Partitioning of Ba, La, Yb and Y between haplogranitic melts and aqueous solutions: An experimental study

Borchert, Manuela; Wilke, Max; Schmidt, Christian; Cauzid, Jean; Tucoulou, R.

doi:10.1016/j.chemgeo.2010.06.009

Cited by 43 publications

(42 citation statements)

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“…Borchert et al (2009) determined concentrations of Rb and Sr in aqueous fluids coexisting with haplogranite melts under HTHP conditions, and they also analyzed quenched glasses to calculate the partition coefficients between them. Borchert et al (2010b) determined concentrations of Ba, La, Yb, and Y in aqueous fluids, employing similar methods but with higher excitation energy. In this study, we conducted in situ experiments using experimental procedures similar to those by Bureau et al (2007) at Synchrotron SOLEIL, France.…”

Section: Introductionmentioning

confidence: 99%

Large-ion lithophile elements delivered by saline fluids to the sub-arc mantle

et al. 2014

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Geochemical signatures of arc basalts can be explained by addition of aqueous fluids, melts, and/or supercritical fluids from the subducting slab to the sub-arc mantle. Partitioning of large-ion lithophile elements between aqueous fluids and melts is crucial as these two liquid phases are present in the sub-arc pressure-temperature conditions. Using a micro-focused synchrotron X-ray beam, in situ X-ray fluorescence (XRF) spectra were obtained from aqueous fluids and haplogranite or jadeite melts at 0.3 to 1.3 GPa and 730°C to 830°C under varied concentrations of (Na, K)Cl (0 to 25 wt.%). Partition coefficients between the aqueous fluids and melts were calculated for Pb, Rb, and Sr (D values were greater than unity, which is indicative of the capacity of such highly saline fluids to effectively transfer Pb and Rb. Enrichment of large-ion lithophile elements such as Pb and Rb in arc basalts relative to mid-oceanic ridge basalts (MORB) has been attributed to mantle source fertilization by aqueous fluids from dehydrating oceanic plates. Such aqueous fluids are likely to contain Cl, although the amount remains to be quantified.

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Section: Introductionmentioning

confidence: 99%

Large-ion lithophile elements delivered by saline fluids to the sub-arc mantle

et al. 2014

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“…This corresponds to the experimental result that the presence of NaCl suppresses the solubility of HFSE in aqueous fluids (Tsay et al, 2017). This feature is in contrast to more LILE dissolved in saline fluids than Clfree fluids (Keppler, 1996;Borchert et al, 2009Borchert et al, , 2010aBorchert et al, , 2010bKawamoto et al, 2014).…”

Section: Trace Elements Concentrations Of Fluid Inclusionmentioning

confidence: 77%

Chemical composition of fluid inclusions in the Yorii jadeite–quartz rocks from the Kanto Mountains, Japan

Fukuyama

Kawamoto

Ogasawara

2017

Journal of Mineralogical and Petrological Sciences

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Jadeite-quartz rocks from the Yorii area, the Kanto Mountains, central Japan occur as tectonic blocks within serpentinite mélange. Primary two-phase (liquid + vapor) aqueous fluid inclusions are observed in jadeite, quartz, albite and zircon. The fluids trapped in jadeite and quartz are H 2 O with and without CH 4 and show a wide range of salinity (4.7 ± 1.1 wt% NaCl eqv in jadeite; 3.4 ± 0.7 and 13.6 ± 2.0 wt% NaCl eqv in quartz). In this study, we examined the chemical composition of fluid inclusions in quartz from jadeite-quartz rock to understand the characteristics of fluid, which related to the formation of the rocks in the subduction zone. The trace element concentrations of fluid inclusions determined with LA-ICP-MS are enriched in LILE, Li, B, HFSE and transition metals with LILE enriched and relatively HFSE depleted characteristics. These have elemental patterns similar to the HFSE-depleted fluid released from antigorite during subduction, though the orders of magnitude are different. It can be common chemical characteristics of fluid in a subduction zone. There are two possibilities of the chemical composition of the evolved fluid after the formation of jadeite-quartz rocks. HFSE from the fluid can be sequestered into jadeite-quartz rock prior to fluids moving up into a mantle wedge. This process lead the evolved fluids relatively depleted in HFSE and enriched in LILE. Other possibility is that the fluid has same chemical composition of fluid inclusion as the fluid is equilibrated with jadeite-quartz rocks during the jadeite-quartz formation. In both cases, fluid after the metasomatic formation of jadeite-quartz rocks can be relatively enriched in LILE and depleted in HFSE. Magmas generated in subduction zones exhibit distinctive geochemical features of LILE enrichment and HFSE depletion and this characteristic of arc magma can be explained by the behavior of HFSE during the formation of jadeite-quartz rocks.

