Sodium-metasomatism of Ca-Al-rich inclusions in the anomalous carbonaceous chondrite Ningqiang

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Short-lived chlorine-36 in a Ca- and Al-rich inclusion from the Ningqiang carbonaceous chondrite.

Excesses of sulfur-36 in sodalite, a chlorine-rich mineral, in a calcium- and aluminum-rich inclusion from the Ningqiang carbonaceous chondrite linearly correlate with chorine/sulfur ratios, providing direct evidence for the presence of short-lived chlorine-36 (with a half-life of 0.3 million years) in the early solar system. The best inferred (36Cl/35Cl)o ratios of the sodalite are approximate...

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Phosphoran-olivine in Opaque Assemblages of the Ningqiang Carbonaceous Chondrite: Implication to Their Precursors

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Introduction: The refractory Calcium-Aluminumrich Inclusions (CAIs) preserve petrographic and geochemical records of the earliest events that shaped our Solar System. Absolute high-resolution Pb-Pb dating of CAIs has revealed them to be the oldest solids in the Solar System [1-4]. Another useful high-resolution relative dating technique is the Al-Mg short-lived chronometer which has been used e...

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ژورنال

عنوان ژورنال: Journal of Mineralogical and Petrological Sciences

سال: 2009

ISSN: 1345-6296,1349-3825

DOI: 10.2465/jmps.090621a