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矿床地质  2011 

胶东焦家特大型金矿床深、浅部矿体特征对比

Keywords: 地质学,特大型金矿床,深部金矿,深、浅部矿体对比,莱州市焦家

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Abstract:

焦家特大型金矿床由以往提交的焦家金矿床、马塘金矿床、寺庄金矿床和近年来发现的寺庄深部金矿床、马塘深部金矿床、焦家深部金矿床组成,金资源储量大于600吨。该矿床由4个矿体群组成,深部矿体有306个。深部Ⅰ-1号、Ⅱ-1号和Ⅰ-12号主矿体相互平行且在水平投影图上部分叠合,深部Ⅰ-12号、Ⅰ号主矿体与浅部Ⅰ号、1号主矿体相互连接为一个矿体。与浅部矿体相比,深部矿体形态简单、规模大、倾角缓。由浅部至深部,矿体的金品位及金、银含量比值呈现相对降低的趋势;金矿物的形态趋于简单,粒度逐渐变细;金矿物中金含量增高,银含量减少,金矿物成色明显增高。深、浅部矿体特征的变化与控矿构造、成矿流体、成矿空间和成矿物理化学条件的变化有关。

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