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mineral liberation analysis

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Journal Article

Source-to-sink sediment delivery in the Gulf of Papua from scanning electron microscopy and mineral liberation analysis–aided provenance analysis of deep-sea turbidite sands Available to Purchase

Erlangga Septama, Samuel J. Bentley, Sr.
Journal: AAPG Bulletin
Published: 01 June 2017
AAPG Bulletin (2017) 101 (6): 907–936.
DOI: https://doi.org/10.1306/09021615184
... microscopy and mineral liberation analysis, which yielded a broader and more insightful classification than manual point counts. We determined that (1) multiple terrestrial sediment sources along an approximately 500-km (300-mi) basin margin converged to form one continuous deep-sea system in two major...
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View PDF for article title, Source-to-sink sediment delivery in the Gulf of Papua from scanning electron microscopy and <span class="search-highlight">mineral</span> <span class="search-highlight">liberation</span> <span class="search-highlight">analysis</span>–aided provenance <span class="search-highlight">analysis</span> of deep-sea turbidite sands
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Enlarged parts of a mineral liberation analysis false colour image from porphyritic type-1 and 2 dykes illustrating key mineral phases, their relations, and textures. (a) Type-1 sample AP-L137-S1 and (b) type-2 sample AP-L43-S1 (see Supplemental Material C). Key: Brt—barite; Ca-Ank—Ca-rich ankerite; Cal—calcite; Di—diopside; Fe-Ank—Fe-rich ankerite; Ilm—ilmenite; Phl—phlogopite; Ti-Bt—titanian biotite; Ti-Mag—Ti-rich magnetite (after Whitney and Evans 2010).

Enlarged parts of a mineral liberation analysis false colour image from por... Open Access

Published: 05 September 2024
Fig. 3. Enlarged parts of a mineral liberation analysis false colour image from porphyritic type-1 and 2 dykes illustrating key mineral phases, their relations, and textures. ( a ) Type-1 sample AP-L137-S1 and ( b ) type-2 sample AP-L43-S1 (see Supplemental Material C). Key: Brt—barite; Ca-Ank—Ca
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Volume % of scanning electron microscope-mineral liberation analysis identi... Open Access

Published: 13 July 2024
Table A1. Volume % of scanning electron microscope-mineral liberation analysis identified facies in thin sections.
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Representative mineral liberation analysis (MLA) images highlighting mineralogical and textural features of magmatic-hydrothermal alteration in the Delamerian porphyry systems. Anabama Hill: (A) Quartz-white mica overprinting epidote-chlorite alteration in granodiorite, (B) epidote-pyrite ± chalcopyrite vein cutting white mica-chlorite altered diorite, and (C) white mica-pyrite-chalcopyrite vein cutting K-feldspar–altered monzogranite. Netley Hill: (D) White mica-quartz cemented breccias with albite-altered clasts, (E) massive quartz-white mica alteration in porphyritic diorite, and (F) pyrite-quartz vein cutting the granite with intense white mica alteration and disseminated chalcopyrite. Bendigo: (G) Fine-grained diorite having strong albite and moderate white mica alteration, (H) thick white mica-pyrite-chalcopyrite vein cutting albite-bearing granite, and (I) massive white mica-quartz alteration on the granodiorite.

Representative mineral liberation analysis (MLA) images highlighting minera... Available to Purchase

Published: 01 September 2023
Fig. 7. Representative mineral liberation analysis (MLA) images highlighting mineralogical and textural features of magmatic-hydrothermal alteration in the Delamerian porphyry systems. Anabama Hill: (A) Quartz-white mica overprinting epidote-chlorite alteration in granodiorite, (B) epidote-pyrite
Journal Article

The spatial association of accessory minerals with biotite in granitic rocks from the South Mountain Batholith, Nova Scotia, Canada Open Access

D. Barrie Clarke, Axel D. Renno, David C. Hamilton, Sabine Gilbricht, Kai Bachmann
Journal: Geosphere
Published: 22 December 2021
Geosphere (2022) 18 (1): 1–18.
DOI: https://doi.org/10.1130/GES02339.1
...D. Barrie Clarke; Axel D. Renno; David C. Hamilton; Sabine Gilbricht; Kai Bachmann Abstract We use mineral liberation analysis (MLA) to quantify the spatial association of 15,118 grains of accessory apatite, monazite, xenotime, and zircon with essential biotite, and clustered with themselves...
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View PDF for article title, The spatial association of accessory <span class="search-highlight">minerals</span> with biotite in granitic rocks from the South Mountain Batholith, Nova Scotia, Canada
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Journal Article

