Ontario Geological Survey
Permanent Link to this Record:
MDI52O04NW00007
| Record Name(s) | Ferdinand Lake - 1969, Fawthrop Lake - 1969, Hager-Gloster Property No. 1 - 1969 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1986-Oct-15 |
| Date Last Modified | 2024-Mar-22 |
| Created By | |
| Revised By |
Primary Commodities: Molybdenum
Secondary Commodities: Lithium
Township or Area: Ferdinand Lake Area
Latitude: 51° 12' 40.06" Longitude: -91° 53' 42.51"
UTM Zone: 15 Easting: 577174.13 Northing: 5673883.42 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52O04NW
Point Location Description: Mo symbol on OGS map P2346
Location Method: Data Compilation
Access Description: Located 136 km ENE of Red Lake and accessible only by helicopter. There are no lakes nearby large enough for float-equipped plane. The power line from Ear Falls to Pickle Lake lies 2.5 km to the south.
1968: showing discovered by a trapper. 1969: property staked by A. Hager and M.E. Gloster, then optioned to Madsen Red Lake Gold Mines, who explored this property, carrying out prospecting, trenching and diamond drilling (2 holes - No.1 & 2 / 219 ft total) with a light drill. 1973: Umex Inc. conducted a regional aeromagnetic survey (Matfry 'C').
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63E.22 | 52O04NW0005 | 52O04NW0005 |
| 10 | 52O04NW8966 | 52O04NW8966 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Birch-Uchi
Geological Age: Archean
Jun 21, 2007 (Mark Puumala) - The Fawthrop-Senior Lakes area is underlain by a narrow (1.1 to 3.9 km wide) east-west-trending supracrustal rock sequence that represents an eastern extension of the Birch-Uchi Greenstone Belt. Sage and Breaks (1982) indicate that the belt is dominated by mafic to intermediate metavolcanic rocks, with only local occurrences of felsic to intermediate metavolcanic and metasedimentary rock. Mafic to ultramafic intrusions have been mapped in the area between Fawthrop and Senior Lakes, while east-west-striking quartz and/or feldspar porphyry dikes are reported to be common in the eastern portions of the belt. The supracrustal rocks are bounded to the north and south by large granitoid intrusions. Sage and Breaks (1982) report that foliation in the Fawthrop-Senior Lakes area generally strikes approximately east-west, and that the supracrustal rocks form a westward-plunging (30 degrees) synform structure. It has also been interpreted that the supracrustal rocks in this belt were likely to have once formed a single continuous sequence eastward linked to similar rocks in the Wesleyan Lake area at the west end of Meen-Dempster Greenstone Belt.
Aug 13, 2020 (Bill Paterson) - Property lies just north of the Lake St. Joseph Fault that forms the Uchi-English River sub-province boundary. Geology comprised mainly of interbedded (mafic to intermediate) volcanic rocks and sedimentary rocks. The large gabbroic Papaonga Pluton lies immediately to the northwest.
| Rock Type | Rank | Composition | Texture | Relationship | Tonalite | 1 | Trodhjemite | Adjacent |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent | ||
| Pegmatite | 3 | Pegmatitic Granodiorite-Monzonite | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Molybdenite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore |
Jun 21, 2007 (Mark Puumala) - According to Sage and Breaks (1982), the Ferdinand Lake occurrence is located near the contact between mafic metavolcanic rocks of the Birch-Uchi greenstone belt to the south with massive to foliated granitic rocks to the north. Molybdenite mineralization occurs within the intrusion, and within narrow felsic dikes that concordantly intrude the mafic metavolcanic rocks. Sage and Breaks (1982) indicate that the mineralized felsic dikes vary in width from 1 to 5 m and consist of pegmatitic, leucocratic, biotite granodiorite to quartz monzonite. Mineralization within the larger granitic intrusion (trondhjemite) north of the metavolcanic contact is localized in an approximately 3 m wide biotite-rich zone that contains a 45 cm wide quartz vein that is oriented parallel to foliation. Late pegmatite intrusions are reported by Sage and Breaks (1982) to cross-cut the trondhjemite at the eastern end of the showing. Mineralization is reported by Innes (1969) to occur in an approximately 9 to 12 m wide zone having a strike length (east-west) of approximately 60 m (exposed by 9 trenches). Sage and Breaks (1982) describe mineralization in the pegmatite dikes as consisting of less than 1% coarse-grained molybdenite that occurs in clots and clusters up to 2.5 cm in diameter, frequently in association with segregations of yellow-green muscovite. The most significant mineralization is reported to occur in a narrow (1 cm wide) zone exposed in a series of trenches at the contact between the quartz vein and the biotite-rich zone within the trondhjemite intrusion. The mineralized zone is reported by Sage and Breaks to contain 20-30% molybdenite. Notable assays reported from this zone include 0.36% Mo in a grab sample collected by Sage and Breaks (1982), 2.68% MoS2 in a grab sample collected by Innes (1969), and 0.96% MoS2 over 0.64 m in Madsen Red Lake Gold Mines ddh No. 2 (AFRI# 52O04NW8966). Significant MoS2 assays were also reported from representative muck samples collected across the mineralized zone by Innes (1969). Sage and Breaks (1982) also reported anomalous lithium values of 0.05 to 0.5% from an emission spectrographic analysis.
| Rank | Classification |
|---|---|
| 1 | Porphyry |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
Map - Cat Lake-Pickle Lake, geological compilation series, Kenora and Thunder Bay districts
Publication Number: M2218 Scale: 1:253,440 Date: 1976
Author: Sage R.P., Breaks F.W., Troup W.R.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay
Publication Number: R207 Page: 47-49, 218 Date: 1982
Author: Sage R.P., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology of the Ferdinand Lake area, eastern part, Kenora District, Patricia Portion
Publication Number: P2346 Scale: 1:15,840 Date: 1980
Author: Wallace H.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Ferdinand Lake area, District of Kenora, Patricia Portion
Publication Number: MP109 Page: 9 Date: 1983
Author: Wallace H.
Publisher Name: Ontario Geological Survey
Location:
Article - Red Lake District
Publication Number: MP033.001 Page: 18-19 Date: 1997
Author: Riley R.A.
Publisher Name: Ontario Dept. of Mines
Location:
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