Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A08NE00168

Record: MDI42A08NE00168

General

Mineral Record Identification
Record Name(s)	Dominion Gulf - 1991, Dominion Gulf Group 2 - 1991, Brinco Mining Ltd - 9999, Peter Island Resources Inc. - 9999, Western Canada Mining Corp. - 9999, Tillicum - 9999
Related Record Type	Simple
Related Record(s)
Record Status	Prospect
Date Created	1991-Mar-09
Date Last Modified	2022-Sep-26
Created By
Revised By

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Lead

Location

Township or Area: Barnet

Latitude: 48° 24' 33.2" Longitude: -80° 1' 2.07"

UTM Zone: 17 Easting: 572727.29 Northing: 5362251.629 UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A08NE

Point Location Description: Diamond drill hole

Location Method: Conversion from MDI

Access Description: Point Located: A point 4.57 km south and 0.33 km west of the northeast corner of Barnet Township.

Exploration History

1947-1949: Dominion Gulf Co. completed geophysical surveys prior to acquiring claims in the area. 1949-1951: Dominion Gulf acquired claims, completed magnetic and geological surveys, stripped overburden, trenched bedrock, and diamond drilled 4 holes totalling 616 m. This drilling yielded scattered anomalously elevated gold assays ranging from 0.01 to 0.03 ounce of gold per ton and a 10 inch long core section of quartz stringer material which yielded a weighted average assay of 0.102 ounce of gold per ton across a 4 foot long core section. circa 1953: Dominion Gulf allowed its interests in claims in the area to lapse. 1980: Canadian Gold and Metals Inc. completed magnetic and electromagnetic surveys of Barnet Township. 1982: Brinco Mining Ltd. completed magnetic and VLF electromagnetic, geological, and geochemical surveys of the occurrence area. 1984: Derry, Michener, Booth and Wahl (project operator) for Peter Island Resources Inc. on claims held by Brinco Mining completed a magnetic survey and overburden drilled 69 holes totalling 2,387 feet. 1985: Derry, Michener, Booth and Wahl (project operator) for Peter Island Resources completed magnetic and VLF, HL, and IP electromagnetic surveys and diamond drilled 6 holes totalling 653 m. Drill hole no. PI-85-1 yielded a 3.65 m long core length which assayed 0.21 ounce of gold per ton (including a 1.07 m section which averaged 0.464 ounce of gold per ton); hole no. PI-85-04 yielded 0.3 m and 3.05 m long core sections which assayed 0.83 and 0.06 ounce of gold per ton, respectively; and hole no. PI-85-06 yielded a 0.88 m long core section which assayed 0.225 ounce of gold per ton. 1987: Western Canada Mining Corp. (a 34% Consolidated Brinco Ltd. controlled company) was reported to have a 4% net smelter return interest in the occurrence. 1989: Peter Island Resources diamond drilled 857 in 8 holes as well as linecutting and ground magnetics in the occurrence area. Six holes tested the Southeast Zone and 2 holes tested the Main Syenite Zone. 1991: Barnet Exploration Ltd. completed geological mapping, sampling and detailed ground geophysics. 1996: Detector Resources Ltd. completed line cutting, detailed ground geophysics, geological mapping and sampling and diamond drilled 7 holes totaling 1005 m.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
KL-4157	32D05NW0131	32D05NW0131
KL-3772	OMIP 91-084	OMIP 91-084
KL-0705
KL-0280
KL-2255
11	42A08NE0305	42A08NE0305
2.3656	41P06NW0021	41P06NW0021
2.5372	42A08NE0227	42A08NE0227
2.8228	42A08NE0091	42A08NE0091
63.4960	42A08NE0208	42A08NE0208
2.17230	32D05NW0131	32D05NW0131

