Hello everybody,

Is anyone aware of recent (after 1993) or current experiments on
quartz-magnetite oxygen isotope fractionation?
Will  the use of laser have a large advantage, given that magnetite is a
difficult phase to react conventionally?

When I apply Quartz-Magnetite oxygen isotope thermometers to different
zoned tuffs (in order to determine the quenching temperature) and then
compare it to the temperature determined using Magnetite-Ilmenite, I mostly
discover that former (Quartz-Magnetite) temperature is often >100 C higher.
There should be something systematically different in one of these methods.
Analytical?

Ilya Bindeman
Research Associate
Department of Geology and Geophysics
University of Wisconsin
1215 W Dayton Str
Madison WI 53706
USA

608-262-7118
[log in to unmask]
http://geology.wisc.edu/~inbindem