Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E03SW00025

Record: MDI42E03SW00025

General

Mineral Record Identification
Record Name(s)	Burstrom Copper - 1915, Halonen Property - 1957, Tb2091 - 1915
Related Record Type	Simple
Related Record(s)
Record Status	Occurrence
Date Created	1980-Jan-14
Date Last Modified	2022-May-09
Created By
Revised By

Commodities

Primary Commodities: Copper, Molybdenum, Gold

Secondary Commodities: Silver

Location

Township or Area: Rope Lake Area, Pays Plat Lake Area

Latitude: 49° 0' 8.32" Longitude: -87° 17' 45.1"

UTM Zone: 16 Easting: 478361 Northing: 5427755 UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42E03SW

Point Location Description: Shaft

Location Method: Field Visit

Access Description: The occurrence lies approximately 0.8 km west of the northwest end of Big Duck Lake, about 25 km north of Schreiber (claim TB 2091, claim map G-606 and G-609 Pays Plat Lake and Rope Lake areas). Access may be gained by the Winston Lake road to the area of Winston Lake north of Highway 17. Drill roads extend across the Minnova Inc. property in the immediate vicinity of the occurrence. Float aircraft may utilize Big Duck Lake, and the occurrence can be accessed from the western shore of Big Duck Lake. The occurrence is located 1 km west of the west end of Big Duck Lake.

Exploration History

1915: Surface work, shaft sinking (1.5 by 1.5 by 6 m), open cut (6.6 m long); G. Burstrom. 1918: Patent granted for claim TB 2091. 1921: Shaft expanded and deepened to 1.5 by 2.1 by 10.7 m; G. Burstrom. Pre-1957: The property was acquired by J.E. Halonen. 1959: Property was acquired by KRNO Mines Ltd. 1960: Diamond drilling (1 hole 71.9 m long); KRNO Mines Limited. 1983: Property examination and lithogeochemical sampling; OGS Resident geologist staff. 1986: Minnova Inc. drilled a number of DDH (approximately 57 in the general Big Duck Lake area and 2 DDH in the Burstrom showing area). 2006-07: Tri Gold Resources Corp. carried out mapping, sampling, and drilled 3 DDH totalling 459 m.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
2.36089	20000002793	20000002793
28	42D14NW0003	42D14NW0003

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean

Geology Comments

Dec 07, 2005 (D McKay) - Pye (1964) describes the occurrence as follows: It occurs in hornblende schist, close to the contact of the schist with the quartz porphyry that lies on the north; like the schist in this locality the deposit strikes a few degrees north of east and dips 55 -65 degrees N. It is made up of two parallel quartz veins, each about 10 feet thick, separated by 10-15 feet of schist. The quartz veins are typical of the area. They consist of fine-grained to medium grained sugary-textured quartz that is interrupted at irregular and frequent intervals by thin books of schist, the hornblende of which has partly been replaced by biotite, and by ribbons of dark-coloured micaceous material. The veins are well mineralized with pyrite, and contain some chalcopyrite and, their weathered surfaces exhibit malachite and a little azurite. The wall rock adjacent to and between the quartz veins is cut by numerous thin stringers of quartz and, to a lesser extent, of quartz and carbonate. Although the wall rock was not found to contain any chalcopyrite, nevertheless it is well mineralized with pyrite. The two quartz veins have been exposed in a north-south trench, about 50 feet long, and have been tested in two pits, each about 10 feet deep, cut from the bottom of the trench. A shaft 35 feet deep, was sunk about 30 feet west of the north end of the trench. Although the shaft probably cut the down-dip extension of the north vein, it is now full of water and there is no record that the shaft did intersect the vein.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Mafic lava flow-unsubdivided	1	Hb Schist	Massive To Pillowed, Locally Tuffaceous	Host
Vein	2	Quartz		Host
Quartz Porphyry	3			Near
Diabase	4	Diabase Dike		Near
Ironstone-unsubdivided	5			Host

