Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI000000001053

Deposit: MDI000000001053

General

Mineral Deposit Identification
Deposit Name(s) Stake Lake - 2006
Deposit Status occurrence
Date Created 2011-Mar-07
Date Last Modified 2020-Feb-12
Created By C Ravnaas
Revised By T Pettigrew

Commodities

Primary Commodities: copper

Secondary Commodities: gold

Location

Township or Area: Press Lake Area

Latitude: 49° 48' 10.96"    Longitude: -91° 18' 48.53"

UTM Zone: 15    Easting: 621358   Northing: 5518097    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52G14SW

Point Location Description: DDH STK-006 from Assessment report 20000003141

Location Method: data compilation

Access Description: Access is via Highway #599 north from Ignace for 55 km to Silver Dollar, then west along Highway #642 for 11 km. At this point a small logging road is used to access an old railway grading which transects the property from northwest to southeast corners, between Stake and Moss Lakes.

Exploration and Mining History

2006: Benton Resources carried out prospecting and sampling. 2007: Tri Gold Resources optioned the property and carried out IP and magnetic surveys, trenching, sampling, and drilled 6 DDH totalling 1398.5 m.

Assessment Work on File

Assessment Work on File
Office File Number   Online Assessment File Identifier   Online Assessment File Directory  
2.37157     20000003141     Open
2.36638     20000002574     Open

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Sturgeon Lake

Geological Age: Archean   

Geology Comments

03/07/2011 (C Ravnaas) - The oldest rocks shown on these maps are fine to medium grained mafic volcanic, flows (mostly massive), with rarer tuffs and agglomerates paralleling a weak 070 deg foliation. This is the predominant rock type shown to underlay the central portion of the claims where the drilling occurred. The next youngest rock type is the “multiphase, differentiated” mafic to ultramafic Pike Lake Intrusion. This lithology is shown to occur in the southwest corner of the claim block, about 1 km southwest of the area of drilling, and along the eastern margin of the property. Foliation and overall morphology parallels the 070 deg fabric of the mafic volcanic rocks. The youngest rock type shown on regional maps to occur in the property area is the Granodiorite to Trondhjemitic Shanty Lake Intrusion, which is indicated as covering the northern three claim blocks.

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
mafic metavolcanics 1
intermediate metavolcanics 2 granodiorite to monzodiorite

Lithology Comments

03/07/2011 (C Ravnaas) - Four main rock types were encountered in the drilling. 1 - Basalt is a typical “greenstone”, massive to weakly, sub-vertically foliated, with very rare amygdaloidal, tuffaceous, sandy, calc-silicate or cherty bands. 2 - Granodiorite is medium grained, homogeneous, equigranular and consists of 30% Quartz, 60% Feldspar, and about 10% mafic mineral. Alteration is ubiquitous consisting of weak albitization of feldspars, and partial chloritization of mafics. 3 - Monzo-Diorite is medium grained, massive, and consists of 5-10% Quartz, 50% feldspar, and 30% chlorite altered mafic mineral. This may the Trondhjemite indicated on regional maps. 4 - Less abundant rock types include Mafic and Felsic Dikes. Mafic Dikes are massive, black, very hard, aphanitic, contain no sulphides, and have sharp contacts (occasionally chill margins) and cut all other rock types. Felsic dikes are massive, very light tan or grey, very hard, aphanitic, have very sharp contacts, and contain 1% very finely disseminated pyrite and pyrrhotite. They occur only within the basalt. Reference Tri Gold Resources, assessment file, Kenora Geology Office 52G14SW D-2 AFRO 2.37157

Mineralization

Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 chalcopyrite economic ore
2 pyrite economic ore
3 pyrrhotite economic ore

Mineralization Comments

03/07/2011 (C Ravnaas) - Sampling of large angular float yielded up to 4.16% Cu, 82 ppm Ag, 2,755ppb Au, with elevated Zn. Additional sampling of the boulders by geologist's office staff yielded up to 42 ppm Ag, 2500 ppm Cu, and 656 ppm Zn. Tri Gold Resources between August 14th and August 29th, 2007 drilled 6 holes totalling 1,398.5 m. This drill program was not successful in locating the bedrock source of the boulders by did intersect gold and copper mineralization. The highest values from this drill program were 1126 ppb Au, 4943 ppm Cu and 463 ppm Ni. The felsic dikes intersected in the drill holes all have elevated Cu/Au values, and the highest Au sample of the program 1126ppb occurs in a one of these near the bottom of hole STK-005. Reference Tri Gold Resources, assessment file, Kenora Geology Office 52G14SW D-2 AFRO 2.37157

02/12/2020 (T Pettigrew) - DDH STK-006 returned up to 4943 ppm Cu and 0.168 ppm Au over 0.3 m from a monzodiorite with chalcopyrite in vuggy stringers. DDH STK-005 returned up to 2035 ppm Cu over 0.75 m from a mafic metavolcanics with pyrrhotite and minor chalcopyrite, and 2489 ppm Cu and 0.126 ppm Au over 0.3 m from a basalt with pyrite and chalcopyrite. DDH STK-002 returned up to 3343 ppm cu and 0.173 ppm Au over 0.3 m from a basalt with chalcopyrite (Assessment report 20000003141).

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