2005
DOI: 10.1016/j.gca.2005.04.020
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Tellurium isotopic composition of the early solar system—A search for effects resulting from stellar nucleosynthesis, 126Sn decay, and mass-independent fractionation

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Cited by 34 publications
(45 citation statements)
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References 87 publications
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“…This implies that sulfides, which are thought to be the main carrier of Te, could also be an important host phase for Sn in carbonaceous chondrites. Such a conclusion stands in contrast to the occurrence of Sn in iron meteorites and ordinary chondrites, where it is mainly present in the metal phase (Shima, 1964;Mason and Graham, 1970;Fehr et al, 2005). However, as the carbonaceous chondrites analyzed in this study contain less than 0.5% metal, Sn may display the same chalcophile affinity that has been documented for its occurrence in the Earth's crust, where it is often enriched in sulfides (Yi et al, 1995).…”
Section: Distribution Of Sn and Te In The Leachates-implications For contrasting
confidence: 79%
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“…This implies that sulfides, which are thought to be the main carrier of Te, could also be an important host phase for Sn in carbonaceous chondrites. Such a conclusion stands in contrast to the occurrence of Sn in iron meteorites and ordinary chondrites, where it is mainly present in the metal phase (Shima, 1964;Mason and Graham, 1970;Fehr et al, 2005). However, as the carbonaceous chondrites analyzed in this study contain less than 0.5% metal, Sn may display the same chalcophile affinity that has been documented for its occurrence in the Earth's crust, where it is often enriched in sulfides (Yi et al, 1995).…”
Section: Distribution Of Sn and Te In The Leachates-implications For contrasting
confidence: 79%
“…3d), the slope indicates an initial 126 Sn/ 124 Sn of <7.7 · 10 À5 at the time of closure of the Sn-Te system in the carrier phases. Based on results obtained for bulk carbonaceous chondrites, Fehr et al (2005) deduced an initial solar system 126 Sn/ 124 Sn ratio of <18 · 10 À5 , which overlaps with the more restrictive values calculated from the new data. Please note that the initial abundance of 126 Sn was reported as 126 Sn/ 118 Sn in Fehr et al (2005).…”
Section: Variations In 126 Te/ 128 Te and The Initial 126 Sn/ 124 Sn supporting
confidence: 77%
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“…We propose that the Te isotopic anomalies in 2 bulk CAIs from Allende (Fehr et al 2009) and in leachates of Allende, Murchison, and Orgueil (Fehr et al 2006) may be explained by mass-independent effects resulting from either metamorphic processes on the meteorite parent body or, (Fehr et al 2006) normalized to 130 Te/ 126 Te = 1.81684 (Fehr et al 2005), which is the value of the unprocessed Te standard solution. The calculated symbols correspond to the fit of the measured data by the nuclear field shift theory using Equation 2.…”
Section: Discussionmentioning
confidence: 98%
“…As mentioned earlier, planetary-scale, stable isotope anomalies are found in meteorites for various elements (e.g., Cr, Ti, Mo, Ru, and Ba), including Sr, whereas isotope homogeneity can be observed for some selected elements (e.g., Cd, Te, Hf, and Os). Interestingly, the elements that exhibit isotope anomalies are moderately refractory elements with 50% condensation temperatures ranging from ∼1300 to ∼1600 K (Lodders, 2003), whereas moderately volatile elements (Cd and Te: Fehr et al, 2005;Wombacher et al, 2008) and ultrarefractory elements (Hf and Os: Sprung et al, 2010;Yokoyama et al, 2010) show no isotope anomalies, except for one ultrarefractory element, Zr (Akram et al, 2013). Further investigation with more precise and accurate isotope data for the elements in bulk meteorites with a wide range of condensation temperatures would provide clues for understanding the dynamic evolution of the dust grains and subsequent planetary formation in the early solar system.…”
Section: As Shown Inmentioning
confidence: 99%