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Geological Age: Archean

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (D Guidon) - Geological mapping (Sutcliffe and Steele 1989; Johnstone and Steele 1989; Jensen 1989, 1985, 1978; Jensen and Langford 1985; McClenaghan et al. 1989, 1988, 1987; Steele 1988; Baker, Seaman and Steele 1980; assessment and exploration files, Resident Geologist's Office, Kirkland Lake) indicates that bedrock in the occurrence area is largely glacial drift covered. Bedrock consists mainly of weakly metamorphosed (greenschist or lower metamorphic facies, except marginal to large felsic intrusive bodies, where amphibolite grade metamorphic aureoles may be developed) subaqueously deposited tholeiitic volcanic (mainly basalt) and interflow sedimentary rock of the (Archean) Kinojevis Group. Bedrock stratigraphy near the occurrence strikes east, dips steeply, faces south, and constitutes part of the north limb of the east striking and east plunging Blake River Syncline. Intrusive rocks known to occur near the occurrence include felsic to mafic alkalic (syenitic to dioritic) dikes. The presence in the area of amphibolite, of (ubiquitous) felsic dike rocks, and of an uncharacteristically irregular and anomalously elevated magnetic signature (cf. OGS 1984 and other maps in this series) suggest the existence in the area of a sizeable blind (not exposed by the present level of erosion at the bedrock surface) felsic intrusive body or bodies at depth. (The anomalous magnetic values are likely the result of a magnetic contact metamorphic aureole marginal to the intrusive mass or masses.) A recent geophysical survey of Barnet Township (OGS 1984) failed to detect any anomalous bedrock conductors near the occurrence.

Dec 07, 2005 (C Salo) - Geological mapping (Sutcliffe and Steele 1989; Johnstone and Steele 1989; Jensen 1989, 1985, 1978; Jensen and Langford 1985; McClenaghan et al. 1989, 1988, 1987; Steele 1988; Baker, Seaman and Steele 1980; assessment and exploration files, Resident Geologist's Office, Kirkland Lake) indicates that bedrock in the occurrence area is largely glacial drift covered. Bedrock consists mainly of weakly metamorphosed (greenschist or lower metamorphic facies, except marginal to large felsic intrusive bodies, where amphibolite grade metamorphic aureoles may be developed) subaqueously deposited tholeiitic volcanic (mainly basalt) and interflow sedimentary rock of the (Archean) Kinojevis Group. Bedrock stratigraphy near the occurrence strikes east, dips steeply, faces south, and constitutes part of the north limb of the east striking and east plunging Blake River Syncline. Intrusive rocks known to occur near the occurrence include felsic to mafic alkalic (syenitic to dioritic) dikes. The presence in the area of amphibolite, of (ubiquitous) felsic dike rocks, and of an uncharacteristically irregular and anomalously elevated magnetic signature (cf. OGS 1984 and other maps in this series) suggest the existence in the area of a sizeable blind (not exposed by the present level of erosion at the bedrock surface) felsic intrusive body or bodies at depth. (The anomalous magnetic values are likely the result of a magnetic contact metamorphic aureole marginal to the intrusive mass or masses.) A recent geophysical survey of Barnet Township (OGS 1984) failed to detect any anomalous bedrock conductors near the occurrence.

Lithology

Lithology Data
Rock Type	Rank	Composition	Relationship
Vein	1	Quartz Carbonate	Host
Mafic lava flow-unsubdivided	2	Basalt	Near
Syenite	3	Syenite/Epidote Alt. Syenite	Near
Breccia-unsubdivided	4	Rhyolite	Near
Breccia-unsubdivided	5	Mafic	Near
Felsic lava flow-unsubdivided	6	Rhyolite	Near
Mafic lava flow-unsubdivided	7	Silicified Basalt	Near

Lithology Comments

Dec 07, 2005 (D Guidon) - Geological mapping (Sutcliffe and Steele 1989; Johnstone and Steele 1989; Jensen 1989, 1985, 1978; Jensen and Langford 1985;McClenaghan et al. 1989, 1988, 1987; Steele 1988; Baker, Seaman and Steele 1980; assessment and exploration files, Resident Geologist's Office, Kirkland Lake) indicates that bedrock in the occurrence area is largely glacial drift covered. Bedrock consists mainly of weakly metamorphosed (greenschist or lower metamorphic facies, except marginal to large felsic intrusive bodies, where amphibolite grade metamorphic aureoles may be developed) subaqueously deposited tholeiitic volcanic (mainly basalt) and interflow sedimentary rock of the (Archean) Kinojevis Group. Bedrock stratigraphy near the occurrence strikes east, dips steeply, faces south, and constitutes part of the north limb of the east striking and east plunging Blake River Syncline. Intrusive rocks known to occur near the occurrence include felsic to mafic alkalic (syenitic to dioritic) dikes. The presence in the area of amphibolite, of (ubiquitous) felsic dike rocks, and of an uncharacteristically irregular and anomalously elevated magnetic signature (cf. OGS 1984 and other maps in this series) suggest the existence in the area of a sizeable blind (not exposed by the present level of erosion at the bedrock surface) felsic intrusive body or bodies at depth. (The anomalous magnetic values are likely the result of a magnetic contact metamorphic aureole marginal to the intrusive mass or masses.) A recent geophysical survey of Barnet Township (OGS 1984) failed to detect any anomalous bedrock conductors near the occurrence.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking
1	Hematite	Economic	Ore
2	Magnetite	Economic	Ore
3	Pyrite	Economic	Ore
4	Pyrrhotite	Economic	Ore
5	Chalcopyrite	Economic	Ore
6	Specularite	Economic	Ore
7	Galena	Economic	Ore
1	Chlorite	Economic	Gangue
2	Carbonate	Economic	Gangue
3	Epidote	Economic	Gangue
4	Quartz	Economic	Gangue
5	Amphibole	Economic	Gangue
6	Calcite	Economic	Gangue
	Chlorite	Alteration		Chloritic	1
	Silica	Alteration		Silicification	2
	Carbonate	Alteration		Carbonatization	3

