Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F05SW00142

Record: MDI52F05SW00142

General

Mineral Record Identification
Record Name(s) East Cedartree Lake - 1998
Related Record Type Simple
Related Record(s)
Record Status Developed Prospect With Reported Reserves or Resources
Date Created 2003-Nov-24
Date Last Modified 2021-Dec-13
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Dogpaw Lake Area

Latitude: 49° 19' 23.34"    Longitude: -93° 50' 36.83"

UTM Zone: 15    Easting: 438700   Northing: 5463722    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F05SW

Point Location Description: 2012 NI 43-101 report

Location Method: Data Compilation

Access Description: From Sioux Narrows the claims are easily accessible by heading east 12 kilometers, on the Cameron Lake Road, an all-weather east-trending gravel road which branches from highway # 71 some 14 kilometers south of Sioux Narrows and crosses the northern part of the claims. A permit from the Ministry of Natural Resources is required to travel the Cameron Lake Road.



Exploration History

1983: Sherritt conducted geological mapping and sampling of the Cedartree-Flint Lake area. 1984: Prospectors conducted geological mapping, and mag, VLF and EM geophysical surveys. 1985: Prospectors conducted a magnetic survey between Kakagi Lake and Cedartree Lake. 1988: Prospector G. LaFleche conducted a magnetometer survey on the eastern shore of Cedartree Lake and in the Dogpaw Lake area. 1992: J. Martin conducted trenching and sampling north of Cameron Lake Road. 1997: G. Reading conducted prospecting and sampling on Cedartree, Kagai and Wesiener Lakes. 1998: Avalon Ventures Ltd. conducted an IP/resistivity survey on the Dubenski Project and drilled 4 DDH totalling 528.3 m on the East Cedartree showing. 2002: Metalore Resources Ltd. purchased the property from Avalon in July, staked additional claims and drilled 22DDH totalling 2270.3 m. 2003: Metalore drilled 17 DDH totalling 2640.8 m and conducted prospecting as well as magnetic and VLF-EM geophysical surveys. 2004: Metalore drilled 14 DDH totalling 1563.6 m and conducted stripping and geological mapping. 2005: Metalore conducted geophysical surveys. 2006: Metalore drilled 18 DDH totalling 2625 m. 2007: Metalore drilled 5 DDH totalling 748 m. 2008: Metalore drilled 11 DDH totalling 1815.5 m. 2010: Metalore drilled 8 DDH totalling 1284 m, and conducted sampling. 2013: Metalore drilled 9 DDH totalling 1555 m.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
2.7325 52F05SE0086 52F05SE0086
2.40541 20000003906 20000003906
2.20073 52F05SW2011 52F05SW2011
2.27418 52F05SW2020 52F05SW2020
2.1371 52F05NW0037 52F05NW0037
2.30865 20000000898 20000000898
2.10190 52F05SW0040 52F05SW0040
2.7312 52F05SW0084 52F05SW0084
2.18852 52F05SW2008 52F05SW2008
2.8951 52F05SW0053 52F05SW0053
2.49609 20000007673 20000007673
2.27171 52F05SW2018 52F05SW2018
2.25790 52F05SW2016 52F05SW2016
2.30409 20000000854 20000000854
2.27848 52F05SW2021 52F05SW2021
2.54757 20000014746 20000014746

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Kakagi-Rowan Lakes

Geological Age: Archean  



Geology Comments

Apr 13, 2016 (Therese Pettigrew) - The property is located to the south of the Pipestone-Cameron Deformation Zone and covers a large area of the western flank of the Emm Bay syncline, which plunges NNE. The later Stephen Lake stock bisects this syncline. The Stephen Lake Stock is elongated into a northwest direction 90° to the axis of the syncline. All formations face towards the center of the belt and also all of the geological formations north and northeast of Kakagi Lake appear to be truncated by the southeast-trending Pipestone-Cameron Deformation Zone. Re-folding may be present in the area but it appears that part of the northwest limb of the Emm Bay syncline (around the Dubenski property) has been “dragged” into a more easterly trending direction by the Pipestone-Cameron deformation zone (Larouche, 2012).




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Granodiorite 1 Host
Felsic Tuff-Breccia 2 Brecciated Tuff Host
Terrigenous-Clastic-Unsubdivided 3 Adjacent
Gabbro 4 Adjacent

