摘要
牟平-乳山成矿带位于我国著名的胶东金矿矿集区东部,牟平—即墨断裂的东侧,是仅次于招掖成矿带的第二大金矿远景区,该区分布有我国典型的大中型石英脉型金矿床。石英作为该区贯通性脉石矿物,也是金的主要载体之一,对其研究和开发具有重要的理论意义和勘探价值。本文利用热释光剂量仪对区内金青顶、邓格庄、英格庄等14个矿床(点)进行石英热释光分析,通过石英热释光曲线的特征及热释光峰值温度、热释光强度等参数进行分析比较,得出一定的找矿信息。本区石英热释光曲线分成为四种类型,分别是尖锐峰、宽峰、平缓峰和双峰,其中尖锐峰和双峰石英与金成矿密切相关,热释光中温峰、强度较大的石英也有利金的富集。石英热释光曲线峰型及热释光曲线峰值温度和热释光强度填图表明,牟乳金成矿带石英大多生成较早,为金矿含金石英,整个区域指示出良好的找矿前景。
Muping-Rushan gold belt is the second largest gold-ore prospect area which located in the east part of Jiaodong peninsula.There are many typical large-and middle-scale quartz-vein gold deposits in the area.Quartz is the primary gold-bearing mineral.So it has great academic significance and exploration value.This paper has studied the quartz thermoluminescence of the Jinqingding, Denggezhuang,Yinggezhuang and other gold deposits in Muping-Rushan gold belt.According to contrast the characteristics of the thermoluminescence paterns,the peak temperature and the strength of thermoluminescence,we obtain some prospecting information.In this area,the thermoluminescence patterns of quartz can be divided into four types:pointed peak,wide peak,gently peak and double peak.The pointed peak and double peak are closely related to Au mineralization.And the middle temperature peak and larger thermoluminescence strength of quartz are beneficial for gold enrichment. Through the mapping of the quartz thermoluminescence patterns,peak temperature,and the strength of thermoluminescence,it show that the most quartz in Muping-Rushan gold belt have formed earlier,and are gold bearing quartz of the deposits.That also indicates a good prospect for prospecting in the whole area.
出处
《中国矿业》
北大核心
2016年第S2期183-188,共6页
China Mining Magazine
基金
中国地质调查局项目资助(编号:1212011220916)
关键词
牟乳成矿带
石英
热释光
峰值温度
热释光强度
Muping-Rushan gold ore belt
quartz
Thermoluminescence
peak temperature
strength of thermoluminescence
