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Journal Article

Fractionation and Enrichment Patterns in White Mica from Li Pegmatites of the Wekusko Lake Pegmatite Field, Manitoba, Canada Available to Purchase

David Benn, Tania Martins, Robert Linnen
Published: 21 February 2023
The Canadian Mineralogist (2022) 60 (6): 933–956.
DOI: https://doi.org/10.3749/canmin.2200003
...David Benn; Tania Martins; Robert Linnen ABSTRACT The Wekusko Lake pegmatite field in central Manitoba, Canada, is known for its multiple pegmatite dike occurrences, most remarkably its Li-rich pegmatites of economic importance. The Li-rich pegmatites from Wekusko Lake are the focus of this study...
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View PDF for article title, Fractionation and Enrichment Patterns in White Mica from Li Pegmatites of the <span class="search-highlight">Wekusko</span> <span class="search-highlight">Lake</span> Pegmatite Field, Manitoba, Canada
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Journal Article

Evaluating portable Raman spectrometers for use in exploration of pegmatite dikes, Wekusko Lake, Manitoba Available to Purchase

David Benn, Robert Linnen, Tania Martins
Published: 30 September 2019
The Canadian Mineralogist (2019) 57 (5): 711–713.
DOI: https://doi.org/10.3749/canmin.AB00001
... Group in the Wekusko Lake pegmatite field, Manitoba ( FAR Resources Ltd. 2017 , 2018 , 2019 , Martins et al . 2017). The Wekusko Lake pegmatite field is located in the 1.91–1.83 Ga Flin Flon-Glennie complex ( Connors et al . 2002 ) of the Paleoproterozoic Trans-Hudson orogeny. The Flin Flon-Glennie...
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View PDF for article title, Evaluating portable Raman spectrometers for use in exploration of pegmatite dikes, <span class="search-highlight">Wekusko</span> <span class="search-highlight">Lake</span>, Manitoba
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Journal Article

Coeval sedimentation, magmatism, and fold-thrust belt development in the Trans-Hudson Orogen: geochronological evidence from the Wekusko Lake area, Manitoba, Canada Free

Kevin M Ansdell, Karen A Connors, Richard A Stern, Stephen B Lucas
Published: 01 August 1999
Canadian Journal of Earth Sciences (1999) 36 (2): 293–312.
DOI: https://doi.org/10.1139/e98-082
...Kevin M Ansdell; Karen A Connors; Richard A Stern; Stephen B Lucas Abstract Lithological and structural mapping in the east Wekusko Lake area of the Flin Flon Belt, Trans-Hudson Orogen, suggested an intimate relationship between magmatism, fluvial sedimentation, and initiation of fold and thrust...
Add to Citation Manager for Coeval sedimentation, magmatism, and fold-thrust belt development in the Trans-Hudson Orogen: geochronological evidence from the <span class="search-highlight">Wekusko</span> <span class="search-highlight">Lake</span> area, Manitoba, Canada
Journal Article

Coeval sedimentation, magmatism, and fold-thrust development in the Trans-Hudson Orogen: propagation of deformation into an active continental arc setting, Wekusko Lake area, Manitoba Free

Karen A Connors, Kevin M Ansdell, Stephen B Lucas
Published: 01 August 1999
Canadian Journal of Earth Sciences (1999) 36 (2): 275–291.
DOI: https://doi.org/10.1139/e98-090
...Karen A Connors; Kevin M Ansdell; Stephen B Lucas Abstract Early structures in the southeastern part of the Trans-Hudson Orogen (THO), Wekusko Lake area, Manitoba, comprise northwest-verging folds and a set of steep, southeast-dipping faults that occur at a low angle to bedding. Kinematic...
Add to Citation Manager for Coeval sedimentation, magmatism, and fold-thrust development in the Trans-Hudson Orogen: propagation of deformation into an active continental arc setting, <span class="search-highlight">Wekusko</span> <span class="search-highlight">Lake</span> area, Manitoba
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Outcrop photographs of spodumene-mineralized pegmatite in the Wekusko Lake pegmatite field. (a) Green Bay group. Spodumene crystals (black arrows) within the dike’s intermediate/central zones and contact with the wall zone (within red dashed lines). (b) Sherritt-Gordon group. Spodumene mineralization with crystals up to 50 cm in length on pegmatite dikes (black arrows). (c, d) Violet-Thompson group. The Thompson Brothers pegmatite dike contains a pervasive mineral fabric (black dashed lines) and post- to late-crystallization shear planes (red dashed lines) that slightly rotate the spodumene mineral fabric (black arrows).

