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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (5): 39-46.doi: 10.11872/j.issn.1005-2518.2017.05.039

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The Crystal Form Typomorphism of Pyrite and Its Variation Regularity and Prospecting Significance in Daiwangshan Gold Deposit, Inner Mongolia

WANG Xiaoqing 1,2,YANG Xingke 2,RUI Huichao 2   

  1. 1.The 214 Geologic Prospecting Party of Shanxi Provincial Geological Prospecting Bureau,Yuncheng    044000,Shanxi,China;
    2.School of Earth Science and Resources,Chang’an University,Xi’an    710054,Shaanxi,China
  • Received:2017-07-09 Revised:2017-08-29 Online:2017-10-30 Published:2018-02-12

Abstract:

Pyrite is the most common and important gold-bearing minerals in gold deposits.The color,crystal form and structure of pyrite can be used to evaluate the gold potentiality of ore.Through the method of combination of hand specimen observation,chemical analysis and microscopic analysis,based on the study of typomorphic characteristics of pyrite in Daiwangshan gold deposit,Aohanqi,Inner Mongolia,this paper summarized the typomorphic characteristics of pyrite with the gold potentiality of ore.The results show that the following typomorphic characteristics are very significant for prospecting:pyrite with rich gold is light yellow,yellow,dark yellow,but yellow white with low gold content;the content of pyrite and gold grade is positively related;gold-bearing properities of pyritohedron is better than the cube;the pyrite with complex crystal shape,subidiomorphic and xenomorphic,the fine grain,fracture development are gold enriched.Pyrite or its oxide (limonite) with vesicular,banded,disseminated,stockwork structure are gold enriched.

Key words: pyrite, gold deposit, crystal form, gold-bearing properities, pyritohedron, typomorphic characteristics

CLC Number: 

  • P578

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