The Fanjingshan group, located in the Mt. Fanjing Region, Guizhou Province, is a flysch formation with a thickness of over 10000 meters. Intrusive basic rocks, varying in thickness, consist mainly of layered gabbrodia...The Fanjingshan group, located in the Mt. Fanjing Region, Guizhou Province, is a flysch formation with a thickness of over 10000 meters. Intrusive basic rocks, varying in thickness, consist mainly of layered gabbrodiabase and diabase. Hornstone, spotted slate and ,albite-quartz-slate are commonly recognized in hanging and foot wall rocks as a result of contact metamorphism. Spilite with pillow structure, averaging about 100 meters in thickness, is also widespread. Ultramafic rocks have relatively limited occurrence, accounting for only 13 percent of the total thickness of the intrusives. Alpine ultrabasic rocks have not been found as separate mass. Ultramafic products resulted from in-situ differentiation are noticed and can be assigned to the iron series of ultrabasie rocks. The intrusive basic rocks are classified as subvolcanics that intruded at shallow depth. They are considered to share a common source, to have emplaced into the same position and to be contemporaneous with the sea floor volcanic-spilite, ,and in accordance with its characters, should be assigned to oohidite suit.展开更多
贵州威宁—水城地区铁多金属矿铁品位39.91%,96.86%的铁以赤褐铁的形式存在。为确定该铁矿石适宜的选矿工艺,进行初步的选矿试验。结果表明,在最佳工艺参数下,原矿经球团-直接还原—磨矿(-0.074 mm 85%)—弱磁选选别,可获得铁品位86.19...贵州威宁—水城地区铁多金属矿铁品位39.91%,96.86%的铁以赤褐铁的形式存在。为确定该铁矿石适宜的选矿工艺,进行初步的选矿试验。结果表明,在最佳工艺参数下,原矿经球团-直接还原—磨矿(-0.074 mm 85%)—弱磁选选别,可获得铁品位86.19%、回收率82.97%的铁精矿(海绵铁),指标良好,可供该铁矿资源的开发利用参考。展开更多
Zonal distributien can be noticed in gossan resulted from siderite in carbonate strata, and this can be accounted for by zoning Of ground water. Because siderite is more insoluble than its wall rocks, gossan generally...Zonal distributien can be noticed in gossan resulted from siderite in carbonate strata, and this can be accounted for by zoning Of ground water. Because siderite is more insoluble than its wall rocks, gossan generally develops at the same place of siderite outcrop. Systimatic variation in chemistry is recognizable from ore body upwards to the surface. The gosasn is high in Fe, Mn but impoverished in S, P, Pb,Zn, Ge, Ga, Cd, Ag. This characteristic may serve as an indicator to distinguish siderite gossan from sulphide gossan in this region.展开更多
文摘The Fanjingshan group, located in the Mt. Fanjing Region, Guizhou Province, is a flysch formation with a thickness of over 10000 meters. Intrusive basic rocks, varying in thickness, consist mainly of layered gabbrodiabase and diabase. Hornstone, spotted slate and ,albite-quartz-slate are commonly recognized in hanging and foot wall rocks as a result of contact metamorphism. Spilite with pillow structure, averaging about 100 meters in thickness, is also widespread. Ultramafic rocks have relatively limited occurrence, accounting for only 13 percent of the total thickness of the intrusives. Alpine ultrabasic rocks have not been found as separate mass. Ultramafic products resulted from in-situ differentiation are noticed and can be assigned to the iron series of ultrabasie rocks. The intrusive basic rocks are classified as subvolcanics that intruded at shallow depth. They are considered to share a common source, to have emplaced into the same position and to be contemporaneous with the sea floor volcanic-spilite, ,and in accordance with its characters, should be assigned to oohidite suit.
文摘贵州威宁—水城地区铁多金属矿铁品位39.91%,96.86%的铁以赤褐铁的形式存在。为确定该铁矿石适宜的选矿工艺,进行初步的选矿试验。结果表明,在最佳工艺参数下,原矿经球团-直接还原—磨矿(-0.074 mm 85%)—弱磁选选别,可获得铁品位86.19%、回收率82.97%的铁精矿(海绵铁),指标良好,可供该铁矿资源的开发利用参考。
文摘Zonal distributien can be noticed in gossan resulted from siderite in carbonate strata, and this can be accounted for by zoning Of ground water. Because siderite is more insoluble than its wall rocks, gossan generally develops at the same place of siderite outcrop. Systimatic variation in chemistry is recognizable from ore body upwards to the surface. The gosasn is high in Fe, Mn but impoverished in S, P, Pb,Zn, Ge, Ga, Cd, Ag. This characteristic may serve as an indicator to distinguish siderite gossan from sulphide gossan in this region.
