La-Ba geochronometer has been applied for the first time to bastnaesite. The formation age of 586.8 Ma for bastnaesites from Gakara, Burundi, has been determined with the high precision of ±3.7 Ma. It has been found that the retention of radiogenic 138Ba produced from 138La can be perfect in bastnaesite.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.