MINERALOGY OF RARE OCCURRENCES OF PRECIOUS-METAL-ENRICHED MASSIVE SULFIDE IN THE VOISEY’S BAY Ni–Cu–Co OVOID DEPOSIT, LABRADOR, CANADA Available to Purchase

Michelle A. Kelvin, Paul J. Sylvester, Louis J. Cabri
Published: 01 December 2011
The Canadian Mineralogist (2011) 49 (6): 1505–1522.
DOI: https://doi.org/10.3749/canmin.49.6.1505
... description of the precious-metal mineralogy of four such occurrences within massive sulfides. The four samples, all from near the center of the Ovoid, were examined by SEM-based Mineral Liberation Analysis for characterization of precious-metal minerals. Distributions of precious metals among the major...
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View PDF for article title, MINERALOGY OF RARE OCCURRENCES OF PRECIOUS-METAL-ENRICHED MASSIVE SULFIDE IN THE VOISEY’S BAY Ni–Cu–Co OVOID DEPOSIT, LABRADOR, CANADA
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Journal Article

Geogenic, Anthropogenic, and Authigenic Minerals Hosting Arsenic and Antimony in Yellowknife Bay Sediments Available to Purchase

Katrina A. Paudyn, Heather E. Jamieson, John Chételat, Christopher E. Schuh, Michael J. Palmer, Sean Mchale
Published: 29 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (4): 787–804.
DOI: https://doi.org/10.3749/2200035
... stack emissions, mine effluent, and Giant Mine tailings. A sediment sampling program was conducted in Yellowknife Bay to characterize As and Sb mineralogy using scanning electron microscopy-mineral liberation analysis. Mineralogical analysis of As- and Sb-hosted minerals in nine sediment cores suggests...
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View PDF for article title, Geogenic, Anthropogenic, and Authigenic <span class="search-highlight">Minerals</span> Hosting Arsenic and Antimony in Yellowknife Bay Sediments
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Journal Article

Variation in Platinum Group Mineral and Base Metal Sulfide Assemblages in the Lower Group Chromitites of the Western Bushveld Complex, South Africa Available to Purchase

Kai Bachmann, Inga Osbahr, Raimon Tolosana-Delgado, Deshenthree Chetty, Jens Gutzmer
Published: 01 September 2018
The Canadian Mineralogist (2018) 56 (5): 723–743.
DOI: https://doi.org/10.3749/canmin.1700094
... to add value to the chromite resources. This study focuses on the LG-6 and LG-6A chromitite seams at the Thaba mine located on the western limb of the Bushveld Complex. Platinum group minerals and base-metal sulfides are studied by mineral liberation analysis and electron microprobe analysis to define...
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View PDF for article title, Variation in Platinum Group <span class="search-highlight">Mineral</span> and Base Metal Sulfide Assemblages in the Lower Group Chromitites of the Western Bushveld Complex, South Africa
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Journal Article

Textural and mineral-chemistry constraints on columbite-group minerals in the Penouta deposit: evidence from magmatic and fluid-related processes Open Access

P. Alfonso, S. A. Hamid, M. Garcia-Valles, T. Llorens, F. J. López Moro, O. Tomasa, D. Calvo, E. Guasch, H. Anticoi, J. Oliva, D. Parcerisa, F. García Polonio
Published: 01 May 2018
Mineralogical Magazine (2018) 82 (S1): S199–S222.
DOI: https://doi.org/10.1180/minmag.2017.081.107
... of Sn. Mineralogical characterization of Nb-Ta oxide minerals was determined by X-ray diffraction, scanning electron microscopy, electron microprobe analysis and mineral liberation analysis. Mn-rich members of the columbite-group minerals (CGM) are the most common Ta-bearing phases, but microlite...
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View PDF for article title, Textural and <span class="search-highlight">mineral</span>-chemistry constraints on columbite-group <span class="search-highlight">minerals</span> in the Penouta deposit: evidence from magmatic and fluid-related processes
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Journal Article

