I measured apatite/fluid partition coefficients for REE and used them to
model REE mobility in the following paper:

Ayers, J.C., and Watson, E.B. (1993) Apatite/fluid partitioning of
rare-earth elements and strontium; experimental results at 1.0 GPa and 1000
degrees C and application to models of fluid-rock interaction. Geochemistry
of accessory minerals; papers presented at the Third V. M. Goldschmidt
conference. Chemical Geology, 110(1-3), 299-314.

Best regards,


Dr. John C. Ayers, Associate Professor
Dept. of Earth and Environmental Sciences
Vanderbilt University
VU Station B #350105
2301 Vanderbilt Pl.
Nashville, TN 37235-0105
Office: (615) 322-2158   Lab: (615) 343-4136
FAX: (615) 322-2138     Home: (615) 376-0931

-----Original Message-----
From: Metamorphic Studies Group [mailto:[log in to unmask]] On
Behalf Of Tomas Magna
Sent: Friday, March 21, 2003 3:31 AM
To: [log in to unmask]
Subject: Re: REE behavior

Hi all,

Just a question...apatite is known to cumulate vast amounts of REEs. Could
it have any influence on REE mobility during some metamorphic or metasomatic
mobilization events? 


Tomas Magna
Institute for Isotope Geology and Mineral Resources
Department of Earth Sciences, ETH Zentrum, NO C61.1 Sonneggstrasse
5,CH-8092, Zürich, Switzerland tel. +41-1-632-6441 fax. +41-1-632-1179
e-mail: [log in to unmask]