New mineral activity–composition relations for thermodynamic calculations in metapelitic systems
Johannes Gutenberg University Mainz · The University of Melbourne · +1 more institution
Abstract
Abstract New activity–composition ( a – x ) relations for minerals commonly occurring in metapelites are presented for use with the internally consistent thermodynamic dataset of Holland & Powell ( , Journal of Metamorphic Geology , 29 , 333–383). The a – x relations include a broader consideration of Fe 2 O 3 in minerals, changes to the formalism of several phases and order–disorder in all ferromagnesian minerals where Fe–Mg mixing occurs on multiple sites. The a – x relations for chlorite, biotite, garnet, chloritoid, staurolite, cordierite, orthopyroxene, muscovite, paragonite and margarite have been substantially reparameterized using the approach outlined in the companion paper in this issue. For the…
Citation impact
- FWCI
- 15.45
- Percentile
- 100%
- References
- 42
Authors
5Topics & keywords
- Staurolite
- Geology
- Biotite
- Metamorphic rock
- Muscovite
- Geochemistry
- Mineral
- Mineralogy