Ontario Geological Survey
Permanent Link to this Record:
MDI52F02NW00002
| Record Name(s) | Aronson Lake - 1984 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Dec-08 |
| Date Last Modified | 2022-Aug-04 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Mang Lake Area
Latitude: 49° 14' 32.06" Longitude: -92° 58' 5.6"
UTM Zone: 15 Easting: 502313.103 Northing: 5454385.306 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F02NW
Point Location Description: General
Location Method: Conversion from MDI
Access Description: The occurrence, 60 km South of Dryden, is on one island and on the peninsula at the northwest end of Aronson Lake, immediately southeast of lower Manitou Lake. The occurrence may be reached via Hwy 502, south from Dryden. At 108 km from Dryden, a 150 m long portage from the west side of the highway leads to the south end of Vickers Lake. Aronson Lake is reached by water, via 15 km journey north on Vickers lake, and a portage into Weasel and Aronson lakes. An area on the peninsula has been stripped by Jalna Resources after they discovered sheared, pyritic chert. (OFR 5731, p.23)
1984-1989: Jalna Resources conducted geological, ground VLF-EM, magnetic and IP surveys, and rock sampling. 1989: The occurrence is staked by R. Fairservice, who carried out sampling.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Arsenopyrite | Economic | Ore | ||||
| 10 | Chalcopyrite | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore | ||||
| 20 | Pyrrhotite | Economic | Ore |
Aug 04, 2022 (Q Unknown) - The occurrence is underlain by clastic metasediments of the Etta Lake group (Blackburn 1976, 1982; Berger 1989), interbedded with plagioclase phyric metabasalt. The metasediments consist of interbedded siltstone, mudstone and minor chert. The gossan zone has been extended by Jalna Resources for a minimum length of 800 m and a width of 15 to 100 m. Structural Geology: Bedding in the metasediments strikes 020° and dips 75° to the southeast. Flame structure and cross bedding indicate the bedding to face west. Narrow shear zones strike at 037°, and dips 88° to the southeast, and the rotation of the schistosity into the shear fabric indicates a sinistral component of strike-slip movement. The shear zones are characterized by semi-massive sulphides with or without quartz veining. The very fine grained sulphides consists of 1 to 50%, pyrite with traces of chalcopyrite and arsenopyrite. According to Jalna Resources, who most recently investigated the occurrence, pyrrhotite is commonly present. On the peninsula a 16 cm semi-massive sulphide zone is exposed in the stripped area over a length of a few metres. On the island immediately south of the peninsula, a quartz vein occurs adjacent to a semi-massive sulphide zone of unknown width along the edge of the west shore over a minimum length of 15 m. The 11 cm wide smokey grey quartz vein contains up to 10% pyrite and 1%, of chalcopyrite. Six grab samples were taken by the author. The mineralized quartz vein on the island analysed 3410 ppb gold whereas the unmineralized vein returned 1780 ppb gold on analysis. The best gold assay came from a grab sample of rusty, brecciated and sericitized chert containing fine disseminated pyrite which yielded 0.57 ounce of gold per ton (Table 1). (OFR 5731, p.23, 24) 1989: One grab sample taken from the quartz vein returned 10,261 ppb gold (R. Fairservice, prospector, Kenora, personal communication 1990). (OFR5731, p. 24, 25)
MonoMap - Geology of the Lower Manitou-Uphill lakes area, District of Kenora
Publication Number: R142 Date: 1976
Author: Blackburn C.E.
Publisher Name: Ontario Division of Mines
Location:
Article - Geology of the Manitou Stretch area, District of Kenora
Publication Number: MP141.020 Page: 145-148 Date: 1997
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Property visits by the Dryden area mineral commodity geologist, 1989
Publication Number: OFR5731 Page: 23-25 Date: 1990
Author: Delisle P.C.
Publisher Name: Ontario Geological Survey
Location:
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