| 江西盘古山石英脉型钨矿床钨铋矿物特征及矿物的垂直分带 |
| 点此下载全文 |
| 引用本文：.1986.Characteristics And Vertical Zoning Of Tungsten-Bismuth Minerals In The Pangushan Quartz-Vein Type Tungsten Deposit Of Jiangxi Province[J].Mineral Deposits,5(2):63~74 |
| Hits: 2228 |
| Download times: 1491 |
|
| |
| Characteristics And Vertical Zoning Of Tungsten-Bismuth Minerals In The Pangushan Quartz-Vein Type Tungsten Deposit Of Jiangxi Province |
|
|
| Abstract:The Pangushan quartz-vein type tungsten deposit has great vertical extension and complicated ore mineral constituents characterized by obvious vertical zoning. A study of its mineralogical zoning is not only of remarkable significance in understanding the zonation of tungsten deposits in Nanling area, but of considerable referential value in ore prospecting, especially in blind orebody search, and in comprehensive utilization of the mineral resources as well. The vertical mineralogical zoning of the Panushan deposit finds it expression in the following aspects: 1. From top to the depth, tungsten-bismuth quartz veins show regular variations in texture and structure. The orientations of the (100) face of the wolframite crystals in the wolframite ore column are also different in diverse part of the orebody: in the upper part, the wolframite crystals are in random arrangement, assuming the network shape, in the funnel-like middle part, all these crystals grow perpendicular to the vein wall, with the (100) face essentially normal to the strike of the ore veins, in the lower part, however, (100) face is not wholly normal to the strike of the vein wall though the growth of the wolframite crystals is basically perpendicular to the vein wall. 2. Mineral assemblages show regular variation in space, with minerals of high temperature assemblage such as zinnwaldite, tourmaline and cassiterite in the upper part whereas those of lower temperature assemblage such as bismuth sulfosalts and tellurobismuthite group in the lower part. 3. Wolframite in the lower part contains more manganese than that in the upper part; the physical properties of wolframite also show regular variation with increasing MnO; from the upper to the lower, homogenization temperature of quartz tends to fall; the thermal luminescence curve varies regularly in space too, especially below the 585 level its shape approaches that of the barren quartz vein. 4. The spatial variations in Bi2S3~PbS series and tellurobismuthite group are characterized by downward depletion in sulfur. |
| View Full Text View/Add Comment Download reader |
|
|
|
