Main CIF donators :
International Union of Crystallography permits systematic downloads of coordinates files published in the IUCr journals; COD is updating its coordinate archive and the database from the IUCr web site on a regular basis. More than 20000 CIF files are downloaded at the moment.
The American Mineralogist Crystal Structure Database
The main source of COD mineral data.
and 
March 2003 and later, ~7000 CIFs
Laboratoire de Cristallochimie et
Physicochimie du Solide - CNRS UMR 8012 - Lille - France
> 100 CIFs
April 2003, >1200 CIFs
March 2003, > 850 CIFs
March 2003, > 450 CIFs
Advice to potential donators
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