Crystal-Chemical Peculiarities of Italian Melanites as Pointed out by XAS at the Al K Edge A. Marcelli, A. Mottana, G. Giuli, F. Scordari et Z.Y. Wu J. Phys. IV France, 7 C2 (1997) C2-501-C2-502 DOI: 10.1051/jp4/1997069