| 粤北清远—英德地区震旦系含金性评价的地球化学准则 |
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| 引用本文： | 彭少梅,伍广宇,张奋生,肖光铭.粤北清远—英德地区震旦系含金性评价的地球化学准则[J].地质找矿论丛,1991,6(3):25-39. |
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| 作者姓名： | 彭少梅 伍广宇 张奋生 肖光铭 |
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| 作者单位： | 中南工业大学地质系 长沙
(彭少梅)，广东省地质矿产局706地质大队 广东省韶关市
(伍广宇，张奋生)，广东省地质矿产局706地质大队 广东省韶关市(肖光铭) |
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| 摘 要： |
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| 关 键 词： | 震旦纪 矿源层 金矿 矿化 地球化学 |
THE GEOCHEMTCAL CRITERIA TO DISCRIMINATE THE Au-BEARING PROPERTY OF METAMORPHIC SINIAN STRATA IN QI NGYUAN-YINGDE AREA NORTHERN GUANGDONG PROCINCE |
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| Peng Shaomei,Wu Guangyu,Zhang Fensheng and Xiao Guangming.THE GEOCHEMTCAL CRITERIA TO DISCRIMINATE THE Au-BEARING PROPERTY OF METAMORPHIC SINIAN STRATA IN QI NGYUAN-YINGDE AREA NORTHERN GUANGDONG PROCINCE[J].Contributions to Geology and Mineral Resources Research,1991,6(3):25-39. |
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| Authors: | Peng Shaomei Wu Guangyu Zhang Fensheng and Xiao Guangming |
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| Institution: | Department of Geology, Gentral South University of Technology, Changsha;No. 706 Geological Party of Bureau of Geology and Mineral Resources of Guangdong Province, Shaoguan;No. 706 Geological Party of Bureau of Geology and Mineral Resources of Guangdong Province, Shaoguan;No. 706 Geological Party of Bureau of Geology and Mineral Resources of Guangdong Province, Shaoguan |
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| Abstract: | It is studied in detail in this paper that the contents and the association features of Au and other microelements, the distriution types, geochemical characterized values of Au and its distributions inminerals in the auriferous and nonauriferous metamorphic Sinian strata in Qingyuan-Yingde area,Northern Guangdong Province. Then, having compored the metallogenic element associations of theSinian strata with those of the three types of gold deposit in the auriferous Sinian strata, the authorspropose seven geochemical criteria to discriminate the Au-bearing property of Sinian strata in the area.Thus, the Sinian strata are auriferous when in them (1) Au is strongly concentrated and Au-abundanceis high. (2) the ratio Xg-Sa between the geometric mean value and the arithmetic mean value of Aucontent is relatively low and the ratio Cv between the standard deviation and the arithmetic mean valueis relatively high. (3) the histograms of Au-content are multitop and deviate from normal distribution.At the same time,the histograms of logarithm of Au-content are also multitop and deviate from normaldistribution. (4) the proportion of easily-released Au is relatively high. (5) element associations are thesame as or smilar to the metallogenic element associations of the gold deposits in the area. (6)the geo-logical history shown by element associations is the same as or similar to that shown by the metallo-genic element associations of the gold deposits in the area. Then on the contrary, the Sinian Strata arenonauriferous. |
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