Ontario Geological Survey
Permanent Link to this Record:
MDI52C09NE00006
| Record Name(s) | Hidden Treasure - 1899, Plymouth - 1990, Hidden Treasure East and West Shafts - 1899 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Dec-08 |
| Date Last Modified | 2022-Feb-18 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Factor Lake Area
Latitude: 48° 44' 53.26" Longitude: -92° 9' .16"
UTM Zone: 15 Easting: 562480.53 Northing: 5399805.54 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52C09NE
Point Location Description: No exact location is given, except 2.4 kilometres from the Mayflower Mine, on claims HP278 and HP279
Location Method: Conversion from MDI
Access Description: Access is via Highway 11, then by foot trail (Schnieders and Dutka 1985).
1899: Work by Rainy River Development Company of London, the same company that owned the Mayflower Mine. Shaft sunk on HP278 to 19 m with a 5 m crosscut. 1934: The Boss Syndicate took over the property and carried out prospecting and sampling. 1936: Animikie Mines Ltd. carried out reconnaissance work. 1945: Andowan Mines Ltd. conducted linecutting and drilled 3 DDH totalling 198 m. 1987: Noranda Exploration Company carried out mapping, humus sampling, stripping and channel sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.4809 | 52C09NE0010 | 52C09NE0010 |
| 2.10997 | 52C09NE0009 | 52C09NE0009 |
Province: Superior
Subprovince: Wabigoon
Belt: Calm-Lac des Mille Lacs
Geological Age: Archean
Dec 07, 2005 (P Hinz) - Fumerton (1981) shows a shaft approximately 2.4 kilometres west-northwest of the Mayflower Prospect, possibly the Hidden Treasure Mine. The country rock consists of metavolcanic flows, porphyritic flows, tuff, tuff-breccia, chlorite schist and intercalated felsic metavolcanics, metasediments and ironstone. Minor felsic porphyritic intrusions are present in the area. The occurrence is located approximately 1 kilometre north of the Quetico fault.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Felsic lava flow-unsubdivided | 2 | Footwall | ||
| Schist-Unsubdivided | 3 | Hanging Wall | ||
| Ironstone-unsubdivided | 4 | Footwall |
Dec 07, 2005 (P Hinz) - The occurrence was described by Fumerton (1985): The quartz veins on this former property are near a zone of shearing related to the Little Turtle Fault, and near a contact between mafic to intermediate metavolcanics and felsic metavolcanics with numerous intercalated banded ironstone and siltstone layers.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Galena | Economic | Ore | ||||
| 5 | Graphite | Economic | Ore |
Dec 07, 2005 (P Hinz) - Fumerton (1985) made note of the mineralization: Traces of gold were found in most veins and shear zones. Some quartz veins, mineralized with pyrite and sparse chalcopyrite, or shear zones with graphite contained up to 0.02 ounce gold per ton for up to 1.5m. For the Hidden Treasure South - best assay: 225 gpt Ag and 0.69 gpt Au from surface.
Sep 14, 2020 (Therese Pettigrew) - The quartz vein is only exposed near the edge of the shaft. The vein occurs at the contact between mafic metavolcanics and a small band of felsic metavolcanics which is silicified and sericitized. The vein contains 1-2% pyrite. A grab sample taken by Noranda in 1987 of pyritized mafic metavolcanics assayed 12.34 g/t Au (Assessment report 52C09NE0009). Andowan Mines drilled 3 holes totalling 198 metres, mineralized with pyrite, chalcopyrite and graphite. One section assayed 0.02 oz/t Au (0.68 g/t Au) across 5 feet (1.5 metres) (Fumerton, 1981). The Boss Syndicate found a new 6 foot wide vein just south of the CNR track and 400 feet south of the Hidden Treasure shaft. The vein consists of highly mineralized fractured quartz with frequent specks of visible gold. A number of assays were obtained, ranging from about $3 to $81.90 per ton. The vein was traced 900 feet to a second outcropping (Daily Times-Journal, Aug. 17, 1934, p. 12). Gold was panned freely on the property of the Boss Syndicate (Daily Times-Journal, Nov. 12, 1934, p. 10). W.A. Preston, who was the original owner of the Hidden Treasure, made the statement that in sinking the shaft, they ran into free gold to such an extent that he believed he had found the Treasure Fortuna (Daily Time-Journal, April 23, 1937, p. 18). Trenching completed at the Boss mine suggested that the zone extended northward more than expected. Twenty feet north of the main break, ore was found that yielded values of$10 to $23 per ton in terms of gold (with gold at $34.98 an ounce) (Daily Times-Journal, June 18, 1937, p. 18, Lavigne and Scott, 1995). In 1987, Noranda stripped and channel sampled the mineralized zones at the two shafts north of the CNR tracks. These shafts are 400 m apart and the western shaft is 120 m north of the CNR tracks. The mineralized zone has been stripped east and west of the shaft for a total distance of 70 m. The mineralization is hosted by an east-striking, quartz-rich felsic unit which has been brecciated and silicified. The felsic rock has a maximum width of 3 m, and attains a width of 50 m to the east, where it is unmineralized. This gives the appearance that the mineralized area is in the neck of a boudin. The wall rock is locally altered to an assemblage of carbonate, sericite, and pyrite. The highest value from channel sampling, 1.37 g/t Au, came from this altered wallrock. At the eastern shaft, the felsic unit has been exposed over a strike length of 120 m. The largest zone of mineralization is 4 m by 16 m and consists of carbonate-altered felsic rock and containing large quartz veins and quartz flooding. The mineralized area is localized to where the felsic unit is pinched down to 3 m from 9 m (Lavigne and Scott, 1995).
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:
Mono - Property visits and reports of the Atikokan economic geologist, 1979-1983, Atikokan geological survey
Publication Number: OFR5539 Scale: Date: 1985
Author: Schnieders B.R., Dutka R.J.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of northwest Ontario, parts 1 and 2
Publication Number: ARV10.004 Scale: Date: 1998
Author: Bow J.A., Carter W.E.H.
Publisher Name: Ontario Bureau of Mines
Location:
Map - Geological series, Precambrian geology of the Calm Lake area, Rainy River District
Publication Number: P2405 Scale: 1:15,840 Date: 1981
Author: Fumerton S.L., Bumgarner E.L.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Calm Lake area, District of Rainy River
Publication Number: R226 Scale: Date: 1985
Author: Fumerton S.L.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 1994, Resident Geologists
Publication Number: OFR5921 Scale: Date: 1995
Author: Baker C.L., Dressler B.O., Laderoute D.G., Newsome J.W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2002, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District
Publication Number: OFR6112 Scale: Date: 2003
Author: Schnieders B.R., Scott J.F., Smyk M.C., O'Brien M.S.
Publisher Name: Ontario Geological Survey
Location:
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