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Journal Article

Grain-scale distribution of molybdenite polytypes versus rhenium contents: μXRD and EBSD data

Olga Y. Plotinskaya, Vladimir V. Shilovskikh, Jens Najorka, Elena V. Kovalchuk, Reimar Seltmann, John Spratt
Published: 30 July 2019
Mineralogical Magazine (2019) 83 (5): 639–644.
DOI: https://doi.org/10.1180/mgm.2019.49
... light; ( b ) enlarged part of ( a ), Re L α X-ray map, circles show μXRD analyses; ( c ) and ( d ) EBSD data (1.5 µm step): ( c ) phase map showing the distribution of 2 H and 3 R polytypes; ( d ) inverse-pole figure map showing different orientations in colours relative to the X 0 direction...
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View PDF for article title, Grain-scale distribution of molybdenite polytypes versus rhenium contents: μXRD and <span class="search-highlight">EBSD</span> <span class="search-highlight">data</span>
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Journal Article

Quantitative electron backscatter diffraction (EBSD) data analyses using the dictionary indexing (DI) approach: Overcoming indexing difficulties on geological materials

Katharina Marquardt, Marc De Graef, Saransh Singh, Hauke Marquardt, Anja Rosenthal, Sanae Koizuimi
Published: 01 September 2017
American Mineralogist (2017) 102 (9): 1843–1855.
DOI: https://doi.org/10.2138/am-2017-6062
...Katharina Marquardt; Marc De Graef; Saransh Singh; Hauke Marquardt; Anja Rosenthal; Sanae Koizuimi Electron backscatter diffraction (EBSD) data yield plentiful information on microstructure and texture of natural as well as experimentally produced mineral and rock samples. For instance...
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View PDF for article title, Quantitative electron backscatter diffraction (<span class="search-highlight">EBSD</span>) <span class="search-highlight">data</span> analyses using the dictionary indexing (DI) approach: Overcoming indexing difficulties on geological materials
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Journal Article

Crystallographic orientation relationships in host–inclusion systems: New insights from large EBSD data sets

Thomas A. Griffiths, Gerlinde Habler, Rainer Abart
Published: 01 March 2016
American Mineralogist (2016) 101 (3): 690–705.
DOI: https://doi.org/10.2138/am-2016-5442
... of analyses. This paper uses EBSD to study host–inclusion CORs in an inclusion-rich Permian metapegmatite garnet (Koralpe region, Eastern Alps, Austria), demonstrating the importance of large data sets and of EBSD in particular for the analysis of CORs. The distribution of measured orientations reflects host...
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View PDF for article title, Crystallographic orientation relationships in host–inclusion systems: New insights from large <span class="search-highlight">EBSD</span> <span class="search-highlight">data</span> sets
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Journal Article

Using EBSD Data to Analyze Effect of Heat Supplied by Granite on CPO of Quartz in Deformed Quartzite

Manish A. Mamtani, A. R. Renjith
Published: 01 July 2015
Jour. Geol. Soc. India (2015) 86 (1): 5–8.
DOI: https://doi.org/10.1007/s12594-015-0275-7
...Manish A. Mamtani; A. R. Renjith Abstract Electron Backscatter Diffraction (EBSD) data of quartz are presented from two quartzite samples of the Lunavada Group (Aravalli Mountain Belt, India). The two samples lie at a distance of 4 km and 30 km from the eastern margin of Godhra granite, which...
FIGURES
View PDF for article title, Using <span class="search-highlight">EBSD</span> <span class="search-highlight">Data</span> to Analyze Effect of Heat Supplied by Granite on CPO of Quartz in Deformed Quartzite
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Journal Article

Domainal Petrofabric Analysis of Micaceous Quartzite using EBSD Data: Role of Muscovite in LPO Evolution of Quartz

