1. Department of Earth and Environmental Sciences; University of Illinois at Chicago; Chicago Illinois USA
2. Physics Division; Argonne National Laboratory; Argonne Illinois USA
3. Physics Department; Northwestern University; Evanston Illinois USA
4. Institute of Physics, University of Bern; Bern Switzerland
5. Department of Geology; State University of New York at Buffalo; Buffalo New York USA
6. Chemistry Division; Argonne National Laboratory; Argonne Illinois USA
7. Egyptian Geological Survey and Mining Authority; Cairo Egypt
8. Department of Geology; Ain Shams University; Cairo Egypt