Ontario Geological Survey
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MDI32D05NW00163
| Record Name(s) | Spotted Dog - 1991, Cameron-Godfrey - 1991, Randa - 9999, Stairs - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-09 |
| Date Last Modified | 2023-Aug-14 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Elliott
Latitude: 48° 25' 24.26" Longitude: -79° 52' 31.55"
UTM Zone: 17 Easting: 583198.515 Northing: 5363972.591 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 32D05NW
Point Location Description: Pits
Location Method: Conversion from MDI
Access Description: A point 2.85 km south and 0.76 km east of the northwest corner of Elliott Township. Access to within about 400 m of the Spotted Dog occurrence may be made by 2 wheel drive vehicle via gravel roads accessible east of Matheson from Highway 101. Best access to outcrop on which pits and trenches have been blasted is from the north, by following blazed claim lines from a gravel road to small outcrop knobs located west of the north part of Ghost Lake (as indicated by Jensen 1971, 1978).
1939: Claims on which the Spotted Dog occurrence was located were known as the 'Cameron-Godfrey'. 1946: C.L. Heath of Heath and Sherwood Ltd. examined the occurrence. At this time, G. Cameron held claims on which the occurrence was located. 1947: W.D. Stroud, in a letter to Sylvanite Gold Mines Ltd. dated August 5, 1947 (assessment files), reported that '...the heavily mineralized 'spotted dog' on claim no. 37113 gave 2.80 dwts [0.14 ounce of gold per ton] from two grab samples about 1.5 feet across the vein' (p.2). 1962: The area was restaked. Ownership of those claims on which the Spotted Dog occurrence was located was transferred to I.C. Stairs, of Bathurst, New Brunswick. Prospecting and geological mapping. 1985: Perrex Resources Inc. completed VLF electromagnetic and magnetic surveys of the occurrence as part of a survey of a large claim block in Elliott Township'.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.8854 | 32D05NW0022 | 32D05NW0022 |
| 2.8657 | 32D12SW0066 | 32D12SW0066 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Metamorphism Grade: Greenschist
Dec 07, 2005 (C Salo) - Geological mapping (Jensen 1982, 1978, 1971; Jensen and Langford 1985; Jensen and Baker 1986; Johnstone and Steele 1989) indicates that the area is underlain mainly by weakly metamorphosed (greenschist or lower metamorphic grade) subaqueously deposited tholeiitic volcanic and volumetrically minor interflow sedimentary and/or tuffaceous rock of the (Archean) Kinojevis Group. Local volcanic stratigraphy strikes northeast, dips steeply, faces south, and occupies part of the north limb of the east striking and east plunging Blake River Synclinorium. Although bedrock exposure in the occurrence area is rare (more than 90% of the bedrock in the area is drift covered (Baker et al. 1982; McClenaghan et al. 1988, 1987; Steele 1988)), local bedrock strike is well defined by magnetic surveys (OGS 1984; assessment files, Resident Geologist's Office, Kirkland Lake). A recent geophysical survey of Elliott Township (OGS 1984) failed to detect significant bedrock conductors in the occurrence area. A more recent airborne survey completed by Perrex Resources (assessment files) was interpreted to have identified a 7,000 foot long discontinuous (stratigraphic) conductive horizon to be coincident with the location of the Spotted Dog occurrence.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Variolitic Basalt | Pillow | Near |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Inflow Sediments | Host | |
| Vein | 3 | Quartz-Calcite | N/A |
Dec 07, 2005 (C Salo) - AB-86-169: Trench grab. Mottled grey/green weakly magnetic variolitic basalt. Light green to purple (hematitic?) leucocratic pea sized isolated and coalescing varioles are set in a microcrystalline dark green matrix. Calcite alteration is confined to leucocratic varioles. Thin section examination reveals that the basalt matrix is composed of arcuate, plumose, and frond like brown/green pleochroic pyroxene microphenocrysts supported in a glassy matrix. This sample probably represents a variolitic and quenched hyaloclastic flow top, which has been weakly calcite altered locally (in leucocratic varioles). AB-86-170: Trench grab. Sheared and sulfidic interflow material. Very dark green to black, microcrystalline, magnetic and containing 3-5% of less than 0.5 mm size disseminated and fracture controlled pyrite and chalcopyrite blebs. This sample is composed of strained, foliated, and brecciated fragments of variolitic basalt, microcrystalline mafic material of indeterminate origin, and possibly brecciated faintly bedded (primary) grey chert horizons. The sample contains microveinlets of white quartz which have developed around them diffuse halos of calcite alteration and 2-3 cm wide calcite breccia veins. AB-86-171: Outcrop grab. Pillowed variolitic basalt. Mottled green and magnetic, this sample displays both isolated and coalesced 2-4 mm size varioles. Coalesced leucocratic variolitic domains may form continuous concentric nested shells near pillow selvages. Alteration is confined to calcite filled veinlets which are confined to leucocratic variolitic domains (in this sample, coalesced varioles) and irregularly developed and irregularly oriented fractures which are calcite filled.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Calcite | Economic | Gangue | ||||
