Dear Colleagues,

    I'd greatly appreciate a reminder of the older
references, but also ideas from the more recent
literature, direct experience, and gut-instinct, having
to do with the degree to which O-C-isotope compositions
of coexisting calcite and dolomite can be separately (and
quantitatively) analyzed via phosphoric acid dissolutions
(at different temperatures).  We're particularly
interested in obtaining O-C isotopic compositions of
calcite in rocks also containing varying, but small,
amounts of dolomite.

    Cheers/Thanks in advance,

    Gray Bebout, Lehigh University

__________________________________

Gray E. Bebout, Visiting Research Scientist (until 1-01)
The Pheasant Memorial Laboratory for Geo- &
Cosmochemistry (PML)
Institute for Study of the Earth's Interior (ISEI)
Okayama University at Misasa
Tottori-ken 682-0193, JAPAN
__________________

Permanent Address:
Gray E. Bebout, Associate Professor
Department of Earth & Environmental Sciences
31 Williams Drive
Lehigh University
Bethlehem, Pennsylvania 18015 USA
Home Page: http://www.lehigh.edu/~bdi2/silab.html