Dear Dr. VITALI,

There's not a lot on corrensite that I can find.  

Two references are:

Blount, A. M., Williams, D., Jenkins, J. and Warner, B. (1983) Expandable
layer silicates associated with hydrothermal talc deposits of Murphy, North
Carolina. Economic Geology and the Bulletin of the Society of Economic
Geologists 78, 486-497.
Richter, D. K. (1985) Die Dolomite der Evaporit- und der
Dolcrete-Playasequenz im mittleren Keuper bei Coburg (NE-Bayern). Neues
Jahrbuch fuer Geologie und Palaeontologie. Abhandlungen. 170, 87-128.

If you want fractionation factors, try

Savin, S. M. and Lee, M. (1988) Isotopic studies of phyllosilicates. Bailey,
Sturges Williams. Hydrous phyllosilicates 19, 189-223.

Amities,

Zach
Zachary Sharp
Institute of Mineralogy
University of Lausanne, BFSH-2
CH-1015 Lausanne
Switzerland