Magnetitite Layer (IMAGE) University of the Witwatersrand Caption Photograph of a magnetitite layer from the Bushveld Complex and a chemical contour map showing the distribution of chromium within the layer after analysis with a portable XRF spectrometer. Credit Wits University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.