Iron Coated Grains and Microorganic Process in Their Formation from the Xuanlong Area,Hebei Province

Liu Min; Ye Lianjun; Chen Zhiming; Chen Qiying

Based on the detailed determination under microscope, the comparison with the texture, shape and composition of iron stromatolites, as well as on the analyses and studies of stable isotopes and organic geochemistry of oolitic ores from the Xuanlong area, the paper proposed preliminarily that ooliticores actually are coated grains by the formation of microorganisms. They can be divided into oncolites, microorganicoolites and piolites in the terms of shape. Moreover, the paper disscussed the microorganic mineralization of iron coated grains.

1. Department of Geography, East China Normal University, Shanghai 200062;

2. Institute of Geology, Chinese Academy of Sciences, Beijing 100029

Received Date: 1997-05-26

Rev Recd Date: 1997-07-24

Publish Date: 1998-06-10

Key words:

Abstract: Based on the detailed determination under microscope, the comparison with the texture, shape and composition of iron stromatolites, as well as on the analyses and studies of stable isotopes and organic geochemistry of oolitic ores from the Xuanlong area, the paper proposed preliminarily that ooliticores actually are coated grains by the formation of microorganisms. They can be divided into oncolites, microorganicoolites and piolites in the terms of shape. Moreover, the paper disscussed the microorganic mineralization of iron coated grains.

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Reference (18)

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Iron Coated Grains and Microorganic Process in Their Formation from the Xuanlong Area,Hebei Province

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