Petrogenetic Grids and AFM Diagrams
Program Gibbs has "pre-programmed"
petrogenetic grids in the KFMASH system using the thermodynamic
data bases of Spear, Pattison and Cheney (2000, unpublished) and
Holland and Powell (1998). A number of routines have been written
that utilize these grids, including
A tutorial describing these options is available
from the Gibbs download page
- Holland, T. J. B. and Powell, R. (1998) An internally-consistent
thermodynamic dataset for phases of petrological interest. Journal
of Metamorphic Geology, 16, 309-343.
- Pattison, D. M. R., Spear, F. S., DeBuhr, C. L., Cheney,
J. T. and Guidotti, C. V. (submitted) Natural assemblage and
thermodynamic analysis of the reaction muscovite + cordierite
= Al2SiO5 + biotite + quartz + H2O: Implications for the metapelitic
petrogenetic grid. Journal of Metamorphic Geology
- Pattison, D. R. M., Spear, F. S. and Cheney, J. T. (1999)
Polymetamorphic origin of muscovite + cordierite + staurolite
+ biotite assemblages: Implications for the metapelitic petrogenetic
grids and for P-T paths. Journal of Metamorphic Geology, 17,
- Spear, F. S. (1999) Real-time AFM diagrams on your Macintosh.
Materials Research, 1, 1-18.