| 胶东焦家特大型金矿床深、浅部矿体特征对比 |
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| 引用本文：宋明春,宋英昕,崔书学,姜洪利,袁文花,王化江.2011.Characteristic comparison between shallow and deep-seated gold ore bodies in Jiaojia superlarge gold deposit, northwestern Shandong peninsula[J].Mineral Deposits,30(5):923~932 |
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| 基金项目:本文得到山东省地质矿产勘查开发局科研和勘查项目资助 |
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| 中文摘要: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。 |
| 中文关键词: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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| Characteristic comparison between shallow and deep-seated gold ore bodies in Jiaojia superlarge gold deposit, northwestern Shandong peninsula |
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| Abstract:The Jiaojia superlarge gold ore district in Laizhou City is composed of Jiaojia gold deposit, Matang gold deposit, Sizhuang gold deposit, Sizhuang deep-seated gold deposit, Matang deep-seated gold deposit and Jiaojia deep-seated gold deposit. The total reserves of gold resources are higher than 600 t. The ore district consists of 4 ore body groups. There are 306 deep-seated ore bodies. Ⅰ-1, Ⅱ-1 and Ⅰ-12 deep-seated main ore bodies are parallel to and superimposed upon each other in horizontal projection. Ⅰ-12, Ⅰdeep-seated main ore bodies and Ⅰ, 1 shallow main ore bodies are connected to form a large ore body. Compared with shallow ore bodies, deep-seated ore bodies are larger in size, simple in shape and low in dip angle. From shallow to deep levels, gold grade and Au/Ag ratio tend to become lower, and gold minerals tend to become simple in shape, fine in size, increasing in gold content, decreasing in silver content and obviously higher in fineness of gold. The variation of characteristics from shallow to deep-seated gold ore bodies is controlled by variation of structure, fluids, interspace and ore-forming physicochemical conditions. |
| keywords:geology, superlarge gold deposit, deep-seated gold deposit, characteristic comparison between shallow and deep-seated gold ore bodies, Jiaojia of Laizhou City |
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