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Incompatible element
About: Incompatible element is a research topic. Over the lifetime, 2420 publications have been published within this topic receiving 154052 citations.
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TL;DR: In this article, the authors describe ~190 Ma S-type granitoids outcropped in the Nyainqentanglha Range, South Tibet, focusing on their petrogenesis and their relationship with contemporaneous magmatism.
6 citations
TL;DR: In this paper, the authors showed that the composition of Fe-Ti oxides in the Eastern Gabbro of the alkaline Coldwell Complex, Canada, represents a Ni-poor conduit-type system that comprises two rock series, the Layered Series and Marathon Series, which intruded into a metabasalt package.
Abstract: The Eastern Gabbro of the alkaline Coldwell Complex, Canada, represents a Ni-poor conduit-type system that comprises two rock series, the Layered Series and Marathon Series, which intruded into a metabasalt package Based on distinct variations in magnetite compatible (eg, Ni, Cr) and incompatible (eg, Sn, Nb) elements in Fe–Ti oxide intergrowths, the metabasalts, Layered Series, and Marathon Series must have crystallized from magmas that originated from compositionally distinct sources Of these rock units, the metabasalts crystallized from a more primitive melt than the Layered Series as Fe–Ti oxides in the former have higher concentrations of magnetite-compatible elements Unlike the metabasalts and Layered Series, the Marathon Series crystallized from multiple, compositionally distinct magmas as Fe–Ti oxides in this series exhibit large variations in both magnetite compatible and incompatible elements Accordingly, the various rock types of the Marathon Series cannot be related by fractional crystallization of a single batch of magma Rather, the magmas from which the rock types crystallized had to have interacted to variable degrees with a late input of more primitive melt The degree of this magma interaction was likely controlled by the geometry of the conduit and the location of emplacement given that Fe–Ti oxides in the oxide-rich rocks occur in pod-like bodies and exhibit no compositional evidence for magma mixing Mirrored variations in magnetite compatible and incompatible elements in Fe–Ti oxides in the Footwall Zone, Main Zone, and W Horizon of the Marathon Cu–PGE deposit indicate that these zones could not have formed from a single, evolving magma, but rather multiple batches of compositionally distinct magmas Fe–Ti oxides exhibit no compositional difference between those hosted by barren and mineralized rock This is likely because sulfide liquated at depth in all of the magmas from which the Marathon Series crystallized The composition of Fe–Ti oxides in the Eastern Gabbro fall outside of the compositional fields for Ni–Cu mineralization defined by Dupuis and Beaudoin (Mineral Deposita 46:319–335, 2011) and Ward et al (J Geochem Explor 188:172–184, 2018) demonstrating that their discrimination diagrams can distinguish between Ni-rich and Ni-poor systems that contain disseminated and massive sulfides
6 citations
Journal Article•
TL;DR: The geologic features and geochemical characteristics of the Jijiaogou intrusive complex in the east of the north slope of the Danghenanshan were summed up and it was found that it is a caledonian neutral-acidic plutonic complex with the four phase of magmatic activities as discussed by the authors.
Abstract: The geologic features and geochemical characteristics of the Jijiaogou intrusive complex in the east of the north slope of the Danghenanshan were summed up and it was found that it is a caledonian neutral-acidic plutonic complex with the four phase of magmatic activities The first phase is the apophysis-shaped pyroxene diorite and pyroxene syenite diorite, the second is the stock-shaped quartz monzonite, the third is the apophysis- shaped biotite monzogranite and the fourth is the vein-shaped fine-grained monzogranite The first and second phases(quartz monzonite with the zircon U-Pb age of 4553±56 Ma) constitute the main part of the complex In general, all rocks are rich in alkali(with an averaged alkalinity rate of 272%), high potassium(the averaged value is 424%) and poor in titanium(less than 13%), and subjected to the shoshonitic series The rocks are also rich in the large ion lithophile elements and light rare earth elements, with negative Eu anomalies Furthermore, the content of the aluminum and potassium are gradually increasing but the rare earth elements decreasing in the rocks from the first phase to the fourth, and the rock geochemical characteristics are similar between the first two and the last two phases In detail, the rocks of the last two phases are less light rare earth elements and incompatible elements(the fourth is less than the third) The degree of magma evolution increases gradually, especially the last two magmatic evolution degree is very high(with the averaged DI of 959) The first two phase rocks originated from the partial melting of mafic rocks in the island arc settings, and the last two phase rocks originated from the metamorphosed sediments in the orogenic belts
6 citations
TL;DR: In this article, the plotting of Ti, P, Sr, Y and Zr against MgO yields linear relationships in the case of the layered Elephant's Head intrusion, and the calculated regression lines converge on the Mg O values characteristic of the cumulus olivine.
6 citations
TL;DR: In this paper, the authors present that the muscovite alkali-feldspar granites, as the parental rocks to the tungsten mineralization in the Nanling Range (South China), may result from extremely fractionated granitic magma from the deep-seated magma chamber.
6 citations