Ore Petrography Using Megapixel X-Ray Imaging: Rapid Insights into Element Distribution and Mobilization in Complex Pt and U-Ge-Cu Ores Available to Purchase

Kan Li, Barbara Etschmann, Nicholas Rae, Frank Reith, Chris G. Ryan, Robin Kirkham, Daryl Howard, Diogo R.N. Rosa, Carla Zammit, Allan Pring, Yung Ngothai, Antony Hooker, Joël Brugger
Journal: Economic Geology
Published: 01 March 2016
Economic Geology (2016) 111 (2): 487–501.
DOI: https://doi.org/10.2113/econgeo.111.2.487
.... This is especially true for ores, which commonly result from a complex interplay of processes in highly dynamic environments. In recent years, a number of tools allowing the chemical mapping of major (e.g., mineral liberation analysis, MLA), minor (e.g., electron microprobe, EPMA), and trace (e.g., laser ablation...
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Journal Article

Indicator mineral and till geochemical signatures of the Broken Hammer Cu–Ni–PGE–Au deposit, North Range, Sudbury Structure, Ontario, Canada Open Access

M. B. McClenaghan, D. E. Ames, L. J. Cabri
Published: 05 December 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (3): 337–356.
DOI: https://doi.org/10.1144/geochem2019-058
... the region depositing a sandy till that contains abundant sperrylite (hundreds of grains), chalcopyrite, pyrite and gold in the heavy mineral fraction down-ice of mineralization. Mineral liberation analysis of the <0.25 mm heavy mineral fraction of metal-rich till identified a broader suite of PGM...
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View PDF for article title, Indicator <span class="search-highlight">mineral</span> and till geochemical signatures of the Broken Hammer Cu–Ni–PGE–Au deposit, North Range, Sudbury Structure, Ontario, Canada
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Journal Article

Mineralogical and textural controls on spectral induced polarization signatures of the Canadian Malartic gold deposit: Applications to mineral exploration Available to Purchase

Charles L. Bérubé, Gema R. Olivo, Michel Chouteau, Stéphane Perrouty
Journal: Geophysics
Published: 11 February 2019
Geophysics (2019) 84 (2): B135–B151.
DOI: https://doi.org/10.1190/geo2018-0404.1
... with mineral liberation analysis. A systematic decrease (Pearson r = − 0.75 ) in total chargeability with increasing fraction of the sulfide mineral interfaces associated with feldspar minerals (namely, K-feldspar and albite) was observed. On the other hand, total chargeability increased with the fraction...
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View PDF for article title, Mineralogical and textural controls on spectral induced polarization signatures of the Canadian Malartic gold deposit: Applications to <span class="search-highlight">mineral</span> exploration
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Includes: Supplemental Content
Journal Article

Variations in Composition, Texture, and Platinum Group Element Mineralization in the Lower Group and Middle Group Chromitites of the Northwestern Bushveld Complex, South Africa Available to Purchase

Felix E.D. Kaufmann, Marie C. Hoffmann, Kai Bachmann, Ilya V. Veksler, Robert B. Trumbull, Lutz Hecht
Journal: Economic Geology
Published: 01 May 2019
Economic Geology (2019) 114 (3): 569–590.
DOI: https://doi.org/10.5382/econgeo.4641
... as well as mineralization. Multiple samples within each layer were assayed for PGE concentrations, and the respective platinum group mineral association was determined by mineral liberation analysis (MLA). There is strong evidence for postcumulus changes in the chromitites. The crystal size distribution...
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Relevant physical attributes of the final flotation tailings (sample T1439) as derived from minereal liberation analysis (MLA) results. (A) Particle size distribution analysis. Comparison between barren particles (BP), particles containing monazite (PCM), and monazite grain size. (B) Liberation of monazite and total rare earth oxide (TREO) content of particles containing monazite in the tailings of Nb flotation stream: mass rate (kg/h), liberation class distribution (by free surface), and TREO weighted average (wt %, based on the particle wt %) of the different size fractions.

