摘要
黄铁矿为大庆岭金矿床中主要的载金矿物。黄铁矿中微量元素的含量反映了矿床成因的多元性及成矿物质的多源性。Ba的高含量表明矿床为浅成热液金矿床。黄铁矿S/Fe值与含金性的相关变化关系说明了富金黄铁矿是在高硫逸度的条件下形成的。黄铁矿的晶形、热电导型及As含量沿矿体走向方向的变化,均表明本矿床剥蚀深度不大,且具东低西高的趋势。含金黄铁矿以其{hko}、{111}及聚形晶含量较高、粒度较细、Pb,Zh含量高、晶胞参数大、以及热电系数均值大和极差小为特征。由黄铁矿的电子顺磁共振谱研究可知,本矿床黄铁矿中的金有一部分是呈品格金的形式存在的。
Pyrite is one of the main gold-carrier minerals in Daqingling gold deposit, The trace elements of the pyrites reflect the poly-genesis of the deposit, The deposit is formed in a shallow position based on the contents of Ba and Sr in pyrites. The relationship between the value of S/Fe of pyrites and gold-bearing property indicates gold-bearing pyrites are formed on the condition of high fS_2. The changes of crystal habits,thermoelectricity types and As contents of pyrites on the strike direction and vertical direction indicate the small erosion of the ore body and less erosion in the western part than in the eastern part. There are many differences between gold-bearing and gold-unbearing pyrites, The conclusion that a part of golds in pyrites occur in the form of lattice gold are made through a study of EPR speetum of pyrites.
关键词
金矿床
黄铁矿
矿床成因
物矿学
gold deposit
pyrite
metallogenesis
Guangxi/Genetic mineralogy prospecting mineralogy
