Ontario Geological Survey
Permanent Link to this Record:
MDI52F07NE00006
| Record Name(s) | Laurentian Mine - 1903 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1984-Feb-02 |
| Date Last Modified | 2022-Mar-08 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Boyer Lake Area
Latitude: 49° 26' 47.85" Longitude: -92° 41' 56.23"
UTM Zone: 15 Easting: 521821.805 Northing: 5477150.329 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F07NE
Point Location Description: Precise
Location Method: Conversion from MDI
Access Description: The Laurentian Mine property is located at the head of Trafalgar Bay, Upper Manitou Lake, is on the same shear zone as the Jubilee Mine, and about 305.0 metres northwest of the Big Master shear zone. (Historical File F07NE0006, EMR#502598, Kenora Resident Geologist Office)
The original mining operations were on HP 311, and commenced in 1903, under the ownership of the Laurentian Mining Company, later the Anthony Blum Gold Mines, Limited. Milling operations proceeded through 1906 to 1909, when the mine went into receivership and operations terminated, though a skeleton staff was kept on for some years. In 1913, the Great Golconda Mines Company Limited took out and milled some rock from the old workings. The Dominion Reduction Company dewatered the shaft, along with those of the Big Master and Jubilee mines, in 1916, and carried out some sampling, but dropped their options shortly after. In 1935, Elora Gold Mines, limited was organized to develop a group of 10 claims including the Laurentian and Elora (or Jubilee) mines. No further mining was carried out at the Laurentian Mine, but following development of the Jubilee vein at the Elora Mine, the plant handled material from this vein. The Laurentian mine was dewatered in 1938 by Elora Gold Mines Ltd, and some samples taken from the drifts.
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Gold | Economic | Ore |
Feb 24, 2010 (C Ravnaas) - The original mining operations were on HP 311, and commenced in 1903, under the ownership of the Laurentian Mining Company, later the Anthony Blum Gold Mines, Limited. At time of inspection in 1904 (Carter 1905) the company owned five other claims, one of which (HP 252) is still held by Elora Gold Mines Limited. The original shaft followed a small vein of dark quartz, which in places produced some showy free gold specimens (Carter 1905). Other veins were recognized parallel to this vein, and "They are all more or less lenticular in character, and lie in and with the strike of the greenstone country rock, which is NE-SW (Carter 1905). According to Parsons (1911), "The ore body consists of bands of quartz varying from a mere trace up to several inches in width, at the margin of the vein is a brecciated wall rock which grades into a porphyritic diabase. At a distance of less than 40 feet (12 m) from the vein this porphyritic diabase merges into a darker diabase. According to the report by H.J. Emery in 1965, on work done by Elora Gold Mines Limited, "Results showed that all developed ore in the Laurentian shear zone had been removed except on the 473 foot or bottom level. Here assays averaged 0.10 oz. Au/ton (cut) or 0.24 oz/ton (uncut) over a 10.0 foot width for the full 80 feet of drift length. Therefore, ore possibilities at lower elevations and along strike appear favorable." An examination was also made of cross-cuts and drifts that had been driven on tile 200 foot level to develop the parallel Jubilee and East shear zones, located 200 feet northwest and 220 feet southeast of the Laurentian shaft respectively. On the Jubilee shear, 35 feet of drifting had been completed in barren material. On the East shear, a drift had been driven 140 feet along a continuous quartz vein varying in thickness from a few inches to five feet. Sampling across this quartz returned an average of 0.129 oz. Au/T over 32.5 inches for the full drift length of 140 feet. According to Ferguson et al. (1971), gold production from the Laurentian Mine is reported to have been $141,140 from 19,950 tons of ore milled during its operating period from 1906 to 1909. During this period 8,143 oz. of gold were recovered (OGS OFR 5263, p.141-144; 1979).
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Laurentian Mine | 1981 | Unclassified | 50650 | OFR5332 p. 37 | 50,650 tonnes at 0.25 opt | Gold 0.25 oz/T |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1909 | 18098 |
Gold 8100 Ounces |
OFR5332 p. D-7 |
Book - Preliminary report on volcanism and mineralization in the Lake of the Woods-Manitou Lake-Wabigoon region of northwestern Ontario
Publication Number: PR1965-02 Scale: Date: 1998
Author: Goodwin A.M.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Scale: Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Scale: Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
Mono - Geology of the Boyer Lake-Meggisi Lake area, District of Kenora
Publication Number: OFR5263 Scale: Date: 1979
Author: Blackburn C.E.
Publisher Name: Ontario Geological Survey
Location:
Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices
Publication Number: OFR5332 Scale: Date: 1981
Author: Neilson J.N., Bray R.C.E.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Boyer Lake-Meggisi Lake area, District of Kenora
Publication Number: R202 Scale: Date: 1981
Author: Blackburn C.E.
Publisher Name: Ontario Geological Survey
Location:
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