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Manitou Falls Formation

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Paragenetic sequence for the Manitou Falls Formation in the alteration footprint of the McArthur River deposit indicating diagenesis, early- and late pre-mineralization alteration, mineralization-stage alteration, and post-mineralization alteration. Line thickness indicates the relative abundance of each mineral and dashed lines represent uncertainty in the timing of mineral formation. Modified after Ng et al. (2013), Fayek & Kyser (1997), and Kotzer & Kyser (1995).

Paragenetic sequence for the Manitou Falls Formation in the alteration foot... Available to Purchase

Published: 07 October 2021
Fig. 3. Paragenetic sequence for the Manitou Falls Formation in the alteration footprint of the McArthur River deposit indicating diagenesis, early- and late pre-mineralization alteration, mineralization-stage alteration, and post-mineralization alteration. Line thickness indicates the relative
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Paragenetic sequence for the Manitou Falls Formation and ore zone at McArthur River Zone 4 indicating early- and late pre-ore alteration, ore, and post-ore alteration stages. Line thickness indicates relative abundance of each mineral and dashed line represents uncertainty in the timing of mineral formation. The formation temperature of K1 kaolin is constrained by homogenization temperatures of fluid inclusions in compaction-related quartz overgrowth and euhedral quartz (Q2 and Q3 in this study), determined by Kotzer and Kyser (1995). Basement paragenesis and remaining temperatures are discussed in text.

Paragenetic sequence for the Manitou Falls Formation and ore zone at McArth... Available to Purchase

Published: 01 November 2013
Fig. 3 Paragenetic sequence for the Manitou Falls Formation and ore zone at McArthur River Zone 4 indicating early- and late pre-ore alteration, ore, and post-ore alteration stages. Line thickness indicates relative abundance of each mineral and dashed line represents uncertainty in the timing
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General mineral paragenesis for Manitou Falls Formation in the Wheeler River area. Three main stages of alteration are identified: diagenesis, hydrothermal alteration, which is subdivided into an early, a mid, and a late substage, and post-hydrothermal alteration. The thickness of the lines indicates the relative abundance. Dashed lines indicate uncertainty in the position.

General mineral paragenesis for Manitou Falls Formation in the Wheeler Rive... Available to Purchase

Published: 01 March 2010
F ig . 4. General mineral paragenesis for Manitou Falls Formation in the Wheeler River area. Three main stages of alteration are identified: diagenesis, hydrothermal alteration, which is subdivided into an early, a mid, and a late substage, and post-hydrothermal alteration. The thickness
Journal Article

Contrasting Patterns of Alteration at the Wheeler River Area, Athabasca Basin, Saskatchewan, Canada: Insights into the Apparently Uranium-Barren Zone K Alteration System Available to Purchase

Jonathan Cloutier, Kurt Kyser, Gema R. Olivo, Paul Alexandre
Journal: Economic Geology
Published: 01 March 2010
Economic Geology (2010) 105 (2): 303–324.
DOI: https://doi.org/10.2113/gsecongeo.105.2.303
...F ig . 4. General mineral paragenesis for Manitou Falls Formation in the Wheeler River area. Three main stages of alteration are identified: diagenesis, hydrothermal alteration, which is subdivided into an early, a mid, and a late substage, and post-hydrothermal alteration. The thickness...
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View PDF for article title, Contrasting Patterns of Alteration at the Wheeler River Area, Athabasca Basin, Saskatchewan, Canada: Insights into the Apparently Uranium-Barren Zone K Alteration System
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Spatial distribution of alteration minerals within the Manitou Falls Formation and Wollaston Group basement at McArthur River Zone 4. Clay distribution based on XRD analyses of the <2-μm size fraction from each drill core sample. Major alteration minerals occur in abundance greater than 5 wt %. Boundaries between alteration assemblages assigned based on changes in mineralogy and modal abundance. Basin: C1 = Mg sudoite, C2 = Mg-Fe sudoite, C3 = Fe-Mg sudoite, Dkt (K1) = dickite, ICML = illite-chlorite mixed-layer clay, I1 = illite, Kln (K1, K2) = kaolinite, T1 = magnesiofoitite. Basement: C1bsmt = clinochlore, C2bsmt = Mg sudoite, I1bsmt = illite.

Spatial distribution of alteration minerals within the Manitou Falls Format... Available to Purchase

Published: 01 November 2013
Fig. 6 Spatial distribution of alteration minerals within the Manitou Falls Formation and Wollaston Group basement at McArthur River Zone 4. Clay distribution based on XRD analyses of the <2- μ m size fraction from each drill core sample. Major alteration minerals occur in abundance greater
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Photomicrographs of typical mineral assemblages in the Manitou Falls Formation related to diagenesis, hydrothermal alteration, and post-hydrothermal alteration events. A. Diagenetic H1 hematite coats a detrital Q0 quartz grain in H2 hematite matrix. B. Remnants of H2 hematite matrix showing embayments filled with diagenetic K1 dickite and early hydrothermal alteration substage Ms1 muscovite. C. Early hydrothermal alteration substage Ms1 muscovite filling interstices in a K1 diagenetic dickite aggregate. D. Mid-hydrothermal alteration substage C1 chlorite filling corroded zones in mid-hydrothermal alteration substage T1 dravite aggregates. E. Late hydrothermal alteration substage C2 chlorite vein crosscutting mid-hydrothermal alteration substage C1 chlorite-rich matrix. F. Post-hydrothermal alteration stage K2 kaolinite pseudomorphous after late hydrothermal alteration substage C2 chlorite. XP = cross-polar light.

