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page last updated: 28.10.2015

Datafiles (tcd)

This page contains a number of data files that can be downloaded. There are four groups of datafiles here. All the up-to-date files below are set up for thermocalc 3.30 and later. If you wish to use these models in earlier versions of thermocalc, you will have to combine the a-x and script files into one file.

This page is still incomplete, There is a relatively comprehensive set of a-x files for metapelites and a couple of recent a-x files for metabasic rocks.  Most other rocktypes have only one or no files.  Likewise, the list of mineral codes is also incomplete. More files will be uploaded over time.

System a-x files: (for version 3.30 and above) these are files containing the up-to-date activity-composition models in a number of systems for different rock types. Complete files with all/most of the minerals you will need/want to use in a number of systems are divided into broad rock types and can be downloaded by selecting the desired chemical system for each rock type. These are the a-x files you will most commonly need, however, they can be augmented by adding new minerals if needed from the mineral a-x files section.

Mineral a-x models. These files are organised by mineral group and contain the a-x relationships in all currently available systems for that mineral. These files are useful for extending the minerals considered in the system a-x files via cutting and pasting the required a-x model(s) into an existing system a-x file.

Script files: (for version 3.30 and above) these are example script files for calculating different types of diagrams. The files are set up for undertaking  calculations for P-T pseudosections, P/T-x pseudosections compatibility diagrams, µ-µ diagrams, P/T-xCO2 diagrams and more.

Earlier thermocalc datafiles. Earlier thermocalc datafiles (ie with a tcd prefix) from specific papers can be downloaded. These will typically not contain the most up-to-date a-x models and should only be used to reproduce the published results or for teaching purposes. Most of these will not work with the latest version of thermocalc, but can be modified to do so. It is recommended that they are used with the version of thermocalc used in the original papers. (This section is currently empty).

Latest Models - System a-x files

PLEASE NOTE: all a-x and script files for use with the new Holland & Powell 2011 dataset can be found on the dataset 6 page

A range of a-x files in different systems can be downloaded here. These are divided into some basic rock types. The files are all named with the structure tc-<system><rocktype><note>.zip  eg tc-KFMASHp_x.zip. These are zipped .txt files with the same name. 

The Mac and PC download files are identical except for the line-endings (due to the different platforms).

The following rocktype identifiers:

The “notes” _x, and _z are explained below:

_x: these files include sapphirine which should only be used with the tc-ds55s dataset (until further notice)

_z: these files contain older models for some Mn-bearing phases than the Mn-free equivalents

Mac Files

Pelitic Rocktypes

Mafic Rocktypes

Intermediate & COG

Carbonate-bearing Rocktypes

Aqueous Solutions

PC Files

Pelitic Rocktypes

Mafic Rocktypes

Intermediate & COG

Carbonate-bearing Rocktypes

Aqueous Solutions


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Latest Models - Minerals

Here you can download files with a selection of up-to-date a-x models for specific minerals and mineral groups. Note that these files are not thermocalc-readable a-x files. The sources for the models and their chemical systems are given in each file. The files in the mac and pc download areas are identical except for line endings (mac=unix line endings, pc=DOS line endings)

Mac Files

PC Files


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Script Files

Example script files for different types of calculations are below. Each script file is set up to construct a particular type of diagram. In most cases these have been set up to construct particular published figures, referred to in the script file itself.

Mac Files

PC Files


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Newer DS5 Models

Here you can download the new Fe3+ sapphirine model, the Zr models and the updated Diener and Powell 2012 amphibole and pyroxene models.

Taylor-Jones, K. & Powell, R., 2010. The stability of sapphirine + quartz: calculated phase equilibria in FeO–MgO–Al2O3–SiO2–TiO2–O. Journal of Metamorphic Geology, 28, 615–633.

Download a-x files mac
Download a-x files PC

Kelsey, D.E. & Powell, R., 2011. Progress in linking accessory mineral growth and breakdown to major mineral evolution in metamorphic rocks: a thermodynamic approach in the Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O-TiO2-ZrO2 system. Journal of Metamorphic Geology, 30, 151–166. (DOI: 10.1111/j.1525-1314.2010.00910.x)

Download a-x files mac
Download a-x files PC

Diener, J.F.A & Powell, R., 2012. Revised activity-composition models for clinopyroxene and amphibole. Journal of Metamorphic Geology, 29, 131–142.

Download a-x files mac
Download a-x files PC

 

 

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