Relevant physical attributes of the final flotation tailings (sample T1439)... Available to Purchase

Published: 01 December 2019
Fig. 7. Relevant physical attributes of the final flotation tailings (sample T1439) as derived from minereal liberation analysis (MLA) results. (A) Particle size distribution analysis. Comparison between barren particles (BP), particles containing monazite (PCM), and monazite grain size. (B
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Comparison between the results of chemical assays and mineral liberation analysis (MLA) back-calculated assays for samples T1433 (A) and T1439 (B). TREE = total rare earth element.

Comparison between the results of chemical assays and mineral liberation an... Available to Purchase

Published: 01 December 2019
Fig. 5. Comparison between the results of chemical assays and mineral liberation analysis (MLA) back-calculated assays for samples T1433 (A) and T1439 (B). TREE = total rare earth element.
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Diagram showing amounts of Fe-rich sphalerite, derived from mineral liberation analysis, vs. Rb contents of sphalerite, derived from mass spec-trometric analyses.

Diagram showing amounts of Fe-rich sphalerite, derived from mineral liberat... Available to Purchase

Published: 01 August 2017
Fig. 5. Diagram showing amounts of Fe-rich sphalerite, derived from mineral liberation analysis, vs. Rb contents of sphalerite, derived from mass spec-trometric analyses.
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Field photos (top) and scanning electron microscope-mineral liberation analysis thin section false color maps (bottom) of all Mount Grace carbonatites volcanic lithofacies showing the common macroscopic textures, microscopic mineral textures, and the nature and distribution of the xenolithic silicate material (greens and blues) in the carbonatite matrices (oranges and reds).

Field photos (top) and scanning electron microscope-mineral liberation anal... Open Access

Published: 13 July 2024
Fig. 5. Field photos (top) and scanning electron microscope-mineral liberation analysis thin section false color maps (bottom) of all Mount Grace carbonatites volcanic lithofacies showing the common macroscopic textures, microscopic mineral textures, and the nature and distribution
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(a) Electron microscope image of a sulfide-rich slice. (b) High-resolution Mineral Liberation Analysis mineral map corresponding to a part of the picture in (a). (c) Raw microCT 2D projection of sulfide phases (medium grey) in a carbonatite matrix from sample 17 (Appendix 2). (d) Processed 2D projection slice with high contrast between the ore phases and the gangue.

(a) Electron microscope image of a sulfide-rich slice. (b) High-resolution ... Open Access

Published: 31 March 2021
Fig. 2. (a) Electron microscope image of a sulfide-rich slice. (b) High-resolution Mineral Liberation Analysis mineral map corresponding to a part of the picture in (a). (c) Raw microCT 2D projection of sulfide phases (medium grey) in a carbonatite matrix from sample 17 (Appendix 2). (d
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Cigar Lake mineralogical and geochemical ore characterization work-flow diagram (Acronyms: XRD – X-ray diffraction, SEM – scanning electron microscope, MLA – mineral liberation analysis, SWIR – shortwave near-infrared spectral device, EPMA – electron probe microanalysis, LA-ICP-MS – laser ablation inductively coupled plasma mass spectrometry).

Cigar Lake mineralogical and geochemical ore characterization work-flow dia... Available to Purchase

Published: 07 October 2021
Fig. 5. Cigar Lake mineralogical and geochemical ore characterization work-flow diagram (Acronyms: XRD – X-ray diffraction, SEM – scanning electron microscope, MLA – mineral liberation analysis, SWIR – shortwave near-infrared spectral device, EPMA – electron probe microanalysis, LA-ICP-MS – laser
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Images of Section AB2C. (A) Entire thin section in plane-polarized light, showing high modal abundance of biotite. Scale bar is 5 mm. (B) Plane-polarized light, showing a large biotite grain with many accessory mineral inclusions set in a matrix of quartz and feldspar. (C) Crossed polarized light. (D) Backscattered electron image with high contrast to highlight only biotite and apatite, monazite, xenotime and zircon with the real grain shapes. (E) Mineral liberation analysis (MLA) map with individual accessory minerals forming inclusions in biotite (dark green) identified.

Images of Section AB2C. (A) Entire thin section in plane-polarized light, s... Open Access

Published: 22 December 2021
polarized light. (D) Backscattered electron image with high contrast to highlight only biotite and apatite, monazite, xenotime and zircon with the real grain shapes. (E) Mineral liberation analysis (MLA) map with individual accessory minerals forming inclusions in biotite (dark green) identified.