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Ontario Geological Survey
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MDI42C13SW00049
| Record Name(s) | Armand Lake Zn - 1991, Norman Property - 1983, Summers Lake (East) Property - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2002-Feb-25 |
| Date Last Modified | 2024-Jun-03 |
| Created By | |
| Revised By |
Primary Commodities: Zinc, Gold
Township or Area: Wabikoba Lake Area
Latitude: 48° 49' 26.43" Longitude: -85° 46' .91"
UTM Zone: 16 Easting: 590507 Northing: 5408625 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42C13SW
Point Location Description: Point 4 on OGS map M2614
Location Method: Data Compilation
Access Description: The Armand Lake zinc occurrence is located approximately 33.5 km south-southeast of Manitouwadge, 1.5 km north of Solong Lake and 675 m south-southeast of the eastern end of Armand Lake. The occurrence is accessible via motor vehicle followed by travel on foot. From Manitouwadge, proceed south along Highway 614 for approximately 40 km to the Twist Lake road. Proceed northeast along the Twist Lake road for approximately 6 km to an unnamed secondary logging road. Proceed south along this unnamed road for approximately 350 m to a skidder trail which accesses the western part of the Armand Lake property. Proceed easterly along this skidder trail and then through the bush for a total of approximately 2.35 km to the vicinity of the occurrence. Zinc-bearing sulphides are exposed in a small, rubble-filled pit located on the top of a hill overlooking a narrow swamp. The occurrence is situated near station 4+60S on line 16+25Eof a grid cut on the property in 1988. When examined in 1991, this grid was in relatively good condition.
1957: Geological mapping; CPR (M. Bartley, T. Page). 1964-1965: Geological mapping; ODM (V.G. Milne). 1976: Line cutting, ground geophysical surveys (HLEM, VLF-EM, MAG); Noranda Exploration Co., Ltd. Although numerous conductors were identified, they were interpreted to be of low quality. 1978-1979: Lake sediment and water geochemical sampling; GSC and MNR. Samples collected from the vicinity of the occurrence contained slightly anomalous amounts of Cu, Pb, Au and Mo. 1983: Flagged grid, geological mapping, lithogeochemical sampling and soil geochemical sampling ; Norman Resources Ltd. Airborne geophysical survey (HLEM, VLF-EM, MAG); Aerodat Ltd. Two strong southwest-trending conductors were located in the vicinity of the occurrence. 1984: Geological mapping; OGS (G.M. Siragusa). Ground geophysical survey (reconnaissance IP and RESISTIVITY); Norman Resources Ltd. A definite IP anomaly, trending east-southeast, was discovered proximal to the occurrence. 1988: Line cutting, geological mapping and soil and rock geochemical sampling; Noranda Exploration Company of Canada Ltd. 1991: Prospecting, stripping and trenching; prospectors B. Fowler and M. Shuman. Lithogeochemical sampling; OGS (D.B. McKay). Reconnaissance till sampling, GSC (I.M. Kettles). Till samples collected in the vicinity of the occurrence contained slightly anomalous amounts of Cu and Zn.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.7411 | 42C13SW0363 | 42C13SW0363 |
| 2.7860 | 42C13SW0138 | 42C13SW0138 |
| 63.4407 | 42C13SW0127 | 42C13SW0127 |
| 2.14654 | 42C13SW0003 | 42C13SW0003 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (R Tuomi) - The Armand Lake zinc occurrence is located in the Wawa Subprovince approximately 16 km northeast of the Hemlo mines. The area surrounding the occurrence is underlain primarily by an east-southeasterly-trending sequence of mafic to felsic metavolcanic and lesser metasedimentary rocks which comprise a portion of the the north limb of the Schreiber-Hemlo greenstone belt (Milne 1968, Map 2147; Siragusa 1985, Map P.2738). These rocks are locally strongly foliated (115 /80 SW) and altered (silicified, sericitized, feldspathized and pyritized), and mineral assemblages indicate they have experienced lower amphibolite facies-grade regional metamorphism (Milne 1968; Barry 1983). In the vicinity of the occurrence, the supracrustal sequence is approximately 3.5 km wide and is bounded to the north and south by granodioritic rocks of the Dotted Lake Batholith and the Musher Lake Pluton, respectively (Milne 1968, Map 2147). The northern portion of the belt is dominated by massive to pillowed basalts which are