Showing results for: [ Pearce, Mark ]
Electron back-scatter diffraction data set collected on sample GQ1943_2 from Sunrise Dam Gold Mine. The sample contains fine-grained quartz and dolomite with areas of recrystallised veins. Data is pre... moresented as an ASCII text file in the CHANNEL5 text file (.ctf) format that contains match unit parameters, phase ID, Euler angle triplets that use the Z-X'-Z'' (Bunge) definition and pattern quality measure (BC). less
Legacy data - Geology of ore deposits - Published 02 Sep 2016
A series of element maps collected using the Maia 384 detector array on the XFM beamline at the Australian Synchrotron. Maps are RGB composites (indicated by file name) or a combination of black and w... morehite intensity with RGB. Lower resolution versions of these files are used in a paper on the application of microanalysis techniques in ore geology and are made available here to allow the full resolution images (1:1 binning of pixels) to be accessed.less
1160.3 Sunrise DAM 3D Geochem - Synchrotron XRF mapping - Published 02 Sep 2016
TCInvestigator is a utility for the automated contouring of variations in mineral mode and composition as a function of pressure and temperature based on THERMOCALC pseudosections. This collection con... moretains the software installers for 32-bit and 64-bit windows, and Mac installations of the software as well as an exemplar dataset. less
Gold Research - Calculating thermodynamic equilibria in minerals - Published 08 Feb 2016
EBSDinterp is a computer program to interpolate electron backscatter diffraction (EBSD) data using the underlying microstructure as a guide to avoid creating artefacts. It reads in binary .cpr files (... morefrom Oxford-HKL CHANNEL 5) or ASCII .ctf files. The user can alter a number of processing parameters that control the the extent to which intepolation is permitted via the number of indexed neighbours a pixel has and the quality of the original EBSD pattern (using the band contrast).
It is written in MATLAB 2012b and compiled using the MATLAB compiler runtime (MCR) 2012b version 7 for both 32 and 64-bit Windows machines. EBSDinterp can be run using single or multicore computing as it make use of the parallel processing toolbox in MATLAB.less
Gold Research - EBSD data processing and analysis - Published 26 Jun 2015
EBSDinterp is a GUI-based Matlab program to perform microstructurally constrained interpolation of electron backscatter diffraction (EBSD) datasets. The dataset in this collection comprises ASCII Chan... morenel Text Files (.ctf) of the raw and processed datasets used in the publication describing EBSDinterp. The dataset contains EBSD data of a twinned plagioclase grain that has been deformed under greenschist facies conditions. Also included are the logfiles written out by EBSDinterp on completion of the data interpolation that describes the parameters used in the interpolation of the dataset.less
EBSDinterp is a GUI-based Matlab program to perform microstructurally constrained interpolation of electron backscatter diffraction (EBSD) datasets. The dataset in this collection comprises ASCII Cha... morennel Text Files (.ctf) of the raw and processed datasets used in the publication describing EBSDinterp. The dataset contains EBSD data of a large fractured albite aggregate filled with gold and pyrrhotite. This sample was collected from the Hamlet mine of the St Ives camp in Western Australia. Also included is the logfile written out by EBSDinterp on completion of the data interpolation that describes the parameters used in the interpolation of the dataset.less
Gold Research - EBSD data processing and analysis - Published 19 Jun 2015
Chemical mapping (energy dispersive x-ray spectroscopy) data of replacement microstructures in carbonates from the Junction gold deposit near Kambalda in the Yilgarn Craton, Western Australia. Maps sh... moreow relationships between phases as calcite is replaced by dolomite and siderite. Included are the Bruker composite files that contain spectra for each point on the map, images of chemical maps for individual elements and composite RGB maps showing Mg, Fe, and Ca respectively. For composite images, chemistry is overlain on back scattered electron images to give the image the resolution of the BSE image but chemical data from the x-ray spectra.less
Gold Research - Imaging of chemical variations during replacement reactions - Published 16 May 2013
Electron back scatter diffraction data of carbonates from the Junction gold deposit near Kambalda in the Yilgarn Craton, Western Australia. Maps show relationships between phases as calcite is replace... mored by dolomite and siderite. Collection contains .ctf (Channel Text Files) which are ASCII files with phase and orientation data as euler angles. Note that dolomite is indexed using the calcite match unit due to problems with systematic misindexing of dolomite.
Two files are included for each map with suffixes 'Raw' and 'Processed' to indicate the as collected and final published data respectively. less
Gold Research - Electron Back Scatter Diffraction Analysis of Carbonate Replacement Microstructures - Published 16 May 2013
Images of replacement microstructures in carbonates from the Junction gold deposit near Kambalda in the Yilgarn Craton, Western Australia. Images show relationships between phases as calcite is replac... moreed by dolomite and siderite. Included are the raw images as well as a full sized stitched version, a reduced resolution stitched image and a contrast adjusted image that shows variations in the back scattered electron response of both the siderite, and dolomite and calcite.