Manitoba

Growth, Enterprise and Trade

Mineral Commodities in Manitoba

Gold in Manitoba

Following the first discovery in 1890, gold mining has taken place almost continuously in Manitoba for over 100 years. Gold has been produced from quartz-carbonate vein (orogenic) deposits and as byproduct from volcanogenic massive sulphide (VMS) deposits. Significant orogenic gold deposits have been discovered in Archean and Paleoproterozoic greenstone belts in Manitoba. The bulk of past-production comes from the world-class (5.6 Moz) deposit at Rice Lake in the Superior province and the major (2.5 Moz) deposit at Snow Lake in the Trans-Hudson orogen.

Significant recent discoveries, brought about by focused exploration in the Rice Lake, Flin Flon and Lynn Lake belts, underscore the residual potential of established gold camps in Manitoba. Greenfields exploration successes in the Stull Lake belt, host to the 3.6 Moz Monument Bay deposit, also highlight the exceptional untapped potential of Manitoba’s major greenstone belts, which remain underexplored compared to those of other Canadian jurisdictions.

 

2016 HIGHLIGHTS

  • Alamos Gold Inc. continued its prefeasibility study on the Lynn Lake gold project

  • Klondex Mines Ltd. acquired the Rice Lake mine and mill complex at Bissett and resumed development work
    and test mining at the renamed “True North” mine

  • Yamana Gold Inc. continued to expand gold-tungsten mineralization at its Monument Bay project

  • Hudbay Minerals Inc. purchased the New Britannia gold mine and mill, and completed a bulk sample
    of the Au-rich zone of the Lalor deposit

 

Figure 1: Geological map of Manitoba showing locations of selected gold deposits

 

LYNN LAKE GREENSTONE BELT

The Paleoproterozoic Lynn Lake belt extends for 150 km in an east-west direction, on strike to the west with the La Ronge belt in Saskatchewan. The Lynn Lake belt contains five significant gold deposits along two major trends, accounting for a total mineral resource of approximately 5 Moz. The MacLellan and Farley Lake deposits are hosted by the Agassiz metallotect – an assemblage of picrite flows, felsic volcanic rocks and iron formation that extends along strike in excess of 40 km. In contrast, the Burnt Timber and Linkwood deposits are hosted by a crustal scale break, referred to as the Johnson shear zone, which follows the south margin of the belt for over 100 km along strike. Both major metallotects have seen only local systematic exploration.

Figure 2: Geological map of the Lynn Lake belt

 

FLIN FLON GREENSTONE BELT

Although principally recognized as one of the world’s premier VMS districts, the Paleoproterozoic Flin Flon belt, situated in the internides of the Trans-Hudson orogen, is also host to several significant orogenic gold deposits. Major deposits of this type occur within thrust-imbricated panels of metavolcanic and metasedimentary rocks along the interface between the Flin Flon belt and the south flank of the metasedimentary Kisseynew domain. In Manitoba, this metallotect extends along strike for over 150 km and includes the past-producing Snow Lake deposit (2.5 Moz), which is hosted by a discordant fault in the immediate hanging wall of a major thrust.

Figure 3: Geological map of the Flin Flon belt and south flank of Kisseynew domain

 

OXFORD–STULL DOMAIN

The Oxford–Stull domain is situated in the northwest portion of the Archean Superior province – one of the most prolific Archean cratons worldwide for orogenic gold deposits. The domain is characterized by an array of sinuous, laterally extensive greenstone belts containing a number of significant orogenic gold deposits and occurrences, most notably the Monument Bay deposit near Stull Lake, which has a total resource of 3.6 Moz, with added potential for economic byproduct tungsten. Major deposits in the Oxford–Stull domain are spatially associated with a crustal scale ‘break’ – the Stull–Wunnummin fault – that defines the south boundary of the domain over a distance in excess of 250 km, yet has been subject to minimal systematic exploration.

Figure 4: Geological map of the northwest Superior province

 

RICE LAKE GREENSTONE BELT

The Archean Rice Lake belt defines the western extent of the prolific Uchi domain of the western Superior province, approximately 100 km along strike to the west of the world-class Red Lake gold camp in Ontario. The Rice Lake belt includes several significant gold deposits, including the Rice Lake deposit at Bissett, which has total gold endowment in excess of 5.6 Moz (resources and past production), making it the largest gold deposit discovered to date in Manitoba. Within the Rice Lake belt, auriferous vein systems are associated with brittle-ductile shear zones that splay southward off the crustal scale Wanipigow fault. Toward the west, the Rice Lake belt and Wanipigow fault remain unexplored beneath a thin cover of Paleozoic sedimentary rocks.

