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矿床地质  2005 

银和金的选择吸附实验研究及意义

Keywords: 地球化学,吸附作用,纳米胶体溶液,,,实验研究

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Abstract:

吸附作用被认为是低温表生矿床的一种重要的成矿机制。文章内多种矿物对银和金的吸附实验表明,呈纳米粒级的银和金的单质对自然界矿物的吸附有明显的选择性,尤其是银对方铅矿和金对黄铁矿的强选择吸附,与自然界的实际情况符合得很好。这一实验结果为解释许多矿床中方铅矿常作为银的载体矿物及黄铁矿常作为金的载体矿物提供了科学依据。实验还证明了粘土、有机质和黑色页岩对银和金的吸附作用。

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