Showing a limited preview of this publication:
Abstract
Direct structural characterization of the changes in the local environment of Mg occurring in the garnet structure as a function of the Ca content are determined by Mg K-edge X-ray absorption fine structure on synthetic samples along the pyrope-grossular join. With increasing Ca content, the short Mg-O2 distance of the dodecahedron slightly decreases, while the long Mg-O4 distance tends to increase, so that the dodecahedron is more distorted in grossular-rich garnets than in end-member pyrope. This quantitative direct description of the changes in the local environment of Mg in the pyrope-grossular solid solution confirms and better defines previous experimental and recent computational results.
Received: 2007-10-22
Accepted: 2007-10-30
Published Online: 2015-4-1
Published in Print: 2008-2-1
© 2015 by Walter de Gruyter Berlin/Boston
