Ontario Geological Survey
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MDI42A09SE00029
| Record Name(s) | King Midas Ltd. - 1916, Wood-Croesus Gold Mines Ltd. - 1925 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1990-Nov-12 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Munro
Latitude: 48° 33' 4.31" Longitude: -80° 14' 29.52"
UTM Zone: 17 Easting: 555972.769 Northing: 5377844.009 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A09SE
Point Location Description: A point 1.90 km north and 2.53 km east of the southwest corner of Munro Township.
Location Method: Conversion from MDI
Access Description: Access to the area is via a narrow, variably overgrown but 4 wheel drive vehicle passable dirt road from Highway 101 via the Croesus Mine. A few hundred metres south of the Croesus Mine shaft area, this access road is frequently flooded and made impassable (by vehicle) due to beaver activity. The area is also accessible from the north via the same road where it joins dirt and gravel roads near the now flooded Canadian Johns-Manville Co. Ltd. Munro (asbestos) Mine open pit to the northwest. The old Munro Mine workings are accessible via a paved access road which joins Highway 101 near the southwest corner of Munro Township.
1916: King Midas Ltd. was incorporated (Gibson 1917). 1925: Wood-Croesus Gold Mines Ltd. was incorporated (Canadian Mines Handbook 1978-79). 1951: King Midas Gold Mine Co. was reported (Satterly 1952) to hold the 8 patented claim property formerly held by Wood-Croesus. The name of the company was probably King Midas Ltd., not King Midas Gold Mining Co. 1959: King Midas Ltd. surrendered its charter and sold its assets (Canadian Mines Register 1966). Wood-Croesus Gold Mines Ltd. purchased the 8 patented claims which were formerly held by King Midas (The Northern Miner, September 1979). 1967: Wood-Croesus Gold Mines held a several contiguous patented claims in the area, including those formerly held by King Midas. This claim group was optioned to Canadian Johns-Manville Co. Ltd. (The Northern Miner, March 30, 1967). Canadian Johns-Manville completed magnetometer and VL electromagnetic surveys in the north part of the Wood-Croesus property and diamond drilled a hole to test sulfide exposures for base metal content, but found only low values in nickel (L. Hobbs, consulting engineer, written comm. 1988). 1968: Wood-Croesus Gold Mines acquired additional patented claims in the area. By year end, their holdings amounted to a contiguous block of 19 patented claims in southwestern Munro and northwestern Guibord Townships (The Northern Miner, September 1979). 1979: Amax Potash Ltd. optioned the Wood-Croesus Gold Mines claims, and completed geophysical, geological, and geochemical surveys. Two holes were diamond drilled by Amax Potash. No significant mineralization was intersected by this drilling and the option was allowed to lapse in 1980 (The Northern Miner, September, 1979; March 13, 1980; L.Hobbs, consulting engineer, writ. comm., April, 1988). 1987: A 2,184 foot, 4 hole diamond drilling program was completed by Wood-Croesus Gold Mines. This drilling followed a biogeochemical survey (L. Hobbs, consulting engineer, writ. comm., April, 1988).
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Stoughton-Roquemaure
Geological Age: Mesoarchean
Metamorphism Grade: Greenschist
Dec 07, 2005 (R Degagne) - Regional structural trends are dominated by the southeast striking and northwest plunging McCool Hill Syncline, the axis of which occurs about 6.4 km northeast of the quartz veins. Immediately north of the property, the southeast striking Munro Fault Zone is marked by an extensive swamp. Numerous northeast striking cross faults across which limited associated apparent horizontal displacement has occurred are present in the area (Johnstone and Trowell 1985, Johnstone 1987, Satterly 1952).
