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现代地质 ›› 2017, Vol. 31 ›› Issue (02): 278-289.

• 矿物学、岩石学与矿床学 • 上一篇    下一篇

黑龙江省嫩江—黑河构造混杂岩区永新金矿热液蚀变与矿化关系定量及定位研究

袁茂文1(), 曾勇杰1, 李成禄1,2, 李士胜1, 李胜荣1()   

  1. 1.中国地质大学(北京) 地球科学与资源学院,北京 100083
    2.黑龙江省地质调查研究总院,黑龙江 哈尔滨 150036
  • 收稿日期:2016-09-27 修回日期:2016-12-20 出版日期:2017-04-10 发布日期:2017-04-25
  • 通讯作者: 李胜荣,男,教授,博士生导师,1956年出生,矿物学、岩石学、矿床学专业,主要从事成因矿物学与找矿矿物学和环境与生命矿物学的研究。Email:lisr@cugb.edu.cn
  • 作者简介:袁茂文,男,硕士研究生,1993年出生,矿物学、岩石学、矿床学专业,主要从事成因矿物学与找矿矿物学研究。Email:851497705@qq.com
  • 基金资助:
    黑龙江省国土资源科研项目“黑龙江省嫩江-黑河构造混杂岩地区成矿规律研究与找矿预测”(黑国土科研201603);国家重点研发计划“深地资源勘查开采”重点专项课题(2016YFC0600106)

Quantitative and Positioning Study on the Hydrothermal Alteration and Mineralization Relationship of the Yongxin Gold Deposit in the Nenjiang-Heihe Mélange Zone, Heilongjiang Province

YUAN Maowen1(), ZENG Yongjie1, LI Chenglu1,2, LI Shisheng1, LI Shengrong1()   

  1. 1. School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China
    2. Heilongjiang Institute of Geological Survey,Harbin,Heilongjiang 150036,China
  • Received:2016-09-27 Revised:2016-12-20 Online:2017-04-10 Published:2017-04-25

摘要:

黑龙江省嫩江县永新金矿是近几年在嫩江—黑河构造混杂岩地区新发现的大型断裂带蚀变岩型金矿床,矿石矿物主要为碲金矿、碲金银矿、自然金,有少量的硫化物及氧化物。通过钾长石化带、绢云母化带及硅化带厚度与矿体厚度的线性关系分析得出,本区钾长石化带厚度、硅化带厚度与矿体厚度呈正相关关系,绢云母化带厚度与矿体厚度呈负相关关系。蚀变带厚度及矿体厚度水平面投影结果表明,矿区内热液蚀变在水平方向上具有明显的分带现象,自矿区东南到西北呈“阶梯状”分布,且绢云母化带厚度高值区、钾长石化带厚度高值区及硅化带厚度高值区在各阶梯中具有一定的对应关系。据以上分析,永新金矿成矿流体来自北西方向,矿体总体向北西延伸,暗示矿区西北深部具有较好的找矿前景。

关键词: 黑龙江永新金矿, 定量及定位评价, 蚀变带及矿体厚度, 远景预测

Abstract:

The Yongxin gold deposit,which was recently discovered in the Nenjiang-Heihe mélange zone, Heilongjiang Province, is a large fracture controlled alteration type gold deposit in Duobaoshan gold-copper metallogenic belt. The ore minerals are composed mainly of petzite, calaverite, native gold, minor sulfides and minor oxide. According to the linear analyses between the thickness of potassium feldspathization zone, sericitization zone, silicification zone and ore-bodies, the thicknesses of the potassium feldspathization zone and silicification zone are positively correlated with ore body thickness. The thickness relation between sericitization zone and ore body are negative. According to the quantitative assessment and the chart of the horizontal projection of the alteration zones, sericitization, potassium feldspathization and silicification zones occurred respectively in the direction from SE to NW, like a “step”. The thicknesses of the potassium feldspathization zone, sericitization zone and silicification zone have a certain corresponding relationship in each “step”. The source of the ore-forming fluid of the deposit is inferred by the authors at the northwest depth, and good prospecting potential in that direction is suggested.

Key words: Yongxin gold deposit in Heilongjiang Province, quantitative and positioning assessment, thicknesses of the alteration zones and ore body, ore prospecting

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