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Article Navigation >  Acta Sedimentologica Sinica  > 1998  >  16(2): 61-67

Liu Wenjun, Yi Haisheng, Wen Chungi. Restudy on the Putou Pyrite Ore Deposit[J]. Acta Sedimentologica Sinica, 1998, 16(2): 61-67.
Citation: Liu Wenjun, Yi Haisheng, Wen Chungi. Restudy on the Putou Pyrite Ore Deposit[J]. Acta Sedimentologica Sinica, 1998, 16(2): 61-67.
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Restudy on the Putou Pyrite Ore Deposit

  • Chengdu Institute of Technology, Chengdu 610059

  • Received Date: 1997-03-28
  • Rev Recd Date: 1997-05-27
  • Publish Date: 1998-06-10
  • The Putoupyrite ore deposit, formed in Givetian of Devonian, is a medium-scale stratiform deposit in Chengbu County of Hunan Province, China. The author reported its sedimentary environment in the present journal in 1984, and in this paper its genesis was discussed based on new data. This deposit is located in a N E deep water basin which developed in the rift system of the South China palaeocontinent margin. The ore-bearing section consists of dark siliceous rock and mar1. The ore beds are stratiform and conformably deposited in the synchronous strata. The ore is composed of only pyrite with massive and banded structures. The composition of sulfur isotope is rich in 32S, and its variation range is from -17.4‰ to -30.1‰. The ore-bearing rock and ore are rich in organic carbon, which is sapropel-humic type with higher maturity. Charateristics of the ore texture are widespread framboidal pyrite that consists of micrograined pyrite (d < 1μm) with different crystal forms and ordered or disordered structures, some framboidal pyrite appears massively with pyrite crystal in dense ores . Charateristics of REE and trace element s in the ore and hsted rocks, which conform with the mordern hydrothermal deposits of oceanic rift or rise in the pacific, suggested that their origin is the same. For this reason, the Putoupyrite deposit is a sedexore deposit and its abundant organic matter plays an important role in ore deposits.
  • [1] .刘文均. 湖南城步铺头黄铁矿的沉积环境. 沉积学报, 1984, 2(1): 53～64
    [2] .刘文均, 熊申甫, 夏志芬. 湖南中部中泥盆世棋梓桥期岩相古地理特征. 岩相古地理文集, 第1集. 北京: 地质出版社, 1985. 76～87
    [3] .刘文均, 伊海生, 温春齐等. 华南两类铅锌矿床的有机成矿特点. 见: 叶连俊主编. 生物成矿作用研究.北京: 海洋出版社, 1993. 127～139
    [4] .徐新煌. 湖南城步层状黄铁矿床的地质特征及成矿环境和成矿机理, 南岭地区泥盆系矿床研究. 成都: 四川高校编辑出版发行中心, 1985. 117～160
    [5] .Sawlowicz Z. Pyrite framboids and their development: a new conceptual mechanism. Geol. Rundsch, 1993, 82: 148～156
    [6] .Hekinian R, Haffer T M, Larque T, et al. Hydrothermal Fe and Si Oxyhydroxide Deposits from South Pacific Infraplate Volcanoes and East Pacific Rise Axial and Off-Axial Regions. Econ geol. 1993, 88: 2099～2121
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Publishing history
  • Received:  1997-03-28
  • Revised:  1997-05-27
  • Published:  1998-06-10

Restudy on the Putou Pyrite Ore Deposit

  • Chengdu Institute of Technology, Chengdu 610059
  • Received Date: 1997-03-28
  • Rev Recd Date: 1997-05-27
  • Publish Date: 1998-06-10

Abstract: The Putoupyrite ore deposit, formed in Givetian of Devonian, is a medium-scale stratiform deposit in Chengbu County of Hunan Province, China. The author reported its sedimentary environment in the present journal in 1984, and in this paper its genesis was discussed based on new data. This deposit is located in a N E deep water basin which developed in the rift system of the South China palaeocontinent margin. The ore-bearing section consists of dark siliceous rock and mar1. The ore beds are stratiform and conformably deposited in the synchronous strata. The ore is composed of only pyrite with massive and banded structures. The composition of sulfur isotope is rich in 32S, and its variation range is from -17.4‰ to -30.1‰. The ore-bearing rock and ore are rich in organic carbon, which is sapropel-humic type with higher maturity. Charateristics of the ore texture are widespread framboidal pyrite that consists of micrograined pyrite (d < 1μm) with different crystal forms and ordered or disordered structures, some framboidal pyrite appears massively with pyrite crystal in dense ores . Charateristics of REE and trace element s in the ore and hsted rocks, which conform with the mordern hydrothermal deposits of oceanic rift or rise in the pacific, suggested that their origin is the same. For this reason, the Putoupyrite deposit is a sedexore deposit and its abundant organic matter plays an important role in ore deposits.

Liu Wenjun, Yi Haisheng, Wen Chungi. Restudy on the Putou Pyrite Ore Deposit[J]. Acta Sedimentologica Sinica, 1998, 16(2): 61-67.
Citation: Liu Wenjun, Yi Haisheng, Wen Chungi. Restudy on the Putou Pyrite Ore Deposit[J]. Acta Sedimentologica Sinica, 1998, 16(2): 61-67.
shu

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