Skeletal apatite again

[cwright@xxxxxxxxxxx (Cindy Wright)]

Hi everyone:  I don't really want to flog a dead horse (so to speak) but
I'd like to rehash our discussions a few months ago concerning the
incorporation of trace metals, ions and isotopes into skeletal/biogenic
apatite.  Clive Trueman once asked about theories and ideas concerning the
rate of uptake (slow vs. fast).  I don't recall from my archive files if
this was ever discussed or addressed.  I'm also wondering about exchange
flux, preferential uptakes and how this might effect the isotopic ratios (I
am especially concerned with neodymium but this could equally apply for Ce,
Sr etc).  Also, are there any quantitative estimates about ionic bonding
strength once these elements have replaced Ca++ in the lattice?

I'm sure there are others out there who are interested in these questions
so please respond to the Net.

Many Thanks
Cindy

Cindy Wright
School of Earth and Ocean Science
Box 1700
University of Victoria
Victoria, British Columbia
V8W 2Y2