Dear all,
I am struggling to model a rock which contains the assemblage K-white mica + Na-white mica + chlorite + quartz + graphite + rutile. I have followed step by step the tutorial available on Perplex's website.
http://www.perplex.ethz.ch/perplex_pseudosection.html
which suggests to model graphite-bearing rocks as an open system with respect to a binary H2O-CO2 fluid with buffered f(O2).
Following the tutorial, I have set a H2O-CO2 fluid in excess, modeled with equation 10 by Connolly & Cesare, 1993), buffered with X(O). Set SiO2 and O2 as excess components, then specified a sectioning value for X(O) of 0.33333333333333334 (1/3).
What I get from vertex is always the same error:
**error ver015* missing composant for O2.
I have tried everything. Changed equation, sectioning value, removed fluid/components in excess but it doesn't work.
Therefore, I was wondering if there is a better way to model a graphite-bearing rock.
Attached, you may find the DAT file for Perplex
Thank you very much.
Dear Samuel,
There is a yahoo group which is dedicated for Perple_X. You can find the link of the group at the website of it. It is better to ask your question there and certainly you will get the solution of your problem.
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