Orange-red to yellowish brown cordierite from Madagascar

J.C. Zwaan
National Museum of Natural History
Leiden, The Netherlands

Federico Pezzotta
Natural History Museum of Milan
Milan, Italy

George R. Rossman
California Institute of Technology
Pasadena, California

Abstract

Transparent cordierite of an unusual orange-red to yellowish-brown color from the Gogogogo area of Madagascar was characterized.

Samples of the cordierite over a polarizing sheet arranged in different crystal orientations.