Mineralization Comments

Dec 07, 2005 (D Guidon) - Diamond drilling first by Dominion Gulf circa 1950 and then by Peter Island Resources in 1985 is reported (assessment and exploration files) to have intersected erratically distributed anomalous (assaying greater than 0.01 ounce of gold per ton and locally as much as about 0.5 ounce of gold per ton) gold tenors within: a) quartz-carbonate veins containing accessory amounts of pyrite, chalcopyrite, and galena; b) mixed (meta)basalt/syenite rock hosting quartz-carbonate veins and accessory amounts of pyrite and chalcopyrite; c) pyritic syenite; d) pyritic and chalcopyrite bearing mafic breccia hosted by syenite; e) epidote altered syenite; and f) rhyolite, rhyolite breccia, and silicified basalt spatially associated with syenitic intrusive material. The Dominion Gulf diamond drilling was originally spotted to test at depth surface exposures of what were reported to be calcite veins containing significant but subeconomic concentrations of galena. Bedrock exposed circa 1950 near the occurrence is also reported (assessment files) to contain as much as 20% of at least three types of pyrite: brassy, cubic, and finely disseminated. Sampling of such pyritic material is reported (assessment files and reproduced in Jensen 1978) to have yielded erratically distributed gold assays which could not be correlated with an individual sample's sulfide content. This was suggested to indicate that anomalous gold tenors at the occurrence may be due to the presence of very fine grained (invisible) native gold, the distribution of which is independent of that of sulfide minerals. The presence of native gold at the occurrence is also suggested by the erratically distributed (both spatially and in magnitude) gold assays obtained by the Peter Island Resources drilling in 1985.

Dec 07, 2005 (C Salo) - Diamond drilling first by Dominion Gulf circa 1950 and then by Peter Island Resources in 1985 is reported (assessment and exploration files) to have intersected erratically distributed anomalous (assaying greater than 0.01 ounce of gold per ton and locally as much as about 0.5 ounce of gold per ton) gold tenors within: a) quartz-carbonate veins containing accessory amounts of pyrite, chalcopyrite, and galena; b) mixed (meta)basalt/syenite rock hosting quartz-carbonate veins and accessory amounts of pyrite and chalcopyrite; c) pyritic syenite; d) pyritic and chalcopyrite bearing mafic breccia hosted by syenite; e) epidote altered syenite; and f) rhyolite, rhyolite breccia, and silicified basalt spatially associated with syenitic intrusive material. The Dominion Gulf diamond drilling was originally spotted to test at depth surface exposures of what were reported to be calcite veins containing significant but subeconomic concentrations of galena. Bedrock exposed circa 1950 near the occurrence is also reported (assessment files) to contain as much as 20% of at least three types of pyrite: brassy, cubic, and finely disseminated. Sampling of such pyritic material is reported (assessment files and reproduced in Jensen 1978) to have yielded erratically distributed gold assays which could not be correlated with an individual sample's sulfide content. This was suggested to indicate that anomalous gold tenors at the occurrence may be due to the presence of very fine grained (invisible) native gold, the distribution of which is independent of that of sulfide minerals. The presence of native gold at the occurrence is also suggested by the erratically distributed (both spatially and in magnitude) gold assays.

Mineral Record Details

References

Map - Geological series, Quaternary geology of the Ramore area, districts of Cochrane and Timiskaming

Publication Number: P2381 Scale: 1:50,000 Date: 1980

Author: Baker C.L., Seaman A.A., Steele K.G.