Ontario Geological Survey
Permanent Link to this Record:
MDI31G02SW00005
| Record Name(s) | Long Sault Dam - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1990-Nov-05 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gypsum
Township or Area: Cornwall
Latitude: 45° 0' 46.13" Longitude: -74° 47' 17.46"
UTM Zone: 18 Easting: 516690.648 Northing: 4984395.55 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31G02SW
Point Location Description: Point on S edge of Cornwall Canal.
Location Method: Conversion from MDI
Province: Paleozoic and Mesozoic Basins
Dec 07, 2005 (C Papertzian) - A 4-5 ft bed of laminated gypsum in Beekmantown dolomite ( Oxford Formation ) at 190 ft depth in the Cornwall-Lancaster area. Thin gypsum beds are interlayered with the dolomite for 5 ft above and below the main gypsum bed. The occurrence is continuous over a wide area, as shown by Ontario Hydro drilling ( 1954 ) in the Long Sault dam site area and in the vicinity of the Barnhart Island powerhouse. Westroc Industries Ltd also drilled, in 1969-72, and intersected gypsum grading up to 78 % purity.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Gypsum | Economic | Ore |
Mono - Gypsum in Ontario
Publication Number: IMR018 Scale: Date: 1997
Author: Guillet G.R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Paleozoic geology of the Ottawa-St. Lawrence Lowland, southern Ontario
Publication Number: OFR5770 Scale: Date: 1991
Author: Williams D.A.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office