Description


XMapTools is a MATLAB©-­based graphic user interface (GUI) set of programs to process and standardise microprobe X-ray images and LA-ICP-MS trace element maps. XMapTools aims to make the treatment of petrological compositional maps easy. This package includes a large set of general and external functions in order to import and standardise and display compositional maps, to calculate structural formulae as well as equilibrium pressure and temperature conditions using semi-empirical calibrations. Many additional processing tools have been developed and will be frequently updated. In this website, the latest release of XMapTools software is available and includes online updates with additional tools and notices.XMapTools Graphic User Interface

What is XMapTools and what calculations does it do?

XMapTools software (Lanari et al., 2014) uses a Castaing approach (De Andrade et al., 2006) to standardize “qualitative” X-ray map data from electron microprobe or SEM into maps of mineral oxide composition. This goal is achieved using high precision point analyses as standards. Different chemical groups corresponding to the different minerals are separated using a K-­means statistical approach. From maps of element oxide composition, it is possible to estimate the bulk composition of the mapped area or of a selected local microdomain. One of the main advantages of the software is that it can calculate composition, structural formulae and phase equilibrium conditions, such as pressure and temperature, at each pixel on a thin section scale. This allows for integrated textural interpretation of recorded physico-chemical conditions on a micro-­scale. This goal is achieved using various geothermometers or geobarometers (~50 functions available).

Fig2

Chemical modules and Add-ons

Several chemical modules are available in XMapTools. For example, binary and ternary chemical diagrams can be plotted using the modules Chem2D and TriPlot3D and RGB. These modules are available to identify the main chemical variations and to identify the groups of composition within the map. For LA-ICP-MS trace element maps, the module Spider generates spider diagrams from the composition of pixels, lines and groups of pixels.

ChemModulesXMapTools

The XMapTools’ add-on system has been introduced in the version 2.3.1. Anyone can develop is own add-on and call it in the main GUI to use the data generated by XMapTools.

Navigating this website

Acknowledgements

I would like to thank O. Vidal, A.-M. Boullier, A. Verly, B. Gardonio, F. Bernier, L. Airaghi, E., Lewin, S. Guillot, S. Schwartz, M. Munoz, E. Janots, K. Malamoud, J. Braun, (ISTerre Grenoble) N. Riel (Durham University) M. Engi, J. Hermann, D. Rubatto, M. Burn, A. Berger, M. Tedeschi, A. Vho, E. Kempf and F. Guintoli (University of Bern) C. Loury, Y. Rolland (GeoAzur Nice) T. Raimondo (University of South Australia) E. Duesterhoeft and R. Bousquet (Kiel University) C. Martin (American Museum of Natural History) E. Grosch (University of Bergen) C. de Capitani, L. Frantz (University of Basel) A. Pourteau, R. Oberhänsli (University of Potsdam) S. Centrella (University of Münster) F. Guillot, M. Dupuis (Université de Lille) A. Robert (Université de Toulouse) B. Dubacq, P. Agard, M. jentzer (ISTEP Paris) V. De Andrade (NSLS II Brookhaven) M. Zucali (Univeristy of Milano) D. Waters (University of Oxford) G. Ortolano (Catania University) for help, suggestions, comments, data and/or collaborations in order to develop and test XMAPTOOLS.