Typomorphic Characteristics of Pyrite from the Linglong Gold Deposit: Its Vertical Variation and Prospecting Significance
详细信息
- 责任者：Shen Junfeng (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Li Shengrong
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(3)
- 关键词：金矿 ; gold ores ; 黄铁矿 ; pyrite ; 标型特征 ; typomorphic characteristic ; 山东 ; Shandong Province
- 页码：p.55-75
- 图表：illus., 9 tables, 46 refs.
- 分类号：1001
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
Linglong Gold deposit is one of largest quartz vein gold deposits in Jiaodong region.Its resources quantity was seriously reduced by about 50 years mining,so it is very important to evaluate the deep resources potential and prospecting.Based on genetic and prospecting mineralogy theory,the pyrite which is main mineral loaded gold has been studied systemtically on the typomorphic characteristics by the mineralogy and mineral geochemistry methods.The results showed that the following typomorphic characteristics of the pyrite are very significant for prospecting:(1) the fine grain pyrite with irregular pyritohedron or complicated combinate form are gold enriched;(2) the S/Fe value increases with depth increasing;(3) high total quantities of trace elements in pyrite is one of important signature for prospecting enriched gold body,and the rare earth elements characteristics showed that the pyrite came from the earth deep;(4) the occurrence rate of the P-conductor type pyrite are more than 60% for the gold vein No.55 in the Western Mountain mine area,and the denudation degree is about 36.67%-47.73%,which means that the prospecting potential will be better in deep of the vein;(5) the trace element(As+Sb+Te),(Cu+Pb+Zn) and(Co+Ni+Ti+Cr) assemblies in pyrite are varied as cyclic oscillation along vertical in the Eastern Mountain area,and the occurrence rate of the P-conductor type pyrite is more than 39.63% in average,and the denudation degree is about 32.92%-75.40%,suggesting that the prospecting potential will be better in deep of the area;and(6) the thermoelectricity mapping of pyrite for the gold vein No.47 at Dakaitou in the Eastern Mountain area was carried out,and the result showed that great prospecting potential exists under-770 m elevation between exploration line 93 and 75,also between exploration line 72 and 63.All the typomorphic characteristics of the pyrite mentioned above are very significant for deep gold prospecting in Linglong gold mine.
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