Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002345| Deposit Name(s) | Lafontaine-princess Lake - 2004 |
|---|---|
| Deposit Status | occurrence |
| Date Created | 2019-Sep-30 |
| Date Last Modified | 2019-Sep-30 |
| Created By | T Pettigrew |
| Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Summers
Latitude: 49° 35' 37.8" Longitude: -88° 0' 41.07"
UTM Zone: 16 Easting: 426907 Northing: 5493964 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52H09SE
Point Location Description: Sample 05-WAL-18 location from Assessment report 20000002034
Location Method: data compilation
1981: Gold Fields Resources Canada Ltd. carried out VLF-EM and mag surveys. 2003: S. Lafontaine carried out prospecting. 2004: S. Lafontaine carried out stripping, trenching, sampling. 2005: S. Lafontaine carried out prospecting, stripping and sampling. 2007: Roxmark Mines Ltd. carried out stripping and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.33912 | 20000002034 | Open |
| 2.28408 | 20000000226 | Open |
| 2.38393 | 20000003404 | Open |
| 2.4213 | 42E12SW0082 | Open |
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-geraldton
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| mafic metavolcanics | 1 | pillowed | adjacent | |
| iron formation | 2 | sulphidized, oxide-facies, cherty | host | |
| vein | 3 | quartz-carbonate | host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | pyrite | economic | ore | ||||
| 2 | arsenopyrite | economic | ore | ||||
| 3 | chalcopyrite | economic | ore |
09/30/2019 (T Pettigrew) - The main gold-mineralized zone on the Lafontaine-Princess Lake property is exposed in a 12 m wide by 190 m long stripped area along a prominent southwest-trending, north-facing ridge. The exposed bedrock consists of moderately to intensely sheared and gossanous, pillowed metavolcanic rocks that strike approximately 068° and dip steeply north. Highly stretched pillows were noted along a nearby, north-facing ridge, outside of the main stripped area. Scattered throughout the metavolcanic host rocks are bands of sulphidized, oxide-facies, cherty, banded iron formation, locally crosscut by quartz-carbonate veins. Sulphide mineralization associated with the iron formation consists of lenses or seams of coarse-grained, euhedral arsenopyrite and massive, fine-grained pyrite up to 1 cm thick. The mineralized zone averages 1% finely disseminated arsenopyrite, pyrite and minor chalcopyrite. Grab samples collected by staff of the Thunder Bay North Resident Geologist's Office during a 2005 property visit returned up to 5.27 g/t Au from sulphide-rich, iron formation. A sample collected from sheared mafic metavolcanic rock returned 303 ppb Au (Smyk et al., 2006). Sample 68931 assayed 0.207 opt Au (7.1 g/t Au) in a chip sample across a zone 2 m wide, mineralized with 60% pyrite, 1% chalcopyrite, and 1% arsenopyrite (Assessment report 20000000226). Sample 05-WAL-18 assayed 5.270 ppm Au and 3.0 ppm Ag (Assessment report 20000002034).
Publication - Report of Activities, 2005, Resident Geologist Program, Thunder Bay North District, p. 27-29
Publication Number: OFR6181 Date: 2006
Author: Smyk, M.C., White, G.D., Magee, M.A., Komar, C.L.
Publisher Name: OGS
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