A. R. Renjith, Manish A. Mamtani
Published: 01 May 2014
Jour. Geol. Soc. India (2014) 83 (5): 479–482.
DOI: https://doi.org/10.1007/s12594-014-0074-6
... not only provides the possibility of textural mapping of an area of a sample (thin section/rock slice) automatically, but also gives detailed crystallographic data - e.g. in quartz it gives orientations of c - and a -axes. Also, EBSD data provide the possibility of analyzing the LPO of different domains...
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View PDF for article title, Domainal Petrofabric Analysis of Micaceous Quartzite using <span class="search-highlight">EBSD</span> <span class="search-highlight">Data</span>: Role of Muscovite in LPO Evolution of Quartz
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Image
Maps derived from EBSD data for (a) EBSD Map 1, (b) EBSD Map 2, and (c) EBSD Map 3, shown in Figure 2. In each map, part (i) is a map of EBSP band contrast. In these maps, the variations in band contrast depict inter- and intragrain boundaries; (ii) is a grain map colored for grain size (long axis length of fitted ellipse). Domains of poor band contrast that could not be indexed are shown in white. The boundaries between misoriented pixels of 5–15° and &gt;15° are shown as thin and thick solid lines, respectively. &gt;15° boundaries define large, elongate grains oriented at a high angle to the trace of the agitator substrate. The 5–15° boundaries show intragrain misorientation substructure. The labeled grains a–c in (a, ii) are shown in detail in Figure 7.

Maps derived from EBSD data for ( a ) EBSD Map 1, ( b ) EBSD Map 2, and ( c...

Published: 01 August 2009
F igure 4. Maps derived from EBSD data for ( a ) EBSD Map 1, ( b ) EBSD Map 2, and ( c ) EBSD Map 3, shown in Figure 2 . In each map, part (i) is a map of EBSP band contrast. In these maps, the variations in band contrast depict inter- and intragrain boundaries; (ii) is a grain map colored
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Identification of region of interest (ROI) from SEM-EBSD data (modified after Mamtani et al., 2020). (a) Inverse pole figure map of magnetite shown in the boxed area in figure 4d. I-II marks the profile line across a subgrain boundary within magnetite. Misorien-tation profile of magnetite along I-II is shown in (b). A misorientation of 6o is recorded indicating the presence of a low angle grain boundary (LAGB). This is shown in SEM image in (c) along with a biotite (Bi) grain. Thin film of magnetite for TEM study was extracted from the dashed area in (c), which is the Region of Interest (ROI). Note that the SEM image is in the XZ reference frame of the schist.

Identification of region of interest (ROI) from SEM-EBSD data (modified aft...

Published: 01 January 2025
Fig.5. Identification of region of interest (ROI) from SEM-EBSD data (modified after Mamtani et al., 2020 ). (a) Inverse pole figure map of magnetite shown in the boxed area in figure 4d. I-II marks the profile line across a subgrain boundary within magnetite. Misorien-tation profile
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EBSD data of three occurrences of chladniite [(a) area A, (b) area A, (c) area B] and its associated mineral assemblages with forward scattered electron diode (FSD), phase overlay, and inverse pole (IPF) images along with the Kikuchi patterns, Kikuchi bands, and Kikuchi solutions as well as pole figures {0001}, {1010}, and {1120}.

EBSD data of three occurrences of chladniite [( a ) area A, ( b ) area A, (...

Published: 01 September 2024
Figure 3. EBSD data of three occurrences of chladniite [( a ) area A, ( b ) area A, ( c ) area B] and its associated mineral assemblages with forward scattered electron diode (FSD), phase overlay, and inverse pole (IPF) images along with the Kikuchi patterns, Kikuchi bands, and Kikuchi solutions
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EBSD data of ilmenite aggregate, sample CT827a, Zipplingen. (a) Phase map of ilmenite (red), magnetite (blue), and rutile (yellow). (b) Orientation map (all Euler coloring) of a. (c) Grain Reference Orientation Distribution map (GROD) displaying the angular deviation from the average grain orientation. Note the short wavelength misorientation pattern in the core. (d and e) Pole figures of the {0001}, {1120}, and {1011} planes of the (d) coarse grain in the core and (e) polycrystalline ilmenite rim.

EBSD data of ilmenite aggregate, sample CT827a, Zipplingen. ( a ) Phase map...

Published: 01 June 2024
Figure 4. EBSD data of ilmenite aggregate, sample CT827a, Zipplingen. ( a ) Phase map of ilmenite (red), magnetite (blue), and rutile (yellow). ( b ) Orientation map (all Euler coloring) of a . ( c ) Grain Reference Orientation Distribution map (GROD) displaying the angular deviation from
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EBSD data of ilmenite aggregate within sample CT827a, Zipplingen. (a) All Euler orientation map. Note the larger grains with concave grain boundaries indicated by the three arrows as well as the region strongly enriched in TiO2 displayed by the white line. (b) GROD map displaying the angular deviation from the average grain orientation. Note the grains with internal misorientation and irregular grain boundaries indicated by the white arrows. (c–e) Ilmenite pole figures of the {0001}, {1120}, and {1011} planes of (c) grains &lt;5 µm, (d) grains 5–10 µm, (e) grains &gt;10 µm. (f) Orientation of all grains with GROD coloring as displayed in b. Blue circles indicate that the enclosed orientation data are mostly derived from grains with low internal misorientation, whereas red circles indicate that the enclosed orientation data are mostly derived from grains with relatively high internal misorientation.

