Therefore, the development level of rare earth industry can not be evaluated by its economic scale. The rare earth industry in Inner Mongolia will place great emphasis on the development of “Five bases”, “One center”, and “Six industrial chains”. Based on these focal points the products structure should be upgraded, a system for RE human resource in which talents can be shared in the industries should be built up, the level of research and development and technology introduction should be improved, more channels for financing should be developed and more fund solutions should be provided, comprehensive environment that will be favorable to the concentration and development of the industries should be promoted greatly, and a supporting system for the industrial policies should be built up in order to strengthen the advantages and competitiveness of RE industry.
基金This study was supported by the project of the China Geological Survey(DD20160187)the Science and Technology Special Project of the China National Administration of Coal Geology(ZMKJ-2019-J02).
文摘The rare earth elements(REE)content of the coal in the Erlian Basin was determined by inductively coupled plasma mass spectrometry(ICP-MS),and it turns out that the REE content from different geological age shows a significant difference:The REE content of the coal in the Jurassic Alatanheli Group is from 152.05×10^(−6) to 1416.21×10^(−6),with an average value of 397.31×10^(−6),and the relative concentration factor shows enriched;the REE content of the coal in Early Cretaceous Baiyanhua Group is from 20.65×10^(−6) to 102.53×10^(−6),the mean value is 49.06×10^(−6),and the relative concentration factor shows normally.The REE distribution patterns samples in Jurassic and Cretaceous shows the difference:The REE pattern in Jurassic coal mainly manifests as H-type distribution,with the Y,Lu positive anomaly,it is speculated that the fluid carried REE ions into the coal-bearing basin,and the heavy REE gather in the coal due to the different chemical properties of each REE.The REE occurrence mode is presumed to be mainly organic.Flat type is the REE main distribution pattern in Cretaceous coal.The REE patterns in clastic rocks of the roof,parting and floor of coal seam are similar to the REE patterns in the coal and the most possible reason is that the REE main source is from the clastic rock.It showed that the coal of the Early Jurassic,especially of Amugulen coalfield has resource value.
基金financially supported by the 12th Five-Year Plan Project of the State Key Laboratory of Ore Deposit Geochemistry, Chinese Academy of Sciences (SKLODGZY125-02)the National Natural Science Foundation of China (41272111)
文摘The Diyanqinamu Mo deposit, a newly discovered porphyry deposit in the northern-central part of the Great Xing'an Range, Inner Mongolia, China, is characterized by widely distributed fluorite. It is important to note that almost all the fluorite that is paragenetic with molybdenite is purple. The Tb/Ca–Tb/La ratios of these purple fluorite samples show that they have a hydrothermal origin.The unidirectional solidification texture at the apex of the aplitic granite and the low F contents in the andesite suggest that most of F in fluorite was derived from granitic melts. These observations suggest that the fluorite was related to the magmatic-hydrothermal fluids. All the fluorite separates have consistent total REE contents with LREE-depleted, HREE-enriched, negative Eu anomaly,unapparent Ce anomaly and positive Y anomaly. These characteristics are significantly different than those of country granite, andesite and tuff whole-rock. The positive Y anomaly of the fluorite separates implies that the hydrothermal fluids migrated a long distance, as suggested by the fact that the fluorite-molybdenite veins were mostly hosted in andesite and tuff, far from the Mo ore-forming granites. The features of LREE-depleted and HREE-enriched fluorite are due to the REE-complex in the F-enriched fluids during migration. The stronger negative Eu anomaly of fluorite than those of country rocks suggests that the Eu anomaly of the original hydrothermal fluid was enhanced by the high temperature(generally above 200 or250 °C). The widespread magnetite in the studied deposit indicates that the magmatic-hydrothermal fluid was oxidized at early stage. On the other hand, the pyrite was also paragenetic, with the molybdenite and unapparent Ce anomaly implying that the hydrothermal fluid probably experienced oxygen fugacity decreasing during migration,which is important for Mo mineralization.
文摘In 1944-1945, the Inner Mongolia Earth Axis(IMEA) was proposed by Prof. HUANG Ji-qing as a consistently uprising unit of Archean basement and a tectonic unit in 'On Major Tectonic Forms of China'. It is distributed on the north margin of North China Platform. However, in 1987-1989, the authors made an expedition along the so-called 'IMEA' when they studied the geotectonic evolution of the north margin.