Photomicrographs of typical mineral assemblages in the Manitou Falls Format... Available to Purchase

Published: 01 March 2010
F ig . 5. Photomicrographs of typical mineral assemblages in the Manitou Falls Formation related to diagenesis, hydrothermal alteration, and post-hydrothermal alteration events. A. Diagenetic H1 hematite coats a detrital Q0 quartz grain in H2 hematite matrix. B. Remnants of H2 hematite matrix
Journal Article

Exploration geochemistry of surficial media over the high-grade McArthur River uranium deposit, Saskatchewan, Canada Available to Purchase

Steve R. Beyer, Kurt Kyser, Tom G. Kotzer, Kevin Ansdell, David Quirt
Published: 07 October 2021
The Canadian Mineralogist (2021) 59 (5): 913–945.
DOI: https://doi.org/10.3749/canmin.2000081
... to the ore body or alteration zone can be detected at the surface more than 500 m above the deposit. Organic-rich Ah-horizon soils, Fe-rich B-horizon soils, C-horizon soils, tree cores of Jack pine ( Pinus banksiana ), and glacially dispersed boulders of Manitou Falls Formation sandstone that host the U...
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View PDF for article title, Exploration geochemistry of surficial media over the high-grade McArthur River uranium deposit, Saskatchewan, Canada
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Journal Article

Mineralogical and Geochemical Evolution of the Unconformity-Related McArthur River Zone 4 Orebody in the Athabasca Basin, Canada: Implications of a Silicified Zone Available to Purchase

Ronald Ng, Paul Alexandre, Kurt Kyser
Journal: Economic Geology
Published: 01 November 2013
Economic Geology (2013) 108 (7): 1657–1689.
DOI: https://doi.org/10.2113/econgeo.108.7.1657
...Fig. 3 Paragenetic sequence for the Manitou Falls Formation and ore zone at McArthur River Zone 4 indicating early- and late pre-ore alteration, ore, and post-ore alteration stages. Line thickness indicates relative abundance of each mineral and dashed line represents uncertainty in the timing...
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View PDF for article title, Mineralogical and Geochemical Evolution of the Unconformity-Related McArthur River Zone 4 Orebody in the Athabasca Basin, Canada: Implications of a Silicified Zone
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Journal Article

Geological environment of the Cigar Lake uranium deposit Free

P. Bruneton
Published: 01 April 1993
Canadian Journal of Earth Sciences (1993) 30 (4): 653–673.
DOI: https://doi.org/10.1139/e93-054
..., the detrital units correspond to the Manitou Falls Formations where most of the uranium deposits are located. The Lower Pelitic unit of the Wollaston Group, which lies directly on the Archean basement, is considered to be the most favourable horizon for uranium mineralization. During the Hudsonian orogeny...
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(a) A simplified sketch of Canada showing the locations of the Athabasca and Thelon Basins, and map (b). (b) A regional map (modified from Jefferson et al. 2007) showing the stratigraphic units of the eastern Athabasca Basin overlying the Rae and Hearne Provinces. The location of the Wollaston Supergroup, the McArthur River deposit, P2 fault, and map (c) is also shown. Stratigraphic units: RD = Read Formation; MFb = Bird Member, Manitou Falls Formation; MFc = Collins Member, Manitou Falls Formation; MFd = Dunlop Member, Manitou Falls Formation. (c) A plan view map [modified from Adlakha et al. (2017) and updated according to Bray et al. (2018)] of the unconformity showing the P2 fault, mineralized zones of the McArthur River deposit (from southwest to northeast: McA South 1, Zones 4-1, McA North 1, Zone A, McA North 2, Zone B, McA North 3, and McA North 4), low-grade (P2 Main) and unmineralized areas. Surface drillhole collar locations are indicated by a circle, and next to each drillhole collar is a list of samples that were collect from that location (see Table 1). Samples collected from drillholes collared in the underground mine are indicated with an arrow pointing to its general location (i.e., mineralized zone). (Color online.)

( a ) A simplified sketch of Canada showing the locations of the Athabasca ... Available to Purchase

Published: 01 December 2020
of the Wollaston Supergroup, the McArthur River deposit, P2 fault, and map ( c ) is also shown. Stratigraphic units: RD = Read Formation; MFb = Bird Member, Manitou Falls Formation; MFc = Collins Member, Manitou Falls Formation; MFd = Dunlop Member, Manitou Falls Formation. ( c ) A plan view map [modified from
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Cross section through the Centennial deposit along L10+00N looking north. The lighter shading for each rock type represents sudoite-clinochore, and illite-sudoite alteration assemblages, which overprint the original rock. Question marks indicate extrapolation of rock types and alteration not constrained by drill holes. The location of the cross section is shown in Figure 3. MFb = Manitou Falls Formation (Bird member), MFw = Manitou Falls Formation (Warnes member), the boundary between the MFb and MFw is located at the top of the “Conglomeratic Layer.” ASL = above sea level. Note that the unconformity is approximately 800 to 830 m below the surface.