Figure 5: Geological map of the Rice Lake greenstone belt

 

SELECTED GOLD DEPOSITS IN MANITOBA

Deposit
Geological
Domain
Ownership
Discovery
Production
Past-production
Resources
(measured and indicated)
Resources
(inferred)
     
(year)
(years)
(Mt)
(g Au/t)
(Moz)
(Mt)
(g Au/t)
(Moz)
(Mt)
(g Au/t)
(Moz)
Archean Superior province
True North Uchi Klondex Mines Ltd.
1911
2006-2015
1997-2001
1932-1968
8.28
6.9
1.83
1.58
7.7
0.38
2.53
5.65
0.46
Central Manitoba Uchi Bison Gold Resources Inc.
1924
1928-1938
0.44
12.6
0.16
Gunnar Uchi Uchi Klondex Mines Ltd.
1921
1936-1941
0.26
11.9
0.10
Ogama-Rockland Uchi Bison Gold Resources Inc.
1915
1948-1951
0.14
11.2
0.05
1.30
8.2
0.34
Monument Bay Oxford-Stull Yamana Gold Inc.
1986
36.58
1.52
1.79
41.95
1.32
1.78
Little Stull* Oxford-Stull BWR Exploration Inc.
1986
0.75
9.3
0.22
Gods Lake Oxford-Stull J.C. Campbell
1932
1935-1943
0.49
10.2
0.16
Rusty Zone* Oxford-Stull Alto Ventures Ltd.
1986
0.80
6.0
0.15
High Rock Island* Island Lake Torch River Resources Ltd.
1934
0.40
9.0
0.12
Paleoproterozoic Trans-Hudson orogen
MacLellan Lynn Lake Alamos Gold Inc.
1955
1986-1989
0.90
5.4
0.14
32.40
1.9
1.94
1.90
2.0
0.12
Farley Lake Lynn Lake Alamos Gold Inc.
1947
1997-1999
1.71
4.2
0.21
5.91
3.2
0.61
4.36
2.9
0.40
Burnt Timber Lynn Lake Alamos Gold Inc.
1988
1993-1996
0.89
2.8
0.08
1.02
1.4
0.05
23.40
1.0
0.78
Linkwood Lynn Lake Alamos Gold Inc.
1937
0.98
1.2
0.04
21.00
1.2
0.78
Last Hope Lynn Lake Alamos Gold Inc.
1937
0.20
5.8
0.04
1.07
5.3
0.18
Snow Lake Flin Flon Hudbay Minerals Inc.
1925
1995-2005
1949-1958
10.80
3.7
1.41
4.79
3.8
0.59
0.93
3.8
0.11
Lalor Gold Zone Flin Flon Hudbay Minerals Inc.
2007
3.47
4.8
0.52
3.52
5.5
0.6
Tartan Flin Flon Satori Resources Inc.
1945
1987-1989
0.25
5.8
0.04
1.00
4.0
0.13
1.90
3.9
0.24
Rex Laguna Flin Flon P.C. Dunlop
1914
1936-1940
1918-1926
0.11
16.7
0.06
No. 3 Zone Flin Flon Hudbay Minerals Inc.
1946
1995-1996
0.22
3.9
0.03
0.68
6.4
0.14
0.43
5.0
0.07
Puffy Lake Kisseynew Minnova Corp.
1960
1987-1989
0.35
5.8
0.03
1.65
5.4
0.29
2.18
6.0
0.42
Squall Lake Kisseynew Hudbay Minerals Inc.
1945
0.44
5.3
0.07

* Historical resource (pre-dates NI 43-101); users should verify critical information
ABBREVIATIONS: g Au/t, grams gold per tonne; Mt, million tonnes; Moz, million ounces

 

ADVANCED PROJECTS

  • Lalor Gold Zone (Hudbay Minerals Inc.): 1.12 Moz. resource

  • True North (Klondex Mines Ltd.): 1.7 Moz. resource

  • Lynn Lake (Alamos Gold Inc.): 4.9 Moz. resource

  • Monument Bay (Yamana Gold Inc.): 3.6 Moz. resource

  • Puffy Lake (Minnova Corp.): 0.7 Moz. resource

  • Snow Lake (Hudbay Minerals Inc.): 0.7 Moz. resource

  • Tartan (Satori Resources Inc.): 0.4 Moz. resource

 

MANITOBA EXPLORATION AND MINING ADVANTAGES

  • Diverse, dynamic $59 billion economy — one of Canada’s strongest and most stable

  • Flexible transportation infrastructure for shipping by rail, air, road and sea

  • Supportive business climate and highly competitive mining tax regime

  • Easily accessible geoscience and exploration data

  • World-class deposits and high mineral potential in large underexplored regions

For more information, visit the Manitoba Mining Sector Profile.

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