Lithology Comments

Apr 13, 2016 (Therese Pettigrew) - The Kakagi Lake group, includes basal mafic volcanic, the felsic composition Kakagi pyroclastics comprising tuff breccia (clasts vary from mafic to dacitic with a dirty matrix), slump breccia (unsorted agglomerate to lapilli size clasts), interbedded with fine-grained tuffs (reworked volcaniclastics). The middle portion of the Kakagi Group, the Cedartree Lake Formation, is comprised mainly of massive dacitic composition fine grained pyroclastic series (re-worked), well layered fine grained tuffs, with abundant cherty inter-sedimentary beds, and minor coarser-grained component. This unit is locally nicely bedded from centimeters to meters. The metasediments are composed of argillites and chert. The tuffs are usually cream colored on weathered surface and pale green on the fresh surface. All of the above formations are intruded possibly by older gabbro and diorite. Avalon Ventures within their stratigraphy of the property, included another intrusive phase, a quartz -feldspar porphyritic felsic intrusion, older than the Kakagi Sill. The Kakagi Mafic Sills intrude the Kakagi and Cedartree Formations and are folded. The Stephen Lake Stock, a younger intrusion possibly cutting across one of the Kakagi Sills, is partly present on Metalore’s property. Davies and Morin (1976) described the Stephen Lake Stock as being quite heterogeneous; the main internal portion was mapped as granodiorite – quartz diorite to augite diorite, while dioritic phases appear to characterize the marginal portions. The main part of the stock consists of medium- to coarse-grained rock with no visible foliation but it is typically fine grained at contact. Large angular xenoliths of mafic volcanic and gabbro are also reported within this stock. The xenoliths are conformable in bedding with adjacent country rock. One highly altered phase of the stock has been described as having a relict porphyry texture, with complete sericitization of plagioclase, uralization of augite and a fine grained groundmass of 40% quartz. This porphyritic intrusion (Stephen Lake Stock) probably plunges 45° to 70° to the northeast and is the host of some of the gold- molybdenum + copper mineralization, namely the Starlyght Occurrence (Larouche, 2012).




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1QuartzEconomic And AlterationGangueSilicification1UnknownDisseminated
1GoldEconomicOre
2PyriteEconomicOre
CarbonateAlterationCarbonatization2UnknownDisseminated

Mineralization Comments

Apr 13, 2016 (C Ravnaas) - Assay results from DDH 98-02 returned up to 13300 ppb Au from brecciated felsic tuff and up to 18030 ppb Au from altered granodiorite, felsic intrusive rocks is reported in Avalon Venture assessment file 52F05SW FFFF-5.


Apr 13, 2016 (Therese Pettigrew) - Values of 14.2 m grading 33.02 g/t Au (drill hole M5), 7.3 m grading 10.90 g/t Au (drill hole M-13) and 2.89 m grading 27.84 g/t Au (drill hole M-17) were reported from the 2002 Metalore surface drilling program. The gold mineralization is associated with silica flooding present within sheared and brecciated zones, cutting across different lithologies. Some of the results from Avalon’s 1998 drill program include: DDH 98-01: 79.6-96.1 m up to 1530 ppb gold (462 ppb over gold 16.5 m); DDH 98-02 (the discovery hole): 14.05-33.0 m up to 13,300 ppb gold with vg (uncut 3461.3 ppb over gold 18.95 m); DDH 98-03: 45.0- 93.0 m up to 40,320 ppb gold (uncut 4987 ppb gold over 4.3 meters); DDH 98-04: 82-122.05 m up to 3720 ppb gold (564 ppb gold over 37.5 meters). At the main Cedartree Showing, the gold mineralization of economic interest appears associated to quartz-pyrite veining and associated alteration halos. Gold occurs with pyrite both in the intrusion and in neighboring altered volcanic rocks. These veins post-date the intrusive bodies, gabbro sill and diorite-granodiorite masses, and are emplaced in areas of more fracturing and shearing resulting probably from the regional deformation. The structures mapped into the granodiorite intrusive on the Metalore property showing E-W trending quartz veining are always accompanied by a strong joint system oriented N-S (Larouche, 2012).



Alteration Comments

Apr 13, 2016 (Therese Pettigrew) - The area has been metamorphosed to the greenschist facies. Contact metamorphism may also be present around Stephen Lake Stock. At Metalore’s main gold showing a narrow zone of “amphibolite” has been described at the contact of the gold-bearing hornblende granodiorite with the intermediate volcanic rocks. In the area of gold mineralization, volcanic rocks are locally strongly carbonated either as disseminated carbonate or veinlets rich in carbonate. Locally minor sericite alteration is visible. Silicification is usually “patchy” but fairly well overprints both the volcanic rocks and the intrusive rock with no marked variation in strength at the contact. Minor “potassic” alteration has also been noted in drill core (Larouche, 2012).




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
East Cedartree Main Zone 2012 Indicated Mineral Resource 434505 Metalore Resources Ltd., press release, March 14 2012. Resources Estimate 43-101 Compliant; cut-off 1.0 g/t Au; Indicated: 434 505 t grading 3.91 g/t Au for 54,487 oz Au Gold 3.91 Grams per Tonne
East Cedartree Main Zone 2012 Inferred Mineral Resource 294155 Metalore Resources Ltd., press release, March 14 2012. Resources Estimate 43-101 Compliant; cut-off 1.0 g/t Au; Inferred: 294 155 t grading 3.21 g/t Au for 30,416 oz Au Gold 3.21 Grams per Tonne

References

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

Publication Number: R134 Date: 1976

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

Publisher Name: Ontario Division of Mines

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:


Publication - Technical Report, Gold Exploration Potential & Preliminary Resource Estimate, “East Cedartree Lake” Mining Claims, Kenora Mining District, Northwestern Ontario

Publication Number: 2012 NI 43-101 Date: 2012

Author: Larouche, C.P.

Publisher Name: Metalore Resources Ltd.

Location: Metalore website


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