Ontario Geological Survey
Permanent Link to this Record:
MDI52C16SE00004
| Record Name(s) | Calm Lake West - 1992, Calm Lake Shaft - 1912, Glider Showing - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2003-Nov-17 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Factor Lake Area
Latitude: 48° 45' 20.28" Longitude: -92° 8' 54.44"
UTM Zone: 15 Easting: 562588 Northing: 5400641 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52C16SE
Point Location Description: N/A
Location Method: Based on Assessment
Prior to 1912: Calm Lake Gold Mining Company sank a 85 foot shaft. 1991: Gitchee Gumee Gold carried out prospecting and sampling. The prospectors found what appears to be the original 1912 Calm Lake shaft, dump, and pits. 1992: Gitchee Gumee Gold carried out line cutting, geophysics, geological mapping, trenching, channel sampling, and trench mapping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| OP91-261 | 52C16SE0008 | 52C16SE0008 |
| OP92-167 | 52C16SE0007 | 52C16SE0007 |
| 2.15164 | 52C16SE8300 | 52C16SE8300 |
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Fort Frances-Mine Centre
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 |
|---|---|---|---|---|
| Felsic Pyroclastic Breccia | 2 | Pyroclastics | ||
| Ironstone-unsubdivided | 3 | |||
| Quartz Porphyry | 4 | Blue Quartz-Eye Porphyry | Host | |
| Vein | 5 | Quartz-Carbonate | Host |
Sep 14, 2020 (Therese Pettigrew) - The channel sampling and detail mapping revealed a NW-trending sequence of mafic to intermediate metavolcanic pyroclastics and flows with steep north dips intruded by two-phase blue quartz-eye porphyritic tonalite. The blue quartz-eye porphyritic tonalite is massive, light grey on the weathered surface and contains minor carbonate and pyrite and pyrrhotite mineralization. Also, xenoliths of mafic to intermediate flows and tuffs were noted within the porphyry. At 1+25N/1+25W the tonalite has been recrystallized, highly fractured with quartz-carbonate stringers displaying a sugary texture (Assessment report 52C16SE8300).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Sep 14, 2020 (Therese Pettigrew) - The Canadian Mining Journal reported in 1912 that the No. 2 vein was 50 feet wide in the shaft. It contains some free gold in quartz. The No. 3 vein is visible on surface. The Glider Showing is located approximately 730 m due west of the NW corner of Long Lake. Prospecting revealed a wide shear zone system (deformation zone) of highly deformed mafic to felsic pyroclastics with disseminated pyrite, sericite-ankerite-chlorite alteration and numerous quartz-carbonate veining. Initial grab samples from the quartz vein/shear zone system assayed up to 0.341 oz/ton Au (Assessment report 52C16SE0008). The original 1912 shaft is located on a quartz-carbonate vein which parallels the foliation and contains finely disseminated pyrite. This vein is less than 0.3 m wide on surface, but increases in size to 1.0 m at depth and assayed from 500-700 ppb Au. The best assays were obtained from the contact zone between the blue quartz-eye porphyry and the carbonitized mafic metavolcanics in Trench #6 from the channel sampling and assayed 1733 ppb Au across 2.45 m and 891 ppb Au over 1.6 m respectively, with the best assay being 2.175 ppm Au over 0.75 m at the centre of the trench. The best samples in Trench 6 are located at NAD83 Zone 15 562737 mE 5401065 mN (Assessment report 52C16SE8300).
Journal - The Mine Centre Mining District, Ontario; In: Canadian Mining Journal, Vol. 33, No. 17, p. 584
Publication Number: CMJ V33 Scale: Date: 1912
Author:
Publisher Name: Canadian Mining Journal
Location: canadiana.ca
Map - Calm Lake, Rainy River District
Publication Number: M2467 Scale: 1:31,680 Date: 1985
Author: Fumerton S.L., Bumgarner E.L.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Archean Metallogeny of the Mine Centre-Fort Frances Area
Publication Number: R266 Scale: Date: 2000
Author: Poulsen K.H.
Publisher Name: Ontario Geological Survey
Location:
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