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“…It is also generally accepted that elements such as Rb, Cs, Ba, Pb, Sr and Eu are mobile elements, which may easily migrate under hydrothermal conditions. Experimental studies have revealed that Ba is apt to incorporate into the melt phase when the fluid phase contains Cl (Borchert, Wilke, Schmidt, Cauzid & Tucoulou, ; Bureau et al., ). Sr can also incorporate into the melt phase when alkalinity increases (Borchert, Wilke, Schmidt & Rickers, ).…”

Section: Discussionmentioning

confidence: 99%

“…Sr can also incorporate into the melt phase when alkalinity increases (Borchert, Wilke, Schmidt & Rickers, ). In contrast, Rb and B are more easily able to partition into the fluid phase rather than the granitic melt (Adam, Green, Sie & Ryan, ; Bai & van Groos, ; Hervig et al., ), but La and Ce are prone to partition into the melt phase under the same conditions (Bai & van Groos, ; Borchert et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…The contents of some trace elements are very low and below the detection limit, but a selected number of trace elements such as Li, Sc, Cr, Zn, Ga, Rb, Sr, Pb, Ba, Eu, La, Ce and Cs were analysed in the K-feldspars; Rb, Sr and Ba show obviously higher contents than the other trace elements. Cauzid & Tucoulou, 2010;Bureau et al, 2003). Sr can also incorporate into the melt phase when alkalinity increases (Borchert, Wilke, Schmidt & Rickers, 2010).…”

Section: Major and Trace Elementsmentioning

confidence: 99%

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In‐situ analysis of trace elements and Sr–Pb isotopes of K‐feldspars from Tongshankou Cu–Mo deposit, SE Hubei Province, China: Insights into early potassic alteration of the porphyry mineralization system

Jiang

2017

Terra Nova

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In the Tongshankou porphyry deposit (SE Hubei Province, South China), three types of K‐feldspars are recognized: (I) the phenocryst type in the porphyry that crystalized during the magmatic stage, (II) the megacryst type and (III) the vein type in the altered porphyry and orebody that was produced by hydrothermal fluids. A detailed in‐situ analysis of trace elements and Sr–Pb isotopes was carried out on K‐feldspars in an attempt to unravel their formation processes and to trace the element sources during potassic alteration. The Type III K‐feldspars show lower Sr contents and Sr‐isotope ratios but higher Pb contents and Pb‐isotope ratios than the Type I and II K‐feldspars, possibly reflecting a contribution from the country carbonate rocks with less radiogenic Sr but more radiogenic Pb sources, and indicate that the ore‐forming fluids and materials may have been partially derived from external sources such as the host sedimentary rocks during the early potassic alteration stage.

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Partitioning of Ba, La, Yb and Y between haplogranitic melts and aqueous solutions: An experimental study

Cited by 43 publications

References 50 publications

Large-ion lithophile elements delivered by saline fluids to the sub-arc mantle

Large-ion lithophile elements delivered by saline fluids to the sub-arc mantle

Chemical composition of fluid inclusions in the Yorii jadeite–quartz rocks from the Kanto Mountains, Japan

In‐situ analysis of trace elements and Sr–Pb isotopes of K‐feldspars from Tongshankou Cu–Mo deposit, SE Hubei Province, China: Insights into early potassic alteration of the porphyry mineralization system

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