EBSD data of ilmenite aggregate within sample CT827a, Zipplingen. ( a ) All...

Published: 01 June 2024
Figure 6. EBSD data of ilmenite aggregate within sample CT827a, Zipplingen. ( a ) All Euler orientation map. Note the larger grains with concave grain boundaries indicated by the three arrows as well as the region strongly enriched in TiO 2 displayed by the white line. ( b ) GROD map displaying
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EBSD data collected from heterogeneous Pd-rich pentlandite grains: (a and b) EBSD patterns collected from Pd-rich and Pd-free areas, correspondingly; (c) EDX mapping of the corresponding grain in Ni and Pd characteristic X-rays; (d) diffraction quality map; (e) Euler-colored orientation map and corresponding inverse pole figure, (f) local misorientation map depicting local strains and deformations and local disorientation graph; (g) map of disorientation from average depicting grain modularity and disorientation directions and corresponding coloring legend. (Color online.)

EBSD data collected from heterogeneous Pd-rich pentlandite grains: ( a and...

Published: 01 November 2023
Figure 4. EBSD data collected from heterogeneous Pd-rich pentlandite grains: ( a and b ) EBSD patterns collected from Pd-rich and Pd-free areas, correspondingly; ( c ) EDX mapping of the corresponding grain in Ni and Pd characteristic X-rays; ( d ) diffraction quality map; ( e ) Euler-colored
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Microstructure and EBSD data of calcite of mylonitic shear zone (Falasarna, sample 020414/7-2). (a) Distribution of crystallographic axes of calcite shown in equal-area upper-hemisphere projection. Asymmetry of texture suggests a dextral sense of shear, which means top-top-the WNW in the field. (b) Misorientation data of calcite mylonite. (c) Scanning Electron Microscopy image of deformed calcite of mylonite (sample section: width 52 µm, height 39 µm, scale 10 µm). For further explanation, see text.

Microstructure and EBSD data of calcite of mylonitic shear zone (Falasarna,...

Published: 20 July 2023
Figure 12. Microstructure and EBSD data of calcite of mylonitic shear zone (Falasarna, sample 020414/7-2). (a) Distribution of crystallographic axes of calcite shown in equal-area upper-hemisphere projection. Asymmetry of texture suggests a dextral sense of shear, which means top-top-the WNW
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(a) Quartz EBSD data from the analysed samples (for sample locations see Fig. 8). The colours of the example IPF figures on the left and the pole figures are in reference to the Z axis of the finite strain (pole of the main foliation). Black lines are high-angle boundaries (misorientation &gt;10°), fuchsia lines are low-angle boundaries (misorientation 3–10°) and red lines are Dauphiné twin boundaries (misorientation of 60° around the c axis). The orientation in the pole figures data has been plotted as one point per grain. (b) Legend for the quartz IPF map, showing the main quartz crystallographic directions with different colours. (c) Interpreted quartz c-axes &lt;0001&gt; patterns of the studied samples. OA – opening angle; β – angle between the mylonitic foliation and the orthogonal plane of the quartz c-axes central girdle.

(a) Quartz EBSD data from the analysed samples (for sample locations see Fi...

Published: 20 April 2020
Fig. 9. (a) Quartz EBSD data from the analysed samples (for sample locations see Fig.  8 ). The colours of the example IPF figures on the left and the pole figures are in reference to the Z axis of the finite strain (pole of the main foliation). Black lines are high-angle boundaries
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Structure of the same VPC crystals shown in Figure 2. (a–c) EBSD data, showing band contrast (a) and diffraction pattern indexing (b) to be poor in crystal cores and strong in crystal rims. (c) EBSD Euler images with orientation boundaries outlined. (d) Hyperspectral CL map colored by intensity of luminescence on the ~2.7 eV (459 nm) band that is intrinsic to cristobalite. (e) Laser Raman spectra from positions marked in a on Crystal L10-01 only, compared to characteristic α-cristobalite peak positions at 230 and 417 cm–1 (Kingma and Hemley 1994). Some beam damage is apparent in Crystal L10-01, which was analyzed by EPMA before EBSD and Laser Raman, but concurrently with CL. No beam damage is apparent in Crystal L10-07. (Color online.)

