Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F05SW00012

Record: MDI52F05SW00012

General

Mineral Record Identification
Record Name(s) Dogpaw Lake - 1985, Canadian Arrow Prospect - 1989, Martin-Kenty - 1985, West Cedartree Gold Project - 2013, Cameron Gold Camp Project - 2013
Related Record Type Simple
Related Record(s)
Record Status Developed Prospect With Reported Reserves or Resources
Date Created 1985-Sep-06
Date Last Modified 2021-Dec-13
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Dogpaw Lake Area

Latitude: 49° 19' 57.98"    Longitude: -93° 52' 35.66"

UTM Zone: 15    Easting: 436314   Northing: 5464819    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F05SW

Point Location Description: Collar location of DDH DP08-94, from Chalice Gold’s 2014 NI 43-101 report

Location Method: Conversion from MDI

Access Description: The Dogpaw Gold Deposit is located about 113 km by road (Highway 17 / Highway 71 / Cameron Lake Road) south of Kenora, and 158 kilometres by road (Highway 11 / Highway 71 / Cameron Lake Road) north of Fort Frances. Travel along the access road is restricted to holders of permits issued by the Ministry of Natural Resources (MNR) in Kenora. It is permit requirement to use two-way radios when travelling along the road as there can be additional traffic associated with logging activities conducted regularly in the surrounding area.



Exploration History

Gold was originally discovered at what is now known No 1 zone at the Dogpaw Gold Deposit by a prospector named Dalby in about 1900. After Dalby’s initial work, the claims were allowed to lapse. 1943: J. Kent and R. Martin, prospecting for Noranda Mines, rediscovered the No. 1 zone and staked the present claim group. 1944: Noranda undertook prospecting and several other gold occurrences were found. Noranda drilled 82 DDH totalling 2769 m and calculated a mineral resource estimate. The claims were patented. 1960: Noranda sold the patented claims to Consolidated Golden Arrow, who conducted prospecting. 1961: Golden Arrow drilled 32 DDH totalling 2679 m. 1974: Noranda mapped the property and conducted a magnetometer survey. 1987: Nuinsco optioned the property in December. 1988: Nuinsco drilled 19 DDH totalling 2332 m and conducted stripping on the No. 1 and 2 veins, released a mineral resource estimate. 1995: Larchex Mining Exploration Inc. built an all-weather road to the vein No. 1 and 2 site, and completed stripping and mapping of the vein system. 1996: a 500 t bulk sample was sent to the Noranda Home smelter. 1997: Houston Lake optioned the property from Canadian Arrow Mines (formerly Consolidated Golden Arrow). 1997: Houston Lake drilled 41 DDH totalling 14,175 m and conducted extensive stripping and channel sampling as well as IP geophysical surveys. 2007: Houston Lake drilled 17 DDH totalling 8398 m. 2008: Houston Lake drilled 44 DDH totalling 16,154 m. 2013: Coventry Resources acquired the property from Houston Lake, and released a mineral resource estimate. Coventry and Chalice Gold Mines merged in September. 2014: Chalice released an updated mineral resource estimate. 2016: First Mining Finance Corp acquired the property from Chalice.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
2.28581 52F05SE2007 52F05SE2007
2.7325 52F05SE0086 52F05SE0086
63.4086 52F05SW0105 52F05SW0105
63.3341 52F05SW0144 52F05SW0144

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Kakagi-Rowan Lakes

Geological Age: Archean  



Geology Comments

Feb 27, 2015 (Therese Pettigrew) - The area of the West Cedartree Gold Project is dominated by the crustal-scale, southeast-striking and northwest-dipping Cameron-Pipestone Fault, which extends over a strike length of greater than 100 km. The Kakagi Lake Greenstone Belt (GSB), which hosts the Dogpaw Gold Deposit, within the West Cedartree Gold Project comprises a topographically-high, north- to east-facing supracrustal sequence that is situated to the southwest of the Cameron-Pipestone Fault. The geology of the Kakagi Lake GSB is dominated by the ENE-WSW trending Emm Bay Syncline, the axis to which is located to the south of the West Cedartree Gold Project This large-scale fold structure plunges gently to the east-northeast and is terminated to the east by the crustal-scale Cameron-Pipestone Fault. The Kakagi Lake GSB is comprised of two sequences: 1) the Rowan Group, dominated by submarite ultramafic to mafic, komatiitic-tholeiitic volcanic rocks and minor interflow sedimentary rocks; and 2) the Kakagi Lake Group, consisting of intermediate to felsic tholeiitic to calc-alkaline volcaniclastic rocks (Ball, 2013).