Outcrop photographs of spodumene-mineralized pegmatite in the Wekusko Lake ... Available to Purchase

Published: 28 December 2023
Fig. 3. Outcrop photographs of spodumene-mineralized pegmatite in the Wekusko Lake pegmatite field. (a) Green Bay group. Spodumene crystals (black arrows) within the dike’s intermediate/central zones and contact with the wall zone (within red dashed lines). (b) Sherritt-Gordon group. Spodumene
Image
Simplified geological map of the Wekusko Lake pegmatite field (Manitoba, Canada), modified from Benn et al. (2018a).

Simplified geological map of the Wekusko Lake pegmatite field (Manitoba, Ca... Available to Purchase

Published: 21 February 2023
Fig. 2. Simplified geological map of the Wekusko Lake pegmatite field (Manitoba, Canada), modified from Benn et al . (2018a) .
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Geological map of the Snow Lake – File Lake – Wekusko lakes area, including isograds from authors cited in Kraus and Menard (1997). Geochronological results refer to age of emplacement of granitic rocks (from Gordon et al. 1990; Bailes et al. 1991; David et al. 1996). Faults: BCSZ, Berry Creek shear zone; BeLF, Beltz Lake fault; BLF, Birch Lake fault; CBF, Crowduck Bay fault; LLF, Loonhead Lake fault; MLF, Morton Lake fault; MRF, McLeod Road fault; RLF, Roberts Lake fault; SLF, Snow Lake fault. Plutons (P), plutonic complexes (C), and gneiss domes (GD): BLC, Batty Lake; BLP, Bujarski Lake; HLGD, Herblet Lake; HLP, Ham Lake; NBP, Nelson Bay; PLGD, Pulver Lake; RiLP, Richard Lake; RLC, Rex Lake; RLP, Reed Lake; SLGD, Squall Lake; SLP, Sneath Lake; TLP, Tramping Lake; WLP, Wekusko Lake. Mineral abbreviations after Kretz (1983).

Geological map of the Snow Lake – File Lake – Wekusko lakes area, including... Available to Purchase

Published: 10 February 2000
Fig. 2. Geological map of the Snow Lake – File Lake – Wekusko lakes area, including isograds from authors cited in Kraus and Menard ( 1997 ). Geochronological results refer to age of emplacement of granitic rocks (from Gordon et al. 1990 ; Bailes et al. 1991 ; David et al. 1996 ). Faults: BCSZ
Journal Article

Structural Controls on the Origin and Emplacement of Lithium-Bearing Pegmatites Available to Purchase

David Silva, Lee Groat, Tânia Martins, Robert Linnen
Published: 28 December 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (6): 1053–1062.
DOI: https://doi.org/10.3749/2300045
...Fig. 3. Outcrop photographs of spodumene-mineralized pegmatite in the Wekusko Lake pegmatite field. (a) Green Bay group. Spodumene crystals (black arrows) within the dike’s intermediate/central zones and contact with the wall zone (within red dashed lines). (b) Sherritt-Gordon group. Spodumene...
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View PDF for article title, Structural Controls on the Origin and Emplacement of Lithium-Bearing Pegmatites
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Simplified regional geologic map of the Snow Lake subdomain (after Galley et al. 2007) and location of pegmatite groups in Wekusko Lake pegmatite field. Pegmatites dikes symbols: triangle – Green Bay group; circle – Sherritt-Gordon group; hexagon – Violet-Thompson group. Abbreviations: HLF – Herb Lake fault; RLF – Robert Lake fault; WL – Wekusko Lake; SLSD – Snow Lake subdomain; FFA – Flin Flon arc assemblage; SC – Superior craton; SBZ – Superior boundary zone. Coordinates NAD83/UTM zone 14N.

