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Vol 227
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Geochemistry of spinels from xenoliths of mantle lherzolites (sverre Volcano, spitsbergen Archipelago)

D. S. Ashikhmin1
Yu.-S. Chen2
S. G. Skublov3
A. E. Melnik4
About authors
  • 1 — A.P.Karpinsky Russian Geological Research Institute
  • 2 — School of Earth and Space Sciences of University of Science and Technology of China
  • 3 — Institute of Precambrian Geology and Geochronology Russian Academy of Sciences
  • 4 — Institute of Precambrian Geology and Geochronology Russian Academy of Sciences
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The paper presents the results of a study (LA-ICP-MS method) of spinel from the collection of mantle xenoliths of lherzolites (seven xenoliths) selected in quaternary alkaline basalts of the Sverre volcano, the Spitsbergen archipelago. The study of two large (more than 15 cm in diameter) xenoliths made it possible to study changes in the composition of minerals in the central, intermediate, and marginal parts of the samples of chromium diopside spinel lherzolites. The sinusoidal character of the REE distribution in spinels, which indicates the manifestation of mantle metasomatism, is established. The results obtained for the first time on the trace-element composition for spinels from mantle xenoliths in alkaline basalts of the Spitsbergen archipelago are supplemented by data on the geochemistry of spinels of mantle origin published in the world literature.

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  1. Геохимия акцессорных хромшпинелидов из пород Эргаского хромитоносного гипербазитового массива и условия его формирования (Западный Саян) / Ф.П.Леснов, М.Ю.Подлипский, Г.В.Поляков, Г.В.Палесский // Доклады АН. 2008. Т. 422. № 5. С. 660-664.
  2. Леснов Ф.П. Редкоземельные элементы в ультрамафитовых и мафитовых породах и минералах. Кн. 2. Второстепен-ные и акцессорные минералы. Новосибирск: Академическое изд-во «Гео», 2009. 190 с.
  3. Carbonate-bearing mantle peridotite xenoliths from Spitsbergen: phase relationships, mineral compositions and trace-element residence / D.A.Ionov, S.Y.O'Reilli, Y.S.Genshaft, M.G.Kopylova // Contributions to Mineralogy and Petrology. 1997. Vol. 125. P. 375-392.
  4. Continental and oceanic crust recycling-induced melt-peridotite interactions in the Trans-North China Orogen: U-Pb dating, Hf isotopes and trace elements in zircons from mantle xenoliths / Y.S.Liu, S.Gao, Z.Hu et al. // Journal of Petrology. 2010. Vol. 51. P. 537-571.
  5. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard / Y.S.Liu, Z.Hu, S.Gao et al. // Chemical Geology. 2008. Vol. 257. P. 34-43.
  6. Kamenetsky V.S. Factors controlling chemistry of magmatic spinel: an empirical study of associated olivine, Cr-spinel and melt inclusions from primitive rocks / V.S.Kamenetsky, A.J.Crawford, S.Meffre // Journal of Petrology. 2001. Vol. 42. P. 655-671.
  7. Mechanisms and sources of mantle metasomatism: major and trace element compositions of peridotite xenoliths from Spits-bergen in the context of numerical modeling / D.A.Ionov, J.-L.Bodinier, S.B.Mukasa, A.Zanetti // Journal of Petrology. 2002. Vol. 43. P. 2219-2259.
  8. Metasomatic processes in lherzolitic and harzburgitic domains of diamondiferous lithospheric mantle: REE in garnets from xenoliths and inclusions in diamonds / T.Stachel, K.S.Viljoen, G.Breya, J.W.Harris // Earth and Planetary Science Letters. 1998. Vol. 159. P. 1-12.

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