FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3208678060> ?p ?o ?g. }

• W3208678060 abstract "Experiments were conducted to explore the behavior of Li, Rb, Nb, Sn, Cs, Ta, W during crustal melting and test the anatectic origin of rare metal-bearing peraluminous granites such as rare metal granites (RMGs). The experiments were performed under fluid-absent conditions at 800 and 850 °C, 400 MPa and moderately reducing fO2 (ΔFMQ = − 0.5 to − 0.8). Starting materials were cores of several millimetres drilled from two natural rocks, a biotite-rich paragneiss (Pg) and a muscovite-rich orthogneiss (Og) enriched in Li, Be, Sn, Cs, W. Both protoliths produced small melt fractions from 8 to 20% vol. Melt distributions were either homogeneously distributed at grain boundaries in the Pg or preferentially associated with muscovite reaction zones in the Og. In the Pg at 800 °C, melting is mainly fluid present, driven by interstitial water at grain boundaries. At 850 °C, biotite dehydration-melting produces peritectic orthopyroxene, hercynitic spinel, ilmenite and alkali feldspar in addition to melt. In the Og, muscovite dehydration-melting generates melt plus peritectic biotite, hercynitic spinel, ilmenite, Al silicates and alkali feldspar. Experimental glasses are nearly homogeneous, silica rich, peraluminous and leucogranitic and their major element compositions differ only little between the two protoliths. In contrast, the trace element concentrations vary as a consequence of chemical and textural heterogeneities in our starting materials. Compared with source rocks, the Og glasses are enriched in Rb, Nb, Ta, W and depleted in Li, Cs and the Pg are enriched in Li, Rb, Cs, W and depleted in Nb, Ta. Mass-balance calculations indicate that during muscovite dehydration-melting, Li, Cs and Rb partition into the melt; whereas Nb, Ta and W are preferentially incorporated in peritectic phases. Li and Cs also partition toward the melt during biotite dehydration-melting. The partitioning behavior of trace elements during crustal melting is a function of the melting reaction and partition coefficients between melt, residual and peritectic phases. Experimental glasses are similar to peraluminous muscovite granites but fail to reproduce RMG compositions. Alternatives to mica dehydration-melting such as fluid-present and residual source melting emphasize the difficulties with an origin of RMGs by purely anatectic processes. Crystallization differentiation might have to be combined with mica dehydration-melting to explain the distinctive geochemical features of RMGs." @default.
• W3208678060 created "2021-11-08" @default.
• W3208678060 creator A5007927797 @default.
• W3208678060 creator A5026845301 @default.
• W3208678060 creator A5084655928 @default.
• W3208678060 date "2021-10-29" @default.
• W3208678060 modified "2023-10-13" @default.
• W3208678060 title "Rare elements enrichment in crustal peraluminous magmas: insights from partial melting experiments" @default.
• W3208678060 cites W1623750096 @default.
• W3208678060 cites W1642355932 @default.
• W3208678060 cites W1672405186 @default.
• W3208678060 cites W1699061065 @default.
• W3208678060 cites W1966623185 @default.
• W3208678060 cites W1969414340 @default.
• W3208678060 cites W1971410845 @default.
• W3208678060 cites W1972200033 @default.
• W3208678060 cites W1975534655 @default.
• W3208678060 cites W1977806705 @default.
• W3208678060 cites W1977995112 @default.
• W3208678060 cites W1980255347 @default.
• W3208678060 cites W1993307882 @default.
• W3208678060 cites W1997980916 @default.
• W3208678060 cites W2000769549 @default.
• W3208678060 cites W2002934961 @default.
• W3208678060 cites W2004010500 @default.
• W3208678060 cites W2004935853 @default.
• W3208678060 cites W2011646703 @default.
• W3208678060 cites W2011712151 @default.
• W3208678060 cites W2014745983 @default.
• W3208678060 cites W2016549469 @default.
• W3208678060 cites W2017259955 @default.
• W3208678060 cites W2018558568 @default.
• W3208678060 cites W2021988585 @default.
• W3208678060 cites W2024436619 @default.
• W3208678060 cites W2026096968 @default.
• W3208678060 cites W2026735058 @default.
• W3208678060 cites W2026899000 @default.
• W3208678060 cites W2027615258 @default.
• W3208678060 cites W2027862110 @default.
• W3208678060 cites W2029343011 @default.
• W3208678060 cites W2031531057 @default.
• W3208678060 cites W2033408311 @default.
• W3208678060 cites W2035031922 @default.
• W3208678060 cites W2036707437 @default.
• W3208678060 cites W2040306702 @default.
• W3208678060 cites W2048267754 @default.
• W3208678060 cites W2050926313 @default.
• W3208678060 cites W2051629671 @default.
• W3208678060 cites W2060229600 @default.
• W3208678060 cites W2061061327 @default.
• W3208678060 cites W2068783831 @default.
• W3208678060 cites W2069309542 @default.
• W3208678060 cites W2078926476 @default.
• W3208678060 cites W2080150458 @default.
• W3208678060 cites W2080494759 @default.
• W3208678060 cites W2082031187 @default.
• W3208678060 cites W2082156268 @default.
• W3208678060 cites W2082189189 @default.
• W3208678060 cites W2086984328 @default.
• W3208678060 cites W2088001699 @default.
• W3208678060 cites W2088506630 @default.
• W3208678060 cites W2089030937 @default.
• W3208678060 cites W2096349147 @default.
• W3208678060 cites W2099540110 @default.
• W3208678060 cites W2100499324 @default.
• W3208678060 cites W2103578787 @default.
• W3208678060 cites W2106769845 @default.
• W3208678060 cites W2116657042 @default.
• W3208678060 cites W2122342786 @default.
• W3208678060 cites W2126208830 @default.
• W3208678060 cites W2134849096 @default.
• W3208678060 cites W2135961602 @default.
• W3208678060 cites W2141611216 @default.
• W3208678060 cites W2145059358 @default.
• W3208678060 cites W2148145491 @default.
• W3208678060 cites W2154241237 @default.
• W3208678060 cites W2165976294 @default.
• W3208678060 cites W2313061604 @default.
• W3208678060 cites W2313731717 @default.
• W3208678060 cites W2318064085 @default.
• W3208678060 cites W2318148662 @default.
• W3208678060 cites W2329047353 @default.
• W3208678060 cites W2335459763 @default.
• W3208678060 cites W2341957073 @default.
• W3208678060 cites W2391748212 @default.
• W3208678060 cites W2410470416 @default.
• W3208678060 cites W2413565410 @default.
• W3208678060 cites W2460600588 @default.
• W3208678060 cites W2494585492 @default.
• W3208678060 cites W2498580575 @default.
• W3208678060 cites W2503851182 @default.
• W3208678060 cites W2514466179 @default.
• W3208678060 cites W2588592635 @default.
• W3208678060 cites W2604550604 @default.
• W3208678060 cites W2604771354 @default.
• W3208678060 cites W2734784662 @default.
• W3208678060 cites W2749490971 @default.
• W3208678060 cites W2781592578 @default.
• W3208678060 cites W2792738427 @default.
• W3208678060 cites W2793596774 @default.

• next