Previous Article Next Article Table of Contents Science, Vol.284, No.5421, 1788-1789, 1999 DOI10.1126/science.284.5421.1788 Export Citation Mantle geochemistry - A lesson from ceramics Navrotsky A Keywords:SILICATE PEROVSKITE;FERRIC IRON;HYDROGEN;ALUMINA Please enable JavaScript to view the comments powered by Disqus.