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Gabbro 1 Gabbro
Mafic lava flow-unsubdivided 1 Host
Vein 1 Silicified And Carbonatized Host

Lithology Comments

Feb 27, 2015 (Therese Pettigrew) - Intermediate to mafic volcanic and pyroclastic rocks dominates the supracrustal rocks at the Dogpaw Lake Property This sequence has been have been intruded by several irregular bodies of basic rocks that vary in composition from dioritic to gabbroic and by later, irregular masses of granite and granodiorite with numerous associated dykes and small bodies of feldspar and quartz porphyry. Pyroclastic rocks consist predominantly of unstratified agglomerates with some ash deposits and coarser fragmentals. The agglomerates are massive rocks composed of numerous irregular, large, oval or dumbbell-shaped bombs and fragments of pale rhyolite in a fine grained, slightly darker, matrix of rhyolitic material. The fragments vary in size from an inch or so across to over two feet and usually form about 7 percent of the rock. Bombs of dark chloritic material are common in some parts of the agglomerate mass. The ash deposits are grey to buff coloured tuffs and carry small rounded grains of quartz. They are fine to medium in grain size with no conspicuous bedding and appear to be composed of numerous small, rhyolite fragments in a matrix of the same material. Mafic volcanic rocks underlie the pyroclastic rocks occupying a large, east plunging syncline, whose axis strikes east-northeast, across the area about 8 km south of the Dogpaw Lake property. The mafic intrusive rocks are variable in composition and texture, and changing from the commonly-occurring, brownish, coarse-grained gabbro to a dark green, medium-grained diorite and occasionally ultramafic phases approaching peridotite in composition. Leucocratic phases are common, especially near the contacts of large intrusive bodies. Where the lithology is sheared, the rock becomes finer grained and difficult to distinguish from the coarser phases of the andesitic flows. The mafic intrusive rocks also intrude the pyroclastic unit and occur as large, irregular, sill-like bodies, ranging in strike from a few hundred metres to several kilometres. Feldspar porphyry dykes are common in many parts of the area These rocks are usually medium-grained with sharp 1 to 5 mm light feldspar phenocrysts in a fine quartz rich groundmass. The dykes very in width from about two metres to over 30 metres and some can be traced along their strike for 760 m. The youngest rocks in the area appear to comprise consist of a few, north-west trending dykes of younger gabbro or diabase. The dykes are from 15 to 60 m wide and several can be traced for over 5 km. They are very similar in appearance to the gabbro phase of the mafic intrusive rocks (Ball, 2013).




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
2PyriteEconomicOre
3ChalcopyriteEconomicOre
4QuartzEconomicGangue
CarbonateAlterationCarbonatization1UnknownDisseminated
AlbiteAlterationAlbitization2UnknownDisseminated
SilicaAlterationSilicification3UnknownDisseminated
ChloriteAlterationChloritic4UnknownDisseminated

Mineralization Comments

Aug 25, 2017 (Therese Pettigrew) - The Dogpaw Gold Deposit comprises 10 identified vein sets that extend over a strike of 350 m and to a vertical depth of 210 m. Gold mineralization occurs mainly in gabbro at the contact with mafic volcanic rocks where porphyry intrusions are apparently localized by a series of NW-trending faults (Drabble et al., 2015). In January 1996, a 500 t bulk sample was sent to the Noranda Home smelter. The grade average was 0.21 oz/t Au due to a 30% dilution. The mineralization occurring at the Dogpaw Gold Deposit comprises pyrite-silica, largely as replacements and breccia within both gabbro and mafic volcanic host rocks. The mineralization varies in thickness considerably, particularly over narrow intervals, ranging from 30 cm to more than 5 m, with an average width of 2-3 m. Significant pyrite is especially associated with high-grade zones, with ounce plus results commonly associated with pyrite in the range of 10%. Minor chalcopyrite is also recorded as associated with pyrite and visible gold is common, especially in mineralized material of very high grade. The mineralization within the Deposit occurs in silicified and carbonised veins and/or replacement zones which contain up to 10% pyrite. Gold content is locally very variable ranging up to +100g/t. The mineralisation appears to be fracture controlled and potentially related to movement along the Dalby Bay Shear upon which later movement may have produced fracturing in the basic intrusive host. These veins are mostly steeply north (local grid) dipping and are generally (by surface exposure) quite limited in east west (local grid) strike. The vein set which comprise the current interpretation have been traced for nearly 350 m and has been drill tested in some parts to 200 m below surface. (Ball, 2013).