Simplified regional geologic map of the Snow Lake subdomain (after Galley ... Available to Purchase

Published: 28 December 2023
Fig. 2. Simplified regional geologic map of the Snow Lake subdomain (after Galley et al. 2007 ) and location of pegmatite groups in Wekusko Lake pegmatite field. Pegmatites dikes symbols: triangle – Green Bay group; circle – Sherritt-Gordon group; hexagon – Violet-Thompson group. Abbreviations
Image
Primitive mantle-normalized incompatible-element diagram for the dolomite silicocarbonatite compared to average magnesiocarbonatite (Woolley and Kempe, 1989); average magnesiocarbonatite (Chakhmouradian et al., 2009) and the Manitoba dolomite carbonatite at Wekusko Lake (Chakhmouradian et al., 2009); (b) Chondrite-normalized REE diagram for the dolomite silicocarbonatite compared to REE data from average magnesiocarbonatite (Woolley and Kempe, 1989); average magnesiocarbonatite (Chakhmouradian et al., 2009); the Manitoba dolomite carbonatite at Wekusko Lake (Chakhmouradian et al., 2009); the dolomite carbonatites from Veseloe, Transbaikalia and Pogranichoe, Russia (Doroshkevich et al., 2007a,b); and the dolomite carbonatites of Sarfartoq, southwest Greenland (Secher and Larsen 1980). Normalization data from Sun and McDonough (1989).

Primitive mantle-normalized incompatible-element diagram for the dolomite s... Available to Purchase

Published: 01 April 2012
F ig . 5. Primitive mantle-normalized incompatible-element diagram for the dolomite silicocarbonatite compared to average magnesiocarbonatite ( Woolley and Kempe, 1989 ); average magnesiocarbonatite ( Chakhmouradian et al. , 2009 ) and the Manitoba dolomite carbonatite at Wekusko Lake
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Metamorphic isograds of the Snow Lake Allochthon (after Gordon 1989). Mineral abbreviations after Kretz (1983). WL, Wekusko Lake.

Metamorphic isograds of the Snow Lake Allochthon (after Gordon 1989 ). Min... Available to Purchase

Published: 10 February 2000
Fig. 5. Metamorphic isograds of the Snow Lake Allochthon (after Gordon 1989 ). Mineral abbreviations after Kretz ( 1983 ). WL, Wekusko Lake.
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Equal-area projections (lower hemisphere, Schmidt net) of structural data for major shear zones (Fig. 3). (a, b) Berry Creek shear zone, Northwest Wekusko Lake segment (a) and Tramping Lake pluton segment (b). (c) McLeod Road fault zone in domain B.

Equal-area projections (lower hemisphere, Schmidt net) of structural data f... Available to Purchase

Published: 10 February 2000
Fig. 7. Equal-area projections (lower hemisphere, Schmidt net) of structural data for major shear zones (Fig.  3 ). ( a , b ) Berry Creek shear zone, Northwest Wekusko Lake segment ( a ) and Tramping Lake pluton segment ( b ). ( c ) McLeod Road fault zone in domain B .
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Muscovite fractionation plots (K/Rb versus Cs) of Dike 1 from Wekusko Lake compared to the Tanco pegmatite, Manitoba (MAC Depository of Unpublished Data 2006), pegmatites from the Iberian Peninsula (Roda et al. 1995, Martins et al. 2012, Garate-Olave et al. 2018), and pegmatites from Red Cross Lake in northern Manitoba (Černý et al. 2012).