Cross section through the Centennial deposit along L10+00N looking north. T... Available to Purchase

Published: 01 May 2014
not constrained by drill holes. The location of the cross section is shown in Figure 3 . MFb = Manitou Falls Formation (Bird member), MFw = Manitou Falls Formation (Warnes member), the boundary between the MFb and MFw is located at the top of the “Conglomeratic Layer.” ASL = above sea level. Note
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Location and regional geologic framework of the Athabasca Basin (after Card et al., 2007a, b; Jefferson et al., 2007; Ramaekers et al., 2007). Abbreviations: AB = Athabasca Basin, C = Carswell…, D = Douglas, FP = Fair Point, LL = Locker Lake, LZ = Lazenby Lake, MF = Manitou Falls, O = Otherside, RD = Read, S = Smart, S/M = undivided Smart or Manitou Falls formations, W = Wolverine Point. Red stars represent major uranium deposits.

Location and regional geologic framework of the Athabasca Basin (after Car... Available to Purchase

Published: 01 March 2017
, O = Otherside, RD = Read, S = Smart, S/M = undivided Smart or Manitou Falls formations, W = Wolverine Point. Red stars represent major uranium deposits.
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Conserved element scatterplot of TiO2 plotted against Zr for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.

Conserved element scatterplot of TiO 2 plotted against Zr for 4604 Read an... Available to Purchase

Published: 22 November 2019
Fig. 30. Conserved element scatterplot of TiO 2 plotted against Zr for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.
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GER diagram plotting (Na + K)/Al against Mg/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.

GER diagram plotting (Na + K)/Al against Mg/Al for 4604 Read and Manitou Fa... Available to Purchase

Published: 22 November 2019
Fig. 32. GER diagram plotting (Na + K)/Al against Mg/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.
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GER diagram plotting (Na + K)/Al against Fe/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.

GER diagram plotting (Na + K)/Al against Fe/Al for 4604 Read and Manitou Fa... Available to Purchase

Published: 22 November 2019
Fig. 33. GER diagram plotting (Na + K)/Al against Fe/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.
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GER diagram plotting (Na + K)/Al against Na/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.

GER diagram plotting (Na + K)/Al against Na/Al for 4604 Read and Manitou Fa... Available to Purchase

Published: 22 November 2019
Fig. 34. GER diagram plotting (Na + K)/Al against Na/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.
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GER diagram plotting (Na + K)/Al against K/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.

GER diagram plotting (Na + K)/Al against K/Al for 4604 Read and Manitou Fal... Available to Purchase

Published: 22 November 2019
Fig. 35. GER diagram plotting (Na + K)/Al against K/Al for 4604 Read and Manitou Falls Formation samples from above the Phoenix unconformity U deposit, Saskatchewan. Colours correlate with the density of samples across the graph.
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Schematic cross section of geology through the Millennium deposit displaying the main lithological units discussed in the paper, including; the Mother Fault (a), the graphitic Marker Fault (b) and the main B1 Fault (c). MF refers to Manitou Falls Formation.

Schematic cross section of geology through the Millennium deposit displayin... Available to Purchase

Published: 07 September 2012
Figure 2. Schematic cross section of geology through the Millennium deposit displaying the main lithological units discussed in the paper, including; the Mother Fault (a), the graphitic Marker Fault (b) and the main B 1 Fault (c). MF refers to Manitou Falls Formation.
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Molar Al-Fe-Mg ternary plot of tourmaline group minerals from the Manitou Falls Formation at McArthur River Zone 4 and composition of end-member schorl, dravite, foitite (Deer et al., 1966), and magnesiofoitite (Rosenberg and Foit, 2006).

Molar Al-Fe-Mg ternary plot of tourmaline group minerals from the Manitou F... Available to Purchase

Published: 01 November 2013
Fig. 8 Molar Al-Fe-Mg ternary plot of tourmaline group minerals from the Manitou Falls Formation at McArthur River Zone 4 and composition of end-member schorl, dravite, foitite ( Deer et al., 1966 ), and magnesiofoitite ( Rosenberg and Foit, 2006 ).
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C1 Chondrite-normalized spider diagrams (McDonough &amp; Sun 1995). (A) Median REE concentrations in APS minerals, apatite, APS-altered monazite, and detrital zircon from LA-ICP-MS. (B) Median REE concentrations in Manitou Falls Formation sandstones from total digestion.

C1 Chondrite-normalized spider diagrams (McDonough & Sun 1995). (A) Med... Available to Purchase

Published: 07 October 2021
Fig. 17. C1 Chondrite-normalized spider diagrams (McDonough & Sun 1995). (A) Median REE concentrations in APS minerals, apatite, APS-altered monazite, and detrital zircon from LA-ICP-MS. (B) Median REE concentrations in Manitou Falls Formation sandstones from total digestion.