Ontario Geological Survey
Permanent Link to this Record:
MDI31C12NE00022
| Record Name(s) | St. Joe - 1981, Keller Bridge - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1981-Sep-25 |
| Date Last Modified | 2022-Apr-04 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Madoc
Latitude: 44° 37' 33.59" Longitude: -77° 32' 43.98"
UTM Zone: 18 Easting: 298069.74 Northing: 4944556.99 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C12NE
Point Location Description: East end of purple coloured outcrop 7A NW of Keller Bridge.
Location Method: Conversion from MDI
Access Description: The occurrence was reported to be located 1,000 feet west of the Hastings Road (Hwy 62?), however, prospector Bob Ross located the workings at the northeast end of lot 24, concession 5. The 30 foot pit is about 200 feet west of Hwy 62 and the open cut is about 1,000 feet west of Hwy 62 near the boundary lot line of lot 24 and lot 25.
Pre 1898: A 30-foot shaft was sunk. Approximately 300 tons of ore was mined. 1980: Bob Ross completed prospecting and sampling. 1981: R.J. Ross completed 150 feet of diamond drilling. 1987: Harwin Exploration and Development Inc. completed 8 diamond drill holes totaling 2,599 ft., bedrock mapping, soil sampling, stripping, trenching, and a ground geophysical survey (gradiometric, magnetometer).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Tweed file, Madoc #93 / 2.10400 | 31C12NE0038 | 31C12NE0038 |
| Tweed file, Madoc #39 | 31C12NE0051 | 31C12NE0051 |
| Tweed file Madoc #112 | 31C12NE0034 | 31C12NE0034 |
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Contains |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Siliceous And Sericitic | Near |
Nov 23, 2020 (Sheree Hinz) - The occurrence is located within siliceous and sericitic schists near the contact with a narrow band of amphibolite-altered mafic metavolcanics, which is flanked to the south by carbonate metasediments. The schists contain abundant disseminated to massive sulphides, predominantly pyrite and pyrrhotite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Ankerite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore |
Nov 23, 2020 (Sheree Hinz) - In 1897 approximately 300 tons of ore was mined from open-cuts. Quartz veins found in diamond drill holes contain pyrite, sphalerite, and visible gold. In 1987, samples of quartz vein and wall rock gave assays of 62 and 48 ppb Au, respectively. Two consecutive 3 ft wide chip samples across quartz veins and wall rock in the shaft, taken in 1981, returned assays of 0.005 and 0.015 oz Au/ton (OFR5808, p. 108).
Publication - Gold Occurrences of Ontario East of Lake Superior; Geological Survey of Canada, Memoir 192
Publication Number: GSC Mem 192 Page: 119 Date: 1936
Author: Kindle, E.D.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100824
Book - NMI #505261
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
MonoMap - Geology of Madoc Township and the north part of Huntingdon Township, Hastings County
Publication Number: R073 Page: 20 Date: 1968
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario
Publication Number: MDC018 Page: 44 Date: 1979
Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.
Publisher Name: Ontario Geological Survey
Location:
Mono - Metallogeny of the Grenville Province, southeastern Ontario
Publication Number: OFR5515 Page: 104 Date: 1984
Author: Carter T.R.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Base metal, molybdenum and precious metal deposits of the Madoc-Sharbot Lake area, southeastern Ontario
Publication Number: OFR5548 Page: 351H Date: 1985
Author: Malczak J., Carter T.R., Springer J.S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Exploration for gold in southeastern Ontario, 1980-1990
Publication Number: OFR5808 Page: 105-109 Date: 1991
Author: LeBaron P.S.
Publisher Name: Ontario Geological Survey
Location:
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