| Rock Type | Rank | Composition | Texture | Relationship | Ultramafic-Unsubdivided | 1 | Near |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Near | |
| Quartz Diabase | 3 | Qtz Diabase | Near | |
| Mafic pillowed flow | 4 | Tholeiitic Basalt | Pillowed | Adjacent |
| Intermediate lava flow-unsubdivided | 5 | Rhyolite; Ser, Cbz | Host | |
| Vein | 6 | Qc; Gt, +/- Py | Contains |
Dec 07, 2005 (R Degagne) - Bedrock in the area consists mainly of variably glacial drift covered weakly metamorphosed (greenschist or lower metamorphic facies) pillowed and massive tholeiitic basaltic and related rocks of the (Archean) Stoughton-Roquemaure Group (Satterly 1952; Johnstone and Trowell 1985, 1984; Jensen and Baker 1986; Johnstone and Steele 1989; Johnstone 1987; Vagners 1984; McClenaghan et al. 1988, 1987; Steele 1988). The area occupies part of the southern limb of the McCool Hill Syncline (Johnstone 1987, Satterly 1952) about 1.3 km northeast of the southeast striking Contact Fault, a narrow zone of carbonatization and sericitization which separates Stoughton-Roquemaure Group volcanic rocks to the northeast from weakly metamorphosed (greenschist or lower metamorphic facies) (Archean) Porcupine Group turbiditic sediments to the southwest. Local volcanic stratigraphy strikes east southeast, dips steeply north (with locally developed overturned sections dipping steeply south) and faces north. The quartz veins examined by the present writer are hosted by a narrow (less than 100 m wide) rhyolite horizon which is flanked on both sides by mafic tholeiitic flow rocks. Intrusive rocks in the area include a mafic to ultramafic sill-like mass within the Munro Fault Zone (a few hundred metres northwest of the property) from which asbestos was mined by Canadian Johns-Manville Co. Ltd., and two narrow, north striking diabase dikes of the (Proterozoic) Matachewan swarm (Heaman 1989). One of these Matachewan quartz diabase dikes is exposed a few tens of metres west of the quartz veins while the other occurs a few hundred metres to the northeast (Satterly 1952).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue | ||||
| 3 | Sericite | Economic | Gangue | ||||
| 4 | Goethite | Economic | Gangue | ||||
| 5 | Pyrite | Economic | Gangue | ||||
| Carbonate | Alteration | Carbonatization | 1 | Strong | Massive | ||
| Sericite | Alteration | Sericitization | 2 | Strong | Massive | ||
| Goethite | Alteration | Unknown | 3 | Weak | Replacement |
Dec 07, 2005 (R Degagne) - Pitted quartz-carbonate masses and veinlets hosted within and confined to yellow weathering (sericitic) rhyolite occur a few dozen metres east of the access road leading northeast from the Croesus Mine shaft area. The rhyolite exposure occurs at the base of a prominent, north facing scarp exposing north facing pillowed tholeiitic basalt. The quartz-carbonate masses and variably continuous veins consist of coarse grained bull quartz material with waxy lustre which contain less than 2% of spongy goethite and/or iron oxides replacing sulfide minerals. No megascopically visible alteration marginal to the quartz-carbonate masses were apparent to the present writer. (Bath, A. C., OFR 5735 V.1, p.306).
Dec 07, 2005 (R Degagne) - The area occupies part of the southern limb of the McCool Hill Syncline (Johnstone 1987, Satterly 1952) about 1.3 km northeast of the southeast striking Contact Fault, a narrow zone of carbonatization and sericitization which separates Stoughton-Roquemaure Group volcanic rocks to the northeast from weakly metamorphosed (greenschist or lower metamorphic facies) (Archean) Porcupine Group turbiditic sediments to the southwest. The rhyolite exposure occurs at the base of a prominent, north facing scarp exposing north facing pillowed tholeiitic basalt. The quartz-carbonate masses and variably continuous veins consist of coarse grained bull quartz material with waxy lustre which contain less than 2% of spongy goethite and/or iron oxides replacing sulfide minerals. No megascopically visible alteration marginal to the quartz-carbonate masses were apparent to the present writer. (Bath, A. C., OFR 5735 V.1, p.306).
| Rank | Classification |
|---|---|
| 1 | Hydrothermal |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | 100 |
Date: Feb 03, 1997
Geologist: R Degagne
Notes: None of the representative samples obtained from the area were deemed by the present writer to be worthy of assaying. The quartz-carbonate veins and masses in the sericitic rhyolite appear to be of limited extent and only locally developed, were generally only very weakly mineralized with pyrite, and were not associated with shearing. Although rhyolitic horizons in the area are locally characterized by the presence of quartz veins and stringers, some of which are reported to carry anomalous gold tenors (R. Johnstone, geologist, Ontario Geological Survey, pers. comm., 1987), potentially auriferous quartz veins and/or vein systems oriented subparallel to and/or associated with the Munro Fault Zone and/or vein systems oriented at high angle to stratigraphy (as at the Croesus Mine, the Stewart-Abate Mine, the Brown- Munro occurrence, and the Guinea occurrence) may be better gold exploration targets than the King Midas rhyolite hosted hydrothermal veins. Such systems characteristically are associated with carbonatized volcanic rocks and/or shears and may have pyrite, chalcopyrite, pyrrhotite, arsenopyrite, sphalerite and galena developed within and marginal to the auriferous quartz-(carbonate) veins. (Bath, A. C., OFR 5735, V.1, p.306)
Map - Quaternary geology of Matheson area, Cochrane District
Publication Number: P2735 Scale: 1:50,000 Date: 1985
Author: Vagners U.J.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of Munro Township
Publication Number: ARV60-08 Page: 48 Date: 1997
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
Folio - Munro Township, District of Cochrane
Publication Number: GDIF361 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Black River-Matheson Area
Publication Number: OFM0013 Scale: 1:15,840 Date: 1985
Author: Johnstone R.M., Trowell N.F.
Publisher Name:
Location:
Map - Geophysical/geochemical series, Matheson-Black River area, Munro Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane
Publication Number: M80586 Scale: 1:20,000 Date: 1984
Author: Questor Surveys Ltd.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 303-308 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Township of Munro, District of Cochrane, Ontario
Publication Number: M1951-05 Date: 1997
Author: Satterly J., Hogg N.
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 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Article - Black River-Matheson economic geologist program
Publication Number: MP126.058S Page: 301-311 Date: 1997
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Article - Precambrian geology of the Black River-Matheson (BRIM) area, District of Cochrane
Publication Number: MP126.056S Date: 1997
Author: Johnstone R.M., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
Article - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP140.294 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
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