Structure of the same VPC crystals shown in Figure 2 . ( a–c ) EBSD data, ...

Published: 01 April 2020
Figure 3. Structure of the same VPC crystals shown in Figure 2 . ( a–c ) EBSD data, showing band contrast ( a ) and diffraction pattern indexing ( b ) to be poor in crystal cores and strong in crystal rims. ( c ) EBSD Euler images with orientation boundaries outlined. ( d ) Hyperspectral CL map
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EBSD data from the boxed area in Figure 16F; A) inverse pole figure map, crystals orientated along x-direction and colored according to reference triangle at B. Curved diagonal line marks one margin of a bivalve, three crystals cross the shell boundary marked with asterisks. The white area in the center right is a hole in the thin section; B) color reference triangle; C) pole plot of c-axis {0001} orientation; D) pole plots of a-axes {010} orientation. See text for further details.

EBSD data from the boxed area in Figure 16 F; A) inverse pole figure map...

Published: 28 January 2019
Fig. 17.— EBSD data from the boxed area in Figure 16 F; A) inverse pole figure map, crystals orientated along x-direction and colored according to reference triangle at B. Curved diagonal line marks one margin of a bivalve, three crystals cross the shell boundary marked with asterisks
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EBSD data from the boxed area in Figure 16F; A) inverse pole figure map, crystals orientated along x-direction and colored according to reference triangle at B. Curved diagonal line marks one margin of a bivalve, three crystals cross the shell boundary marked with asterisks. The white area in the center right is a hole in the thin section; B) color reference triangle; C) pole plot of c-axis {0001} orientation; D) pole plots of a-axes {010} orientation. See text for further details.

EBSD data from the boxed area in Figure 16 F; A) inverse pole figure map...

Published: 28 January 2019
Fig. 17.— EBSD data from the boxed area in Figure 16 F; A) inverse pole figure map, crystals orientated along x-direction and colored according to reference triangle at B. Curved diagonal line marks one margin of a bivalve, three crystals cross the shell boundary marked with asterisks
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(A) Electron backscatter diffraction (EBSD) data show lattice misorientation within olivine (1–2), amphibole (3), and orthopyroxene (4). Maximum local misorientation from arbitrary point (white cross) varies for each crystal (see respective legend). (B) Pole figure and (C) misorientation axes data from crystal 1. (D–E) Olivine (Ol) low-angle boundary analyses and their respective misorientation axes for boundaries b1 and b2. (F) Amphibole (Amp) low-angle boundary analysis and misorientation axes. (G) Orthopyroxene (Opx) low-angle boundary analysis and misorientation axes.

(A) Electron backscatter diffraction (EBSD) data show lattice misorientatio...

Published: 12 December 2018
Figure 7. (A) Electron backscatter diffraction (EBSD) data show lattice misorientation within olivine (1–2), amphibole (3), and orthopyroxene (4). Maximum local misorientation from arbitrary point (white cross) varies for each crystal (see respective legend). (B) Pole figure and (C
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Electron backscatter diffraction (EBSD) data for granular zircon grains in Australasian Muong Nong–type (MN-type) tektites. A: Maps showing crystallographic orientations in Euler coordinate space. Elliptical areas without data are secondary ion mass spectrometry (SIMS) pits. B: Pole figures showing data from maps in A for (001) and {110}. Angular separations of 90° are shown for {110}. C: Plots showing high-angle (85° to 95°) misorientation axes. Misorientation axes coincide with poles for (001) and {110}. Stereonets are equal area, lower hemisphere projections in sample x-y-z reference frame.

Electron backscatter diffraction (EBSD) data for granular zircon grains in ...

Published: 20 December 2017
Figure 3. Electron backscatter diffraction (EBSD) data for granular zircon grains in Australasian Muong Nong–type (MN-type) tektites. A: Maps showing crystallographic orientations in Euler coordinate space. Elliptical areas without data are secondary ion mass spectrometry (SIMS) pits. B: Pole
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MODAL COMPOSITION OF PERIDOTITES (FROM EBSD DATA)

Published: 01 February 2017
TABLE 1. MODAL COMPOSITION OF PERIDOTITES (FROM EBSD DATA)
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EBSD DATA COLLECTION AND PROCESSING SETTINGS

Published: 01 November 2016
TABLE 1. EBSD DATA COLLECTION AND PROCESSING SETTINGS