Pink Angel: argon and xenon diffusion, I-Xe chronology, and the ^(36)Cl problem

Abstract

The reported presence in Allende Pink Angel sodalite of excess ^(36)S [1] attributed to ^(36)Cl decay is at odds with the apparent absence of a corresponding excess of ^(36)Ar, which is the major decay product of ^(36)Cl. In an attempt to throw light on the problem we have reviewed new and existing data on the diffusion of Ar and Xe in sodalite, carried out new high resolution I-Xe analyses of Pink Angel, and devised a new methodology for searching for small excesses of ^(36)Ar from ^(36)Cl decay.

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