Ontario Geological Survey
Permanent Link to this Record:
MDI42E03SW00022
| Record Name(s) | Dalsland Occurrence - 1914 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Jan-15 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Zinc
Secondary Commodities: Copper
Township or Area: Rope Lake Area
Latitude: 49° 0' 43.1" Longitude: -87° 16' 51.11"
UTM Zone: 16 Easting: 479461.78 Northing: 5428824.67 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42E03SW
Point Location Description: Trench
Location Method: Data Compilation
Access Description: The occurrence is located about 402 m southwest of Cable Lake and 804 m north of Big Duck Lake, approximately 22.5 km north of Schreiber (claim 646741, claim map G-609, Rope Lake). Easiest access may be gained by aircraft to either Cable or Big Duck Lake and then over land for distances of 402 m and 804 m respectively. Access to Big Duck Lake is also via a drill trail from the Winston Lake Mine site.
1914: showing staked by A.F. Lundquist and transferred to G. Burstrom. 1914-1915: Unspecified work; G. Burstrom. 1920: Patent granted for claim TB 2063. 1956: Airborne geophysical survey (EM); Canamine Explorers Limited. 1958: Geological mapping and ground geophysical survey (EM); C. Authier and Aho. Diamond drilling (1 hole, 153 m long); Canabel Syndicate. 1961: Patent for claim TB 2063 forfeited to the Crown. 1984: Geological mapping and ground geophysical and geochemical surveys; Corporation Falconbridge Copper. 2012: Clearframe Solutions Corp. conducted magnetometer and VLF-EM surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.7632 | 42E03SE8252 | 42E03SE8252 |
| 2.53290 | 20000008278 | 20000008278 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (D McKay) - Pye (1964, p.31) describes the occurrence as follows: The Dalsland zinc deposit is exposed in a trench located about 1/4 mile southwest of Cable Lake, 200 feet south of the north boundary of patented claim T.B. 2063, of the C.G. Burstrom estate. It is in hornblende schist, which in this locality strikes N.75 -80 degrees E and dips 65 degrees N., and is a replacement deposit in which the schist has been mineralized with sphalerite and magnetic pyrrhotite. According to an unpublished report by J.P. Nowlan (1957), the deposit, where exposed in the trench, exhibits appreciable amounts of sphalerite over a width of 20 feet. In March 1958, it was tested by a diamond- drillhole, bored vertically by Canabel Syndicate from a point about 25 feet north of the claim line. At a depth of 383 feet there was found only about 4 inches of material that was estimated to contain about 40 percent (volume) of sphalerite. In 1959 an option on claim T.B. 2063 was obtained by KRNO Mines Limited but, up to October 1960, work on the Dalsland deposit had not been initiated. Wells (1984, assessment files) provides the following comments: An old pit on line 9E at 4 + 25 N is the Dalsland zinc showing. The mineralization consists of traces of disseminated sphalerite in a bedded magnetite-rich chert. Thin (5 cm) garnetiferous beds and quartz-porphyritic tuffs are interbedded with this exhalite. This exhalite-sediment package which is bounded to the north by a coarse-grained gabbro and to the south by a mafic flow is quite discontinuous along strike. At the Dalsland showing there is an enrichment of sphalerite in the cross-cutting actinolite-quartz veins.
| Rock Type | Rank | Composition | Texture | Relationship | Magnetite Ironstone | 1 | Mag-Rich Chert | Host |
|---|---|---|---|---|
| Felsic Tuff | 2 | Q-Porphyritic Tuff | Near | |
| Gabbro | 3 | Gabbro | Near | |
| Mafic lava flow-unsubdivided | 4 | Flow | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sphalerite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore |
Dec 07, 2005 (D McKay) - Wells (1984, assessment files) states: The mineralization consists of traces of disseminated sphalerite in a bedded magnetite-rich chert. Grab samples collected from the occurrence by Corporation Falconbridge Copper in 1984 returned assay values of up to 60 ppb Au, 4.4 ppm Ag, 909 ppm Cu and 5.08% Zn.
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:
MonoMap - Mineral deposits of the Big Duck Lake area, District of Thunder Bay
Publication Number: R027 Page: 31 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Big Duck Lake area, District of Thunder Bay
Publication Number: M2023 Scale: 1:15,840 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 348 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Schreiber-Duck Lake area, District of Thunder Bay
Publication Number: ARM30A Scale: 1:63,360 Date: 1998
Author: Hopkins P.E., Tanton T.L.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 797-799 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
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