研究了白庙子斜发沸石在水热离子交换中阳离子交换容量、配位阳离子交换度及K+、N a+、C a2+离子在该矿样上的交换量.实验发现,该矿铵离子交换容量为1.73 mm o l/g,配位阳离子交换度C a2+>K+>M g2+>N a+.在铵改性矿样NH4Z上K+...研究了白庙子斜发沸石在水热离子交换中阳离子交换容量、配位阳离子交换度及K+、N a+、C a2+离子在该矿样上的交换量.实验发现,该矿铵离子交换容量为1.73 mm o l/g,配位阳离子交换度C a2+>K+>M g2+>N a+.在铵改性矿样NH4Z上K+离子属超容量交换,交换量达78.2 m g/g,对海水提钾有应用价值.在不同离子交换矿样上C a2+交换量NH4Z>N aZ>KZ>O rZ,在钠改性矿样N aZ上C a2+离子交换量可达32.4 m g/g,对硬水软化有应用价值.展开更多
A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a gr...A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a granulite sample from Huangtuling, northern Dabie Mountain yields a Pb-Pb isochron age of (1098 ± 35) Ma, which is interpreted as the timing of peak metamorphism of granulite facies.展开更多
Palaeozoic kimberlites from Mengyin, Shandong and Fuxian, Liaoning, eastern China, contain plenty of mantle xenoliths (peridotites, eclogites) and megacrystic minerals. In-situ electron and ion microprobe analyses on ...Palaeozoic kimberlites from Mengyin, Shandong and Fuxian, Liaoning, eastern China, contain plenty of mantle xenoliths (peridotites, eclogites) and megacrystic minerals. In-situ electron and ion microprobe analyses on garnets from these xenoliths and megacrysts as well as relevant theoretical modeling reveal that these garnets were more or less affected by kimberlitic silicate melts prior to the encapsulation, in which eclogitic garnet from Fuxian, Liaoning Province, was little affected by mantle metasomatism, representing the primitive depleted mantle composition. In contrast, garnet from Mengyin, Shandong Province, and all megacrystic garnets were completely modified by metasomatic melts/fluids and reached perfectly chemical equilibrium, thus reflecting the characteristics of the enriched mantle. It is inferred that old lithospheric mantle beneath the North China craton was fairly strongly modified by metasomatism before Palaeozoic kimberlite emplacement.展开更多
文摘研究了白庙子斜发沸石在水热离子交换中阳离子交换容量、配位阳离子交换度及K+、N a+、C a2+离子在该矿样上的交换量.实验发现,该矿铵离子交换容量为1.73 mm o l/g,配位阳离子交换度C a2+>K+>M g2+>N a+.在铵改性矿样NH4Z上K+离子属超容量交换,交换量达78.2 m g/g,对海水提钾有应用价值.在不同离子交换矿样上C a2+交换量NH4Z>N aZ>KZ>O rZ,在钠改性矿样N aZ上C a2+离子交换量可达32.4 m g/g,对硬水软化有应用价值.
文摘A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a granulite sample from Huangtuling, northern Dabie Mountain yields a Pb-Pb isochron age of (1098 ± 35) Ma, which is interpreted as the timing of peak metamorphism of granulite facies.
文摘Palaeozoic kimberlites from Mengyin, Shandong and Fuxian, Liaoning, eastern China, contain plenty of mantle xenoliths (peridotites, eclogites) and megacrystic minerals. In-situ electron and ion microprobe analyses on garnets from these xenoliths and megacrysts as well as relevant theoretical modeling reveal that these garnets were more or less affected by kimberlitic silicate melts prior to the encapsulation, in which eclogitic garnet from Fuxian, Liaoning Province, was little affected by mantle metasomatism, representing the primitive depleted mantle composition. In contrast, garnet from Mengyin, Shandong Province, and all megacrystic garnets were completely modified by metasomatic melts/fluids and reached perfectly chemical equilibrium, thus reflecting the characteristics of the enriched mantle. It is inferred that old lithospheric mantle beneath the North China craton was fairly strongly modified by metasomatism before Palaeozoic kimberlite emplacement.
