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2008•Acta Mineralogica SinicaRequires access

THE INDICATIVE FUNCTION OF MICRO FABRICS OF ROCKS AND ORES TO THE ORIGIN OF THE SHUIYINDONG GOLD DEPOSIT

Zhang Zhu-ru

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Abstract

The Shuiyindong gold deposit,which occurs in the Longtan Formation of the Upper Permian series,is a super-large,high-grade gold ore deposit.The deposit consists of a number of gold ore bodies which occur in basaltic,siliceous and bioclastic carbonate rocks in the Longtan Formation coal measures.Research on the micro fabrics of rocks and ores indicated that the main gold-carrying mineral is fine-grained pyrite,which possesses regenerated rims,intragrain holes,mold hole fabrics,furring biomineralization structure and mold biomineralization structure.There is a close genetic connection between gold mineralization gold and silicification.Gold and SiO2 were derived from effusion of the Emei basalt and the main gold bodies mostly show penecontemporaneous characteristics with the Emei basalt.The Shuiyindong gold deposit is of sedimentary diagenesis weakly reworking origin.

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What this paper is about

The Shuiyindong gold deposit,which occurs in the Longtan Formation of the Upper Permian series,is a super-large,high-grade gold ore deposit.The deposit consists of a number of gold ore bodies which occur in basaltic,siliceous and bioclastic carbonate rocks in the Longtan Formation coal measures.Research on the micro fabrics of rocks and ores indicated that the main gold-carrying mineral is fine-grained pyrite,which possesses regenerated rims,intragrain holes,mold hole fabrics,furring biomineralization structure and mold biomineralization structure.There is a close genetic connection between gold mineralization gold and silicification.Gold and SiO2 were derived from effusion of the Emei basalt and the main gold bodies mostly show penecontemporaneous characteristics with the Emei basalt.The Shuiyindong gold deposit is of sedimentary diagenesis weakly reworking origin.

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Available abstract

The Shuiyindong gold deposit,which occurs in the Longtan Formation of the Upper Permian series,is a super-large,high-grade gold ore deposit.The deposit consists of a number of gold ore bodies which occur in basaltic,siliceous and bioclastic carbonate rocks in the Longtan Formation coal measures.Research on the micro fabrics of rocks and ores indicated that the main gold-carrying mineral is fine-grained pyrite,which possesses regenerated rims,intragrain holes,mold hole fabrics,furring biomineralization structure and mold biomineralization structure.There is a close genetic connection between gold mineralization gold and silicification.Gold and SiO2 were derived from effusion of the Emei basalt and the main gold bodies mostly show penecontemporaneous characteristics with the Emei basalt.The Shuiyindong gold deposit is of sedimentary diagenesis weakly reworking origin.

Key concepts: Geology, Pyrite, Geochemistry, Basalt, Mineralization (soil science), Mineralogy, Diagenesis, Carbonate

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