| 2 | Chlorite | Economic | Gangue | ||||
| 3 | Quartz | Economic | Gangue | ||||
| 4 | Hematite | Economic | Gangue | ||||
| 5 | Pyrrhotite | Economic | Gangue | ||||
| 6 | Pyrite | Economic | Gangue | ||||
| Chlorite | Alteration | Chloritic | 1 | ||||
| Calcite | Alteration | Carbonatization | 2 |
Dec 07, 2005 (C Salo) - Partly caved and detritus filled trenches and blasted rock blocks occur west of Ghost Lake on outcrop which data in the ass. files indicates to be the site of the Spotted Dog occ. Bedrock consists of weakly magnetic to magnetic grey/green pillowed variolitic basalt and hyaloclastite which may contain 1-4% of combined dissem. po, py, and cp. A narrow (less than 1 foot wide) sulfidic 'vein' is rpted (ass. files) to be present at the occ., but no evidence of this 'vein' was found by the present writer. It may have been exposed once by trenches, but these are now caved and/or detritus filled. The sulfide 'vein' is described (ass. files) to be shallowly (25 degrees) NW dipping (and therefore NE striking) and to be spatially associated with a steeply (80 degrees) NW dipping (and therefore NE striking) shear which was hypothesized by previous invest. (ass. files) to intersect the sulfide 'vein' at a shallow depth. Most exposed bedrock consists of variolitic basalt and/or basalt breccia or hyaloclastite. One trench sample consists of sheared, var. calc altered, and q-calc veined sulfidic epiclastic interflow material. This was the only sample (of three which were analyzed by the Bath, 1990 which returned an anomalous (greater than 0.01 ounce of gold per ton) gold assay. Additional grab and/or chip and/or channel sample assays from the occ. are rpted (ass. files) to average from trace to 0.14 ounce of gold per ton; most of these appear to have been obtained from the sulfidic 'vein' and/or shear which are now no longer exposed. Coincidence of an EM bedrock conductor and a (regional scale) magnetic anomaly with the Spotted Dog occ. suggests that the occ. is near and/or within an interflow sedimentary and/or epiclastic horizon developed between older dominantly Fe-tholeiitic basalt and younger dominantly Mg-tholeiitic basalt. Var. sulfidic and var. sheared interflow and/or basalt flow material should be expected to occur at such a site.
File - Resident Geologist files KL-0318, KL-2336, KL-2552
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Geological series, Quaternary geology of the Magusi River area, Cochrane and Timiskaming districts
Publication Number: P2483 Scale: 1:50,000 Date: 1982
Author: Baker C.L., Steele K.G., Seaman A.A.
Publisher Name: Ontario Geological Survey
Location:
Folio - Elliott Township, District of Cochrane
Publication Number: GDIF350 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Elliot Township, District of Cochrane
Publication Number: P0705 Scale: 1:15,840 Date: 1997
Author: Jensen L.S.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Map - Geological series, Precambrian geology of the Magusi River area, Cochrane and Timiskaming districts
Publication Number: P2434 Scale: 1:63,360 Date: 1982
Author: Jensen L.S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 1365-1372 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, preliminary results of bedrock samples from the sonic drilling, 1985, Lake Abitibi-Matheson area, District of Cochrane
Publication Number: P2986 Scale: 1:100,000 Date: 1986
Author: Jensen L.S., Steele K.G., McClenaghan M.B., Baker C.L.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology and petrogenesis of the Archean Abitibi belt in the Kirkland Lake area, Ontario
Publication Number: MP123 Date: 1985
Author: Jensen L.S., Langford F.F.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, bedrock samples from the sonic drilling program 1987, Matheson area, District of Cochrane
Publication Number: P3114 Scale: 1:100,000 Date: 1989
Author: Johnstone R.M., Sutcliffe R.H., Steele K.G., Baker C.L., McClenaghan M.B.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Thackeray, Elliott, Tannahill, and Dokis townships, District of Cochrane
Publication Number: R165 Date: 1978
Author: Jensen L.S.
Publisher Name: Ontario Geological Survey
Location:
Article - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP136.294 Page: 200-214 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
Map - Geophysical/geochemical series, Matheson-Black River area, Elliott Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane
Publication Number: M80609 Scale: 1:20,000 Date: 1984
Author: Questor Surveys Ltd.
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:
Map - Thackeray and Elliott townships, Cochrane District
Publication Number: M2368 Scale: 1:31,680 Date: 1977
Author: Jensen L.S.
Publisher Name: Ontario Geological Survey
Location:
Article - Reconnaissance till sampling program, Matheson-Lake Abitibi area, District of Cochrane
Publication Number: MP141.081 Page: 472-477 Date: 1997
Author: Steele K.G.
Publisher Name: Ontario Geological Survey
Location:
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