The CAI Database: 26Al–26Mg Isotope Systematics

We present a public database which includes published calcium-aluminum-rich inclusion (CAI) 26Al–26Mg data, designed in a way that researchers in cosmochemistry and astrophysics may find useful. We were inspired by previously compiled CAI datasets (e.g. MacPherson et al. 1995; Davis 2022), other cosmochemistry databases (Stephan et al. 2024), and new measurements implementing recent advances in secondary ion mass spectrometry (SIMS) (Liu et al. 2018). To date, the database contains 497 CAIs from 76 peer-reviewed papers and the CAIs are from all chondrite groups and cover different CAI types, textures, and sizes. The database includes the paper, host meteorite CAI name and type, 26Al/27Al0, δ26Mfg∗0, δ25Mg and their uncertainties, number of regression points, maximum 27Al/24Mg, mean squared weighted deviation (MSWD), CAI size, and CAI descriptions.