Extreme 16O Enrichment in Calcium-Aluminum-Rich Inclusions from the Isheyevo (CH/CB) Chondrite Posted on June 26, 2014 by UHNAI Webmaster in Gounelle, M., A. N. Krot, K. Nagashima, A. Kearsley (). Extreme 16O Enrichment in Calcium-Aluminum-Rich Inclusions from the Isheyevo (CH/CB) Chondrite. , 698,