>Below is the only ICSD structural data available for C4A3S. The
>reference is : Saalfeld H, Depmeier W
> Kristall und Technik, Vol 7, No. 229
Actually there are a couple more in ICSD (http://barns.ill.fr/dif/icsd/)
including a more recent one done with Rietveld refinement :-)
Saalfeld,H. Depmeier,W. (1972) Krist.Tech. 7 229-233
Silicon-Free Compounds with Sodalite Structure
Kondo,R. (1965) Journal of the Ceramic Association of Japan 73 1-8
The Synthesis and Crystallography of a Group of New Compounds Belonging to the
Hauyne Type Structure
Calos,NJ. Kennard,CHL. Whittaker,AK. Davis,RL. (1995) J.Solid State Chem. 119 1-7
Structure of calcium aluminate sulfate Ca4 Al6 O16 S
Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]> tel (33) 4.76.20.72.13
ftp://ftp.ill.fr/pub/dif fax (33) 4.76.48.39.06 http://www.ill.fr/dif/