Lithology Comments

Dec 07, 2005 (D McKay) - Schnieders et al. (1996) state: The geology consists of intermediate to mafic metavolcanics chiefly pillowed and massive flows and some tuff. The metavolcanics have been intruded by quartz porphyry, and the metavolcanics observed are altered to amphibolite and biotite rich. Quartz veins are present in association with and near the contact of the quartz porphyry and metavolcanics. A 2.7 m by 1.8 m shaft or deep pit was observed near a small creek, which likely produced serious water problems for the developers. A trench was observed approximately 15 m southeast of the shaft, with a quartz porphyry dyke or sill and quartz vein present. The vein strikes west and dips form 50 to 70 degrees N. The quartz vein displays a glassy to sugary texture, resembling again a recrystallized texture. Mineralization consists of pyrite, azurite, malachite and chalcopyrite. Samples collected from the dump indicate the presence of an iron formation unit, with massive magnetite and disseminated pyrite and accessory malachite, azurite, chalcopyrite, chalcocite and molybdenite. A sugary texture quartz vein, varying in colour from white to grey is associated with the ironstone unit.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Azurite	Economic	Ore
2	Chalcopyrite	Economic	Ore
3	Molybdenite	Economic	Ore
4	Malachite	Economic	Ore
5	Pyrite	Economic	Ore
6	Magnetite	Economic	Ore
7	Chalcocite	Economic	Ore
1	Quartz	Economic	Gangue
	Quartz	Alteration		Hydrothermal	1	Unknown	Veins
	Malachite	Alteration		Supergene	2	Unknown	Disseminated
	Azurite	Alteration		Supergene	3	Unknown	Disseminated

Mineralization Comments

Dec 07, 2005 (D McKay) - Schnieders et al. (1996) state that the mineralization in the quartz vein consists of pyrite, azurite, malachite and chalcopyrite. They also state that samples collected from the dump indicate the presence of an iron formation unit, with massive magnetite and disseminated pyrite and accessory malachite, azurite, chalcopyrite, chalcocite and molybdenite. The best drill sample, from the hanging wall side of the north vein was found to contain 1.05% Cu, 0.11% Mo, 0.02 ounce per ton Au and 0.57 ounce per ton Ag, over a core length of 1.5 m (Pye 1964, p.24). Shklanka (1969) described the occurrence as follows: the showing is 7 feet (2.1 m) wide, exposed in an open cut and shaft, and assayed approximately 4% Cu. Grab samples collected from the occurrence in 1983 by OGS Resident geologist staff returned assay results which varied from 0.02 to 0.06 opt Au, 0.10 to 0.15 opt Ag, 1960 to 9800 ppm Cu, <10 ppm Pb, 84 to 95 ppm Zn, 60 to 64 ppm Co and 84 to 102 ppm Ni. Schnieders et al. (1996) state that: Assays of up to $30 in gold were reported from the Burstrom claims (2088, 2089, 2091) in 1917.

May 29, 2019 (Therese Pettigrew) - Samples collected in 2004 from historic drill core assayed 0.546 g/t Au over 0.7 m in DDH BD-47. Samples collected in 2006 assayed 0.214 g/t Au, 468 ppm Cu, and 12 ppm Mo over 1 m in DDH BD06-14 (Burstrom); 0.781 g/t Au, 1878 ppm Cu, and 96.5 ppm Mo over 14.8 m in DDH BD06-13 (Burstrom West); and 0.393 g/t Au, 2442 ppm Cu, and 137 ppm Mo over 46.5 m (including 1.395 g/t Au, 3145 ppm Cu, and 131 ppm Mo over 4 m) in DDH BD06-23 (Burstrom West) (Assessment file 20000002793).

Mineral Record Details

References

Book - Nipigon-Schreiber District, Geological Survey of Canada Summary Report 1920, Part D, p. 2-7

Publication Number: SR 1920 Date: 1921

Author: Tanton, T.L.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/297670

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440 Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 815-821 Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Big Duck Lake area, District of Thunder Bay

Publication Number: M2023 Scale: 1:15,840 Date: 1997

Author: Pye E.G.