Alteration Comments

Feb 27, 2015 (Therese Pettigrew) - The alteration associated with mineralization dominantly comprises carbonate, albite and silica in the immediate selvages bounding sulphidic zones extending over several centimetres to a few metres wide, with strong chlorite alteration and minor pyrite and pyrrhotite in a more distal position. Work by Dufresne (1997) indicates the chloritic alteration halo is commonly mineralized (Ball, 2013).




Mineral Record Details

Classification
RankClassification            
1 Lode (Gold)
1 Vein
Characteristics
Rank Characteristic            
1 Sheared
Reserves or Resources Data
Zone Year Category Tonnes Reference Comments Commodities
Dogpaw 2014 Inferred Mineral Resource 64000 Chalice Gold 43-101 (Ball, 2014) 0.5 g/t Au cutoff, 4600 oz Au; 2.27 g/t Au Gold 2.27 Grams per Tonne
Dogpaw 2014 Indicated Mineral Resource 247000 Chalice Gold 43-101 (Ball, 2014) 0.5 g/t Au cutoff, 24,000 oz Au; 3.02 g/t Au Gold 3.02 Grams per Tonne
Dogpaw 2013 Indicated Mineral Resource 247000 Coventry Resources Inc., news release, May 14, 2013 Resource Estimate 43-101 Compliant cut-off 0.5 g/t Au: Indicated: 247 000 t grading 3.02 g/t Au Inferred: 64 000 t grading 2.28 g/t Au
Dogpaw 2013 Inferred Mineral Resource 64000 Coventry Resources Inc., news release, May 14, 2013 158000 t @ 2.71 g/t Au
Dogpaw No. 1 and 2 Veins 1988 Unclassified 18229 Ball, 2013 18,229 short tons grading 0.26 oz/t Au to a depth of 45.7 m Gold 0.26 Ounce per Ton
Dogpaw No. 1, 1A and 2 Veins 1944 Unclassified 59520 Ball, 2013 59,520 short tons with a grade of 0.45 oz/t Au Gold 0.45 Ounce per Ton

References

Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Page: 173  Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River

Publication Number: MDC016 Page: 14, 30  Date: 1976

Author: Beard R.C., Garratt G.L.

Publisher Name: Ontario Division of Mines

Location:


MonoMap - Geology of the Cedartree Lake area, District of Kenora

Publication Number: R134 Page: 24, 35-37  Date: 1976

Author: Davies J.C., Morin J.A.

Publisher Name: Ontario Division of Mines

Location:


Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices

Publication Number: OFR5332 Page: 30, B-6, B-12  Date: 1981

Author: Neilson J.N., Bray R.C.E.

Publisher Name: Ontario Geological Survey

Location:


Publication - Technical Report on the Dogpaw Gold Deposit, Western Ontario, Canada

Publication Number: 2013 43-101 Date: 2013

Author: Ball, P.

Publisher Name: Datageo for Coventry Resources

Location: SEDAR


Publication - Technical Report Cameron Gold Camp Project, Mineral Resource Summary, Western Ontario, Canada

Publication Number: 2014 43-101 Date: 2014

Author: Ball, P.

Publisher Name: Datageo for Chalice Gold Mines Ltd.

Location: SEDAR


Map - Precambrian Geology Kakagi-Rowan Lakes Area

Publication Number: P3594 Scale: 1:50,000    Date: 2007

Author: Johns G.W.

Publisher Name: Ontario Geological Survey

Location:


Map - Cedartree Lake, Kenora District

Publication Number: M2319 Scale: 1:31,680    Date: 1975

Author: Davies J.C., Morin J.A.

Publisher Name: Ontario Division of Mines

Location:


Map - Lake of the Woods sheet, districts of Kenora and Rainy River, geological compilation series

Publication Number: P0281 Scale: 1:126,720    Date: 1997

Author: Davies J.C., Pryslak A.P.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Precambrian Geology Kakagi-Rowan Lakes Area

Publication Number: P3594 Scale: 1:50,000    Date: 2007

Author: Johns G.W.

Publisher Name: Ontario Geological Survey

Location:


Publication - Technical Report on the Cameron Gold Deposit, Ontario, Canada Estimate

Publication Number: 2015 43-101 Date: 2015

Author: Drabble, M., Froud, J., Cervoj, K, and Morgan, R.

Publisher Name: Optiro for Chalice Gold Mines Ltd.

Location: SEDAR


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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office