overlain to the south by intermediate to felsic pyroclastic rocks containing minor metasedimentary interbeds (Klatt 1992). The supracrustal sequence dips steeply to the southwest and has been interpreted to young in the same direction (Milne 1968; Klatt 1992). The occurrence is located near the southern boundary of the belt approximately 500 m north of the contact with the Musher Lake Pluton. When examined in 1991 by D. McKay for the OGS, the occurrence consisted of numerous medium-sized, angular boulders of float exposed along the top of a small hill. The boulders were primarily of mafic metavolcanic composition, but some of the more angular, rusty-weathering ones were composed of fine-grained, locally sericitic, quartz-rich iron formation (possibly a felsic ash/crystal tuff ?) containing up to 10% fine-grained, disseminated grains of pyrite and pyrrhotite.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Near |
|---|---|---|---|---|
| Silicate Ironstone | 2 | Sericitic, Q-Rich | Host |
Dec 07, 2005 (R Tuomi) - The iron formation is fine-grained, locally sericitic, quartz-rich and contains up to 10% fine-grained, disseminated grains of py and po. Blasting and trenching conducted in the area by prospectors B. Fowler and M. Shuman has exposed numerous angular boulders of siliceous, sulphide-bearing, felsic rock (iron formation ?), presumably of local derivation, but failed to expose bedrock.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| Sericite | Alteration | Sericitization | 1 | Weak | Disseminated |
Dec 07, 2005 (R Tuomi) - Grab samples collected from the occurrence in 1991 by prospectors B. Fowler and M. Shuman and submitted to the MNDM for analysis returned assay values which varied from nil to 0.086 ounce Au/ton, nil to trace Ag, 86 to 396 ppm Cu, 100 to 5400 ppm Zn and 84 to 110 ppm Ni. The nature and extent of the zinc mineralization in the vicinity of the occurrence is, at present, unknown.
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Map - Geophysical Series, White Lake, Thunder Bay District, Ontario
Publication Number: Map 2168G Scale: 1:63,360 Date: 1963
Author: Geological Survey of Canada
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/116493
MonoMap - Geology of the Black River area, District of Thunder Bay
Publication Number: R072 Date: 1968
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - White Lake sheet, Thunder Bay District
Publication Number: M2147 Scale: 1:31,680 Date: 1968
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Reconnaissance Geochemical Data for Till Samples from the Manitouwadge Area, Ontario
Publication Number: GSC OF 2616 Date: 1993
Author: Kettles, I.M.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/183942
Map - Manitouwadge-Wawa sheet, geological compilation series, Algoma, Cochrane, Sudbury and Thunder Bay districts
Publication Number: M2220 Scale: 1:253,440 Date: 1972
Author: Milne V.G., Giblin P.E., Bennett G., Thurston P.C., Wolfe W.J., Giguere J.F., Leahy E.J., Rupert R.J.
Publisher Name: Ontario Division of Mines
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Geological series, Precambrian geology, Lumby Lake area, western part, Kenora District
Publication Number: P2828 Scale: 1:15,840 Date: 1985
Author: Jackson M.C., Chevalier P.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral Occurrences in the Manitouwadge Area, Volumes 1, 2 and 3
Publication Number: OFR5906 Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Publication - Regional Lake Sediment and Water Geochemical Reconnaissance Data, Ontario Eastern Shore, Lake Superior; Geological Survey of Canada, Open File 555
Publication Number: GSC OF 555 Date: 1979
Author: Hornbrook, E.H.W., Coker, W.B., Lynch, J.J.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129524
Publication - Regional Lake Sediment and Water Geochemical Reconnaissance Data, Northwestern Ontario; Geological Survey of Canada, Open File 2362
Publication Number: GSC OF 2362 Date: 1991
Author: Friske, P W B; Hornbrook, E H W; Lynch, J J; McCurdy, M; Gross, H; Galletta, A C; Durham, C C
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/132202
Map - Geological Compilation of the Eastern Half of the Schreiber-Hemlo Greenstone Belt
Publication Number: M2614 Scale: 1:50,000 Date: 2000
Author: Muir T.L.
Publisher Name: Ontario Geological Survey
Location:
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