Conference
Geochemical characteristics of a newly discovered Vigarano chondrite fragment (CV3) - Study of redox conditions with unconventional Mössbauer spectroscopy
| العنوان: | Geochemical characteristics of a newly discovered Vigarano chondrite fragment (CV3) - Study of redox conditions with unconventional Mössbauer spectroscopy |
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| المؤلفون: | Permunian G., Tagliacollo L., Bonadiman C., Nodari L., Brombin V., Tassinari R. |
| المساهمون: | Permunian, G., Tagliacollo, L., Bonadiman, C., Nodari, L., Brombin, V., Tassinari, R. |
| بيانات النشر: | Società Geologica Italiana e Società Italiana di Mineralogia e Petrologia ITA |
| سنة النشر: | 2024 |
| المجموعة: | Università degli Studi di Ferrara: CINECA IRIS |
| مصطلحات موضوعية: | Vigarano meteorite, carbonaceous chondrite, Mössbauer spectroscopy |
| الوصف: | The Vigarano meteorite fell in 1910 in the province of Ferrara, Italy, and, after the impact, was divided into two blocks, “Cariani” and “Morandi”, respectively, named after the owners of the farms where they were recovered (Trevisani, 2011 and reference therein). A new series of debris was found in a storehouse near the impact site at the beginning of the XXI century and was classified as part of the Cariani stone (Trevisani, 2011). This meteorite has been widely studied and represents the reference type of the reduced CV3 carbonaceous chondrite group (McSween, 1977). Notwithstanding it is worth noticing that the main contribution to the nature and origin of this meteorite is from fragments of the Morandi block, while knowledge on the other block is scarce. This work aimed to characterize one of these newly discovered fragments to confirm its belonging to the Vigarano meteorite, with both bulk (XRF, and ICP-MS), in-situ (EMPA) major and trace element contents, and C-S elemental and isotopic (EA-IRMS) analyses. EMPA and petrographic thin section analyses did not identify phyllosilicates and carbonates, which were determined in the literature dealing with the Morandi block (McSween, 1977). Therefore, additional Mössbauer spectroscopy analyses were conducted to investigate iron speciation and possibly to determine the formation system’s redox conditions and volatile elements circulation in the planetary body. Both XRF and ICP-MS analyses showed a composition in agreement with the literature data (McSween, 1977; Dauphas & Pourmand, 2015), confirming at first, that the recovered unnamed meteorite fragments belonged to the Vigarano meteorite, even though the fragment had no CAIs evidence, and, for major elements, a higher Mg/Si (1.43 versus 0.94) and Fe/Si (1.59 versus 1.46) and lower Ca/Al rate (0.71 versus 1.09). Slightly differences between the two blocks were also observed for trace element contents: the newly found fragment had a lower Eu (0.09 versus 0.11 ppm), Gd (0.29 versus 0.40 ppm), Dy (0.40 versus ... |
| نوع الوثيقة: | conference object |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | ispartofbook:Geology for a sustainable management of our planet - Abstract Book; Congresso Congiunto SGI-SIMP 2024: Geology for a sustainable management of our planet; firstpage:959; lastpage:959; numberofpages:1; https://hdl.handle.net/11392/2571572 |
| الاتاحة: | https://hdl.handle.net/11392/2571572 |
| رقم الانضمام: | edsbas.40D80AE9 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |