坦桑尼亚维多利亚湖Maheiga金矿勘查区成矿地质特征及矿床成因  

Metallogenic geological characteristics and genesis of Maheiga gold exploration mine in the Victoria Lake, Tanania

作　　者：张雷[1] 贾晓东[1] 陈丽娜[1] 杜学良[1] 

机构地区：[1]河南省地质矿产勘查开发局第二地质队,河南郑州450001

出　　处：《资源导刊（地球科技版）》2012年第3期19-21,共3页

基　　金：中央地勘风险基金项目：坦桑尼亚维多利亚湖金矿勘查

摘　　要：通过综合研究坦桑尼亚条带状含铁建造金矿床区域成矿地质背景及矿床地质特征，运用地、物、化等综合方法找矿，应用层控说，构造控矿等成矿理论，总结了该类金矿主要控矿因素，着重研究了金矿床在多期变质作用中的演变及富集条件。认为后期构造叠加是富集成矿的首要的关键性控矿因素。认为矿床为火山喷气－沉积－变质矿床成因类型。构造叠加改造的矿源层是最有利的成矿部位和最佳找矿地区。并归纳了找矿标志，意在推动本区金矿找矿突破。Through the comprehensive research of metallogenic geological background and geological characteristic of gold mine banded iron formation in Tanania, and using geography, physics and chemistry methods and metallogenic theories such as application layer control theory and structural ore-controlling theory, we summarize the main ore-controlling factors of this gold mine and do the research which emphasis on the gold mine＇ s evolution and enrichment conditions in the action of multi metamorphism. We regard that later stage superimposition-reformation is the primary critical metallogenic ore-controlling factor. We also regard that the type of this mineral deposit is volcanic exhalative-sedimentary-metamorphic deposit, and the mineral source layer which through structure superimposition-reformation action is the best metallogenic position and ore-forming region. The prospecting criteria for the purpose of accelerating the gold prospecting breakthrough in this area is summarized here.

关 键 词：条带状含铁建造 坦桑绿岩带 成矿地质背景 矿床地质特征 火山喷气沉积 叠加改造 金矿床 

分 类 号：P619.285[天文地球—矿床学]