Silurian, Devonian and Carboniferous geological bodies in the Mianxian-Lueyang (Mian-Lue) collisional belt (MLB) and its neighbouring areas, southern Qinling Mountains, China, show similar characteristics of having un...Silurian, Devonian and Carboniferous geological bodies in the Mianxian-Lueyang (Mian-Lue) collisional belt (MLB) and its neighbouring areas, southern Qinling Mountains, China, show similar characteristics of having undergone deformation of two stages. The earlier one, which is inferred to be related to collisional orogeny between the Yangtze and Sino-Korean palaeocontinents based on previous geological data, is responsible for large-scale, north-verging recumbent folds and overthrusts, and associated with low greenschist fades metamorphism. 40Ar/39Ar dating of three muscovite samples taken from different localities yields plateau ages of 226.9±0.9 and 219.5±1.4 Ma and an apparent age of 194.5±3.0 Ma. Thus, the late Triassic collision between the Yangtze and Sino-Korean palaeocontinents has been constrained.展开更多
Some processes of sulfating roasting and water leaching of crude Mianning RE concentrate ore, of fine Mianning RE concentrate ore, of Baotou RE concentrate ore and of their mixture were investigated.The result shows t...Some processes of sulfating roasting and water leaching of crude Mianning RE concentrate ore, of fine Mianning RE concentrate ore, of Baotou RE concentrate ore and of their mixture were investigated.The result shows that the mixture of Mianning and Baotou RE concentrate ore has the optimum leaching rate and rate of recovery when the mixture ratio is 1:4.The recovery rate of the mixture is higher by 14.76% than that of crude Mianning RE concentrate ore, by 5.0 % than that of Mianning fine RE concentrate ore and by 2.4 % than that of Baotou RE concentrate ore.展开更多
The Mian Erkang capsules made by us is a high potency calcium preparation with actions of hypnosis and anti-decrepitude. Melatonin is one of the main effective components which can hypnotize, calm, relieve pain, incre...The Mian Erkang capsules made by us is a high potency calcium preparation with actions of hypnosis and anti-decrepitude. Melatonin is one of the main effective components which can hypnotize, calm, relieve pain, increase the body's immunity, be used for cancer therapy, and delaydecrepitude. A rapid, sensitive, and accurate HPLC method for the determination of melatonin in Mian Erkang capsules is described in this paper.展开更多
The Qinling is a complex orogen which has undergone multiphase collision among Yangtze Plate, Qinling microplate and North China Plate. As for the convergent age of Mian-Lüe ocean between Yangtze Plate and Qinlin...The Qinling is a complex orogen which has undergone multiphase collision among Yangtze Plate, Qinling microplate and North China Plate. As for the convergent age of Mian-Lüe ocean between Yangtze Plate and Qinling microplate, there are two opinions all along: Caledonian and Indosinian epoch. Well-preserved Early Carboniferous fossil radiolarias fauna firstly discovered from siliceous rock interlayers of ophiolitic melange near Sanchazi Village, Lueyang County indicate that the Mian-Lüe ocean basin lasted to late Paleozoic.展开更多
Mianning-Dechang Himalayan REE Metallogenetic Belt in Sichuan Province lies along the western margin of the Yangtze Craton. We have conducted detailed mineralogical studies on ore minerals collected from Maoniuping an...Mianning-Dechang Himalayan REE Metallogenetic Belt in Sichuan Province lies along the western margin of the Yangtze Craton. We have conducted detailed mineralogical studies on ore minerals collected from Maoniuping and Dalucao, the two largest deposits in the belt. With optical microscope, SEM/EDS, and EPMA, three rare intermetallic minerals, i.e., zinccopperite (Cu2Zn), Sn- bearing native copper, and Cu-bearing jupiter were found to occur in the main ore along with barite, fluorite, apatite, sulfide and bastnaesite. Since the conditions under which zinccopperite and Sn- bearing native copper formed are quite unique, finding of these minerals, for the first time in domestic REE deposits, has significant implications for the genesis of the ore deposits in which they occur. In comparison with Cu-Zn intermetallic minerals in other occurrences, we propose that the formation of this REE metallogenetic belt is associated with fast upwelling of the Himalayan magma from deep source.展开更多
文摘Silurian, Devonian and Carboniferous geological bodies in the Mianxian-Lueyang (Mian-Lue) collisional belt (MLB) and its neighbouring areas, southern Qinling Mountains, China, show similar characteristics of having undergone deformation of two stages. The earlier one, which is inferred to be related to collisional orogeny between the Yangtze and Sino-Korean palaeocontinents based on previous geological data, is responsible for large-scale, north-verging recumbent folds and overthrusts, and associated with low greenschist fades metamorphism. 40Ar/39Ar dating of three muscovite samples taken from different localities yields plateau ages of 226.9±0.9 and 219.5±1.4 Ma and an apparent age of 194.5±3.0 Ma. Thus, the late Triassic collision between the Yangtze and Sino-Korean palaeocontinents has been constrained.
文摘Some processes of sulfating roasting and water leaching of crude Mianning RE concentrate ore, of fine Mianning RE concentrate ore, of Baotou RE concentrate ore and of their mixture were investigated.The result shows that the mixture of Mianning and Baotou RE concentrate ore has the optimum leaching rate and rate of recovery when the mixture ratio is 1:4.The recovery rate of the mixture is higher by 14.76% than that of crude Mianning RE concentrate ore, by 5.0 % than that of Mianning fine RE concentrate ore and by 2.4 % than that of Baotou RE concentrate ore.
文摘The Mian Erkang capsules made by us is a high potency calcium preparation with actions of hypnosis and anti-decrepitude. Melatonin is one of the main effective components which can hypnotize, calm, relieve pain, increase the body's immunity, be used for cancer therapy, and delaydecrepitude. A rapid, sensitive, and accurate HPLC method for the determination of melatonin in Mian Erkang capsules is described in this paper.
文摘The Qinling is a complex orogen which has undergone multiphase collision among Yangtze Plate, Qinling microplate and North China Plate. As for the convergent age of Mian-Lüe ocean between Yangtze Plate and Qinling microplate, there are two opinions all along: Caledonian and Indosinian epoch. Well-preserved Early Carboniferous fossil radiolarias fauna firstly discovered from siliceous rock interlayers of ophiolitic melange near Sanchazi Village, Lueyang County indicate that the Mian-Lüe ocean basin lasted to late Paleozoic.
文摘Mianning-Dechang Himalayan REE Metallogenetic Belt in Sichuan Province lies along the western margin of the Yangtze Craton. We have conducted detailed mineralogical studies on ore minerals collected from Maoniuping and Dalucao, the two largest deposits in the belt. With optical microscope, SEM/EDS, and EPMA, three rare intermetallic minerals, i.e., zinccopperite (Cu2Zn), Sn- bearing native copper, and Cu-bearing jupiter were found to occur in the main ore along with barite, fluorite, apatite, sulfide and bastnaesite. Since the conditions under which zinccopperite and Sn- bearing native copper formed are quite unique, finding of these minerals, for the first time in domestic REE deposits, has significant implications for the genesis of the ore deposits in which they occur. In comparison with Cu-Zn intermetallic minerals in other occurrences, we propose that the formation of this REE metallogenetic belt is associated with fast upwelling of the Himalayan magma from deep source.