Muscovite fractionation plots (K/Rb versus Cs) of Dike 1 from Wekusko Lak... Available to Purchase

Published: 21 February 2023
Fig. 14. Muscovite fractionation plots (K/Rb versus Cs) of Dike 1 from Wekusko Lake compared to the Tanco pegmatite, Manitoba ( MAC Depository of Unpublished Data 2006 ), pegmatites from the Iberian Peninsula ( Roda et al . 1995 , Martins et al . 2012 , Garate-Olave et al . 2018
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Schematic model for the structurally controlled emplacement of lithium-mineralized dikes in the Wekusko Lake pegmatite field. Pegmatite dikes are temporally related to brittle-ductile deformation events and structurally related to major shear zones and faults. Pegmatite dike emplacement is associated with three host rock dilation modes: Sherritt-Gordon group, tension gashes; Green Bay group, tension gashes en echelon; and Violet-Thompson group, pull-apart shearing. Coordinates NAD83/UTM zone 14N.

Schematic model for the structurally controlled emplacement of lithium-mine... Available to Purchase

Published: 28 December 2023
Fig. 4. Schematic model for the structurally controlled emplacement of lithium-mineralized dikes in the Wekusko Lake pegmatite field. Pegmatite dikes are temporally related to brittle-ductile deformation events and structurally related to major shear zones and faults. Pegmatite dike emplacement
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(a) F1 fold in Burntwood group crosscut by undeformed, local apophysis of the Wekusko Lake granite. (b) Z-asymmetric F2 fold with refracted axial-plane S2; Burntwood group in domain E. Note the S2-parallel quartz veins that developed in response to S2-parallel slip (see Kraus and Williams 1998). Pencil tip in the upper right for scale. (c) L2 crenulation lineation on S0 tightened around grains of staurolite (St); Burntwood group in domain B. (d) S1 overgrown by train of kyanite (Ky) and folded by a Z-asymmetrical F2; hydrothermally altered pillow basalt in domain A. An axial-plane S2 is well developed. (e) Photomicrograph of basal sections of ferroan-pargasitic hornblende porphyroblasts (determined with microprobe) aligned parallel to S2 in mafic volcanic rock, overprinting the F1 Berry Creek shear zone on northwestern Wekusko Lake. View is down the northeasterly plunge of the hornblende c axes, which are parallel to the composite L1–2 (see Fig. 7a). Long edge of photomicrograph is 3.7 mm. Chl, chlorite; Hbl, hornblende. (f) Gneissosity enveloping garnet (Grt) in highly metamorphosed felsic volcanic rock; domain D. (g) Zoned calc-silicate boudin and crosscutting S2, both overprinted by Z-asymmetrical F3 fold; Burntwood group in domain A. Note the opposite asymmetry of S2 and F3 with respect to S0. Pencil in the lower left for scale. (h) F4 kink band overprinting S2; Burntwood group in domain E.

( a ) F 1 fold in Burntwood group crosscut by undeformed, local apophysis ... Available to Purchase

Published: 10 February 2000
Fig. 4. ( a ) F 1 fold in Burntwood group crosscut by undeformed, local apophysis of the Wekusko Lake granite. ( b ) Z-asymmetric F 2 fold with refracted axial-plane S 2 ; Burntwood group in domain E. Note the S 2 -parallel quartz veins that developed in response to S 2 -parallel slip (see
Journal Article

Structural development of the Snow Lake Allochthon and its role in the evolution of the southeastern Trans-Hudson Orogen in Manitoba, central Canada Available to Purchase

