Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI52J02SW00011| Deposit Name(s) | McKinnon Lake - 1983, McKinnon Vein - 2014, Jumping Lake Property - 2008 |
|---|---|
| Related Deposit Type | None |
| Deposit Status | occurrence |
| Date Created | 1995-May-29 |
| Date Last Modified | 2020-Apr-14 |
| Created By | Q Unknown |
| Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Fourbay Lake Area
Latitude: 50° 1' 6.85" Longitude: -90° 52' 48.34"
UTM Zone: 15 Easting: 651863 Northing: 5542849 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52J02SW
Point Location Description: Vein sampling on map in Assessment report 20000004419
Location Method: based on assessment
Source Map: OGS 1981 MAP 2456 NORTH ARM OF STURGEON LAKE
Sources Map Scale: 1:25 000
Access Description: A bulldozer trail called the Jumping Lake road joins the Six Mile Lake road 4.5 km south of its junction with Hwy. 599. The Jumping Lake trail runs south to McKinnon Lake. A walking path loops around the west end of Jumping Lake to the west shore of a small pond called McKinnon Lake. The showing is located 150 m south and 100 m east on a small creek which flows out of the south end of McKinnon Lake. The showing was cut out in 1987 and may be overgrown in part. Alternatively, a light aircraft may be able to land on McKinnon Lake.
1983: Loydex Resources carried out sampling, trenching, mapping, and VLF and magnetic surveys. 2008-9: Aur Lake Exploration carried out prospecting, sampling, and stripping. 2010: Aur Lake Exploration carried out prospecting, a soil gas hydrocarbon survey, and IP, magnetometer and VLF-EM surveys. 2011: Tetra Tech carried out a property visit and sampling, as data verification for Aur Lake Exploration. 2014: Tasca Resources carried out prospecting and sampling. 2016: Tasca Resources carried out prospecting.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.43394 | 20000004419 | Open |
| 2.44502 | 20000005959 | Open |
| 2.49601 | 20000006375 | Open |
| 2.50657 | 20000007073 | Open |
| 2.48183 | 20000005167 | Open |
| 2.49601 | 20000006375 | Open |
| 2.55460 | 20000014549 | Open |
| 52J02SW BS-0050 | 52J02SW0042 | Open Open |
| 63.4332 | 52J02SW8635 | Open |
| 2.57429 | 20000013517 | Open |
Province: Superior
Subprovince: Wabigoon
Belt: Sturgeon Lake
Geological Age: Archean
01/31/2000 (R Tuomi) - The showings are located in mafic metavolcanic rocks which have been sheared and mineralized with quartz veining. Trenches have been excavated along this shearing and to the north of the zone the rocks are conbonatized and contain pyrite. Many narrow quartz carbonate veinlets occur in a zone 5 to 8 m wide. Shearing near the lake dips vertically and strikes 010 degrees. A later white quartz cross-cuts the quartz-carbonate and dips 30 degrees to 60 degrees to the east. Four areas were stripped and washed in 1987. Surface sampling ran from trace to 0.56 ounce gold per tonne but only 3 out of 12 samples ran more than 0.03 ounce gold per tonne.
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| vein | 1 | quartz carbonate | host | |
| mafic metavolcanics | 2 | host | ||
| vein | 3 | quartz | near | |
| porphyry | 4 | quartz-feldspar | near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | gold | economic | ore | ||||
| 2 | chlorite | economic | ore | ||||
| 3 | pyrite | economic | ore | ||||
| 4 | pyrrhotite | economic | ore | ||||
| 1 | carbonate | economic | gangue | ||||
| 2 | quartz | economic | gangue | ||||
| carbonate | alteration | carbonatization | 1 | unknown | disseminated | ||
| chlorite | alteration | chloritic | 2 | unknown | disseminated |
02/10/2000 (R Tuomi) - Assays up to 0.56 opt Au (grab) and 0.13 opt over 16 in. (chip).
04/14/2020 (T Pettigrew) - The McKinnon Vein is 10 cm to 2 m wide and strikes visibly for 190 m, trending at about 20 degrees, with both ends open. The main vein consists of vuggy white quartz hosted by near-massive jointed mafic flows and intrusives. It is hosted by a shear structure but is also influenced by the local joint sets. The vein is strongly boudinaged. Pyrite is seen within the wallrock and within the quartz in rare instances. Coarser quartz, and quartz within the vein, appear to correlate with the best gold values. Six of the seventeen channel cut samples collected in 2014 returned values of over 1 g/t Au, to a high of 12.16 g/t Au over 0.2 m (Assessment report 20000014549). Samples collected by Aur Lake Exploration in 2008 returned values of 330 up to 8259 ppb Au from quartz veins in mafic metavolcanics, including some from a sheared zone (Assessment report 20000004419). Sample 49, collected in 2009 by Aur Lake Exploration, returned 24.041 ppm Au from a yellow quartz-carbonate vein (Assessment report 20000005959).
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