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Chromite and Platinum-group Elements Coprecipitation by Crustal Contamination or Magma Mixing Revisited - Genetic and Exploration Implications

机译：铬铁矿和铂族群元素通过地壳污染或岩浆混合重新审查 - 遗传和勘探影响

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Traditional models employed to genetically link associated chromite and platinum-group elements have favoured crustal contamination as the primary process for inducing sulfide and oxide saturation. The association of chromite ores with crustal contamination is well established in the literature. However, in the 1970s (cf Irvine, 1973,1975), Irvine demonstrated that crustal contamination was in fact problematic as a tool for inducing chromite precipitation in mafic to ultramafic magmas. His results are re-examined here, along with some attempts to reconcile them with the effects of adding Fe to the models. It is concluded that crustal contamination is indeed problematic based on phase relationships alone. However, the role of fluids as a compensating agent is evaluated, which may explain why crustal contamination may indeed facilitate oxide and sulfide precipitation.

机译：用于基因链接相关铬铁矿和铂族组分的传统模型使地壳污染成为诱导硫化物和氧化物饱和的主要方法。铬铁矿矿石与地壳污染的结合在文献中得到了很好的成熟。然而，在20世纪70年代（CF Irvine，1973,1975）中，Irvine证明了地壳污染实际上是一种诱导乳头沉淀到超微岩浆岩浆中的铬铁矿沉淀的工具。他的结果在这里重新检查，以及一些尝试将它们与模型添加FE的效果调和它们。结论是基于单独的相位关系，地壳污染确实有问题。然而，评估流体作为补偿剂的作用，这可以解释为什么地壳污染确实有促进氧化物和硫化物沉淀。

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《PACRIM Congress》|2015年||共6页
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S A Prevec;
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1. Platinum-group element contents of chromites from mafic-ultramafic layered flows, Abitibi greenstone belt, Ontario: implications for geochemical fractionation and mineral exploration [J] . W. E. Stone, J. H. Crocket Mineralogy and Petrology . 2003,第1a2期

机译：来自安大略省阿比提比绿岩带的镁铁质-超镁铁质分层流中铬铁矿的铂族元素含量：对地球化学分馏和矿物勘探的影响
2. Sr-Nd-Pb-O isotopic evidence for decreasing crustal contamination with ongoing magma evolution at Alicudi volcano (Aeolian arc,Italy):implications for style of magma-crust interaction and for mantle source compositions [J] . Angelo Peccerillo, Luigi Dallai, Maria Luce Frezzotti, Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry . 2004,第1a2期

机译：Sr-Nd-Pb-O同位素证据表明，随着阿利库迪火山（意大利风沙弧）的不断岩浆演化，降低了地壳污染：对岩浆-地壳相互作用方式和地幔源成分的暗示
3. Magma Ascent along a Major Terrane Boundary: Crustal Contamination and Magma Mixing at the Drumadoon Intrusive Complex, Isle of Arran, Scotland [J] . F. C. Meade12* D. M. Chew13 V. R. Troll14 R. M. Ellam5 and L. M. Page6 Journal of Petrology . 2009,第12期

机译：沿主要地形边界的岩浆上升：苏格兰阿兰岛Drumadoon侵入综合体的地壳污染和岩浆混合
4. Chromite and Platinum-group Elements Coprecipitation by Crustal Contamination or Magma Mixing Revisited - Genetic and Exploration Implications [C] . S A Prevec PACRIM Congress . 2015

机译：铬铁矿和铂族群元素通过地壳污染或岩浆混合重新审查 - 遗传和勘探影响
5. Experimental constraints on the chromite-melt partitioning behaviour of rhenium and platinum-group elements. [D] . Sattari, Parisa. 2000

机译：constraints和铂族元素铬铁矿熔体分配行为的实验约束。
6. Evidence from meimechites and other low-degree mantle melts for redox controls on mantle-crust fractionation of platinum-group elements [O] . James E. Mungall, Jacob J. Hanley, Nicholas T. Arndt, 2006

机译：蓝云母和其他低度地幔熔体的氧化还原控制铂族元素地幔壳分馏的证据
7. Magma Ascent along a Major Terrane Boundary: Crustal Contamination and Magma Mixing at the Drumadoon Intrusive Complex, Isle of Arran, Scotland [O] . Meade, F. C., Chew, D. M., Troll, V. R., 2017

机译：沿主要地形边界的岩浆上升：苏格兰阿兰岛Drumadoon侵入综合体的地壳污染和岩浆混合

Chromite and Platinum-group Elements Coprecipitation by Crustal Contamination or Magma Mixing Revisited - Genetic and Exploration Implications

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