Jürgen Kraus, Paul F. Williams
Published: 10 February 2000
Canadian Journal of Earth Sciences (2000) 36 (11): 1881–1899.
DOI: https://doi.org/10.1139/e99-014
...Fig. 2. Geological map of the Snow Lake – File Lake – Wekusko lakes area, including isograds from authors cited in Kraus and Menard ( 1997 ). Geochronological results refer to age of emplacement of granitic rocks (from Gordon et al. 1990 ; Bailes et al. 1991 ; David et al. 1996 ). Faults: BCSZ...
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View PDF for article title, Structural development of the Snow <span class="search-highlight">Lake</span> Allochthon and its role in the evolution of the southeastern Trans-Hudson Orogen in Manitoba, central Canada
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Oxygen and carbon isotope ratios of the Beara dolomite carbonatite pipe (in relation to SMOW and PDB). The abbreviation PIC is the primary igneous carbonatite box and K &amp; H represent the isotopic compositions of primary unaltered carbonatites as proposed by Taylor et al. (1967) and Keller and Hoefs (1995) respectively. Added for comparison are the isotopic data from (1) the Manitoba mantle-derived dolomite carbonatite at Wekusko Lake (Chakhmouradian et al., 2009); (2) the mantle-derived dolomite carbonatites of Veseloe and Pogranichoe (Doroshkevich et al., 2007a,b); (3) carbonatites from a selection of Brazilian alkaline complexes (Jacupiranga, Araxa, Catalao, Tapira and Mato Preto) (Santos and Clayton, 1995); (4) monchiquites from the Transdanubian Range of Hungary (Demény and Harangi, 1996); and (5) the unaltered mantle-derived aillikites of Aillik Bay, Canada (Tappe et al., 2006).

Oxygen and carbon isotope ratios of the Beara dolomite carbonatite pipe (in... Available to Purchase

Published: 01 April 2012
) and Keller and Hoefs ( 1995 ) respectively. Added for comparison are the isotopic data from (1) the Manitoba mantle-derived dolomite carbonatite at Wekusko Lake ( Chakhmouradian et al. , 2009 ); (2) the mantle-derived dolomite carbonatites of Veseloe and Pogranichoe (Doroshkevich et al. , 2007 a , b
Journal Article

A mantle-derived dolomite silicocarbonatite from the southwest coast of Ireland Available to Purchase

A. E. Brady, K. R. Moore
Published: 01 April 2012
Mineralogical Magazine (2012) 76 (2): 357–376.
DOI: https://doi.org/10.1180/minmag.2012.076.2.06
...F ig . 5. Primitive mantle-normalized incompatible-element diagram for the dolomite silicocarbonatite compared to average magnesiocarbonatite ( Woolley and Kempe, 1989 ); average magnesiocarbonatite ( Chakhmouradian et al. , 2009 ) and the Manitoba dolomite carbonatite at Wekusko Lake...
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View PDF for article title, A mantle-derived dolomite silicocarbonatite from the southwest coast of Ireland
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A reinterpretation of the Snow Lake gold camp, Trans-Hudson Orogen, Canada: the use of cleavages as markers to correlate structures across deformed terranes Available to Purchase

K.E. Rubingh, B. Lafrance, H.L. Gibson
Published: 05 November 2020
Canadian Journal of Earth Sciences (2021) 58 (7): 610–639.
DOI: https://doi.org/10.1139/cjes-2020-0135
... likely occurred early during the same event. Thrusting was largely coeval with the emplacement of ca. 1840–1830 Ma dioritic to granitic calc-alkaline stocks, which both predate and postdate the formation of the regional S 1 cleavage. This is exemplified by the 1834 +8/−6 Ma Wekusko Lake pluton...
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View PDF for article title, A reinterpretation of the Snow <span class="search-highlight">Lake</span> gold camp, Trans-Hudson Orogen, Canada: the use of cleavages as markers to correlate structures across deformed terranes
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Thematic Issue on Critical Minerals: The Canadian Mineralogist Keeping up with the Hot Topics Available to Purchase

Published: 21 February 2023
The Canadian Mineralogist (2022) 60 (6): 851–852.
DOI: https://doi.org/10.3749/canmin.INT013
... hydrothermal replacement. The paper by Benn et al . (2022) focuses on Li-pegmatites of the Wekusko Lake pegmatite field of Trans-Hudson age in central Manitoba, Canada. The research presented by these authors provides new insights into the differentiation processes that generated trace element enrichments...
View PDF for article title, Thematic Issue on Critical Minerals: The Canadian Mineralogist Keeping up with the Hot Topics
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