亲铜和亲铁元素之间的区别是什么?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 07 - t12:51:49z //www.hoelymoley.com/feeds/question/8170 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/8170 4 亲铜和亲铁元素之间的区别是什么? marianess //www.hoelymoley.com/users/5529 2016 - 06 - 12 - t14:16:14z 2023 - 05 - 16 - t15:32:10z < p >,因为它描述(w . m .白色,地球化学):< / p > < blockquote > < p > < em >亲铁元素的亲和力金属液相< / em >和< em >亲铜元素硫化物液相有亲和力。< / em > < / p > < /引用> < p >的区别是什么?它只是似乎是一样的硫化液体必须包含金属。据我所知,亲铁元素是:铁、Co、Ni等亲铜的基于“增大化现实”技术,镁、Sr、英航等。< / p > //www.hoelymoley.com/questions/8170/-/8174 # 8174 4 答案由Gimelist亲铜和亲铁元素之间的区别是什么? Gimelist //www.hoelymoley.com/users/725 2016 - 06 - 12 - t23:38:25z 2023 - 05 - 16 - t15:32:10z < p >首先,一个小更正:铁、Co和倪认为亲铁元素。毫克,Sr和英航是亲石元素。基于“增大化现实”技术是亲气。< / p > < p >这是一个版本的分类,以防你需要它在你的眼前:< a href = " https://i.stack.imgur.com/WG8A1.gif " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/WG8A1.gif " alt = "在这里输入图像描述" / > < / > <一口> < a href = " https://en.wikipedia.org/wiki/Goldschmidt_classification " rel = " nofollow noreferrer " >来源:维基百科文章Goldschmidt分类< / > < /一口> < / p > < blockquote > < p >的区别是什么?它只是似乎是一样的硫化液体必须包含金属。< / p > < /引用> < p >这是有点让人摸不着头脑,因为最亲铁元素金属也亲铜甚至亲石元素。让我们首先定义什么是金属和硫化物液体在地上。李> < / p > < ul > < < p > <强>金属液体< /强>:亲铁元素主要集中在熔化的铁元素。不是任何金属,但专门熔铁。这是真正的熔融金属,大多数原子是中性的,成键金属,没有离子键。 The only place that a liquid like this exists to any significant proportion today is Earth's outer core.

  • Sulfide liquid: Chalcophile elements are concentrated in molten sulfide. In the Earth this will mostly be Fe-rich sulfide, the liquid analogue of pyrrhotite and pentlandite (known as mss in high temperature). Sulfide liquids can also form from crystallizing magmas when the liquid phase becomes saturated and a separate, immiscible sulfide liquid precipitates. This precipitated liquid too is likely to contain iron as well as chalcophile metals. This liquid is dominated by the presence of sulfide as S2-. This is no longer a metallic liquid with neutral atoms. This is a liquid where the bonding character is a combination of ionic (because you got Fe2+, Ni2+ and S2-), metallic and covalent. Sulfide liquids can exist in the core (we do not know), but they exist in the mantle and the crust where they are how you move the chalcophile (and siderophile) elements around. Ore deposits of these elements almost always form from sulfide liquids, or their alteration products.

  • Because of the contrasting bonding properties of the metallic and sulfide liquids, trace elements partition differently to them. For example, Te and Cu will "feel more comfortable" in sulfide liquid, whereas Ir and Au will prefer the liquid Fe metal.

    How does this fit in the bigger picture? The main importance of the siderophile-element category is that there are not enough of them. When you look at how much siderophile elements there are in the solar system, and then compare to how much we have in the crust and mantle, there are not enough. This is especially true for the highly siderophile elements (HSE: Au, Re, Ru, Rh, Pd, Os, Ir, Pt). This is unfortunate, because these are very useful metals. We could all use some more Au, Pt and Ir. The accepted explanation is that when the Earth formed, the liquid Fe metal that sunk to the core scavenged the siderophile elements from the surrounding silicate (lithophile-nearing) magma ocean and locked them in the core, far away from us.

    But this occurred a very long time ago, and has little relevance for moving the siderophile elements around in more recent times, and in places closer to us. In the absence of liquid metal, siderophile elements actually behave as chalcophiles or lithophiles. Ore deposits of HSE and particularly the platinum group elements (Ru, Rh, Pd, Os, Ir, Pt) occur in sulfides. Iron, the namesake of the siderophiles, commonly occurs as oxide minerals or as a component of mafic silicates, giving it a lithophile character.

    Baidu
    map