Ontario Geological Survey
Permanent Link to this Record:
MDI31C09NE00017
| Record Name(s) | Grindstone Island - 1893 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1990-Oct-18 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Soapstone
Secondary Commodities: Graphite
Township or Area: Burgess
Latitude: 44° 42' 44.2" Longitude: -76° 13' 50.89"
UTM Zone: 18 Easting: 402509.57 Northing: 4951725.79 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C09NE
Point Location Description: Property marked ' BS 1 ' at Grindstone Island.
Location Method: AMIS Site Visit
Access Description: Boat to Grindstone Island located on Big Rideau Lake. Site is located on northern peninsula of the island.
1883-1899: Sparham Roofing Company – material quarried for roofing. A small amount of stripping was completed on Grindstone Island in Rideau Lake. Several smaller occurrence soft graphitic crystalline limestone are exposed within the map area.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Frontenac
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Skarn | 1 | Is |
|---|
Sep 09, 2015 (A Wilson) - The material of the deposit is a soft, brown to grey-green, altered pyroxenite. The rock is, variously, medium to coarse-grained, and varies somewhat widely in the degree of alteration it has under-gone. In some parts of the quarry, fairly fresh, unaltered pyroxenite predominates. Pink calcite occurs locally in considerable amount. The rock has all the appearance of a typical mica-bearing pyroxenite that has undergone pronounced, local metamorphism by solutions from a later pegmatite intrusion, with complete or partial alteration of the pyroxene to rensselaerite or pyrallolite. No pegmatite was observed in the pit.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Talc | Economic | Ore | ||||
| 2 | Serpentine | Economic | Ore | ||||
| 3 | Calcite | Economic | Ore |
Sep 09, 2015 (A Wilson) - Between the years 1893 and 1899 a quantity of rock was quarried on this island and shipped by scow to Montreal, via the Rideau Canal, to be used in the manufacture of roofing. The operators were the Sparham Roofing Company, of Montreal. The workings consist of a single, almost circular, pit, opened in the east face of the low bluff fronting the lake. This pit measures 75 feet(23 m) across, and has been carried down to lake level, with a depth of about 25 feet.
| Rank | Classification |
|---|---|
| 1 | Industrial |
| Rank | Characteristic |
|---|---|
| 1 | Stratiform |
Book - Talc and soapstone in Canada
Publication Number: GSC Rep 583 Page: 33 Date: 1922
Author: Spence, H.S.
Publisher Name: Canada Mines Branch
Location: https://doi.org/10.4095/307779
Publication - Talc Deposits of Canada; Geological Survey of Canada, Economic Geology Series 2
Publication Number: GSC EGR 2 Page: 95 Date: 1926
Author: Wilson, M.E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102438
Publication - Westport map area, Ontario, with special emphasis on the Precambrian rocks; Geological Survey of Canada, Memoir 346
Publication Number: GSC Memoir 346 Page: 128 Date: 1967
Author: Wynne-Edwards, H.R.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100533
MonoMap - Geological notes for maps nos. 2053 and 2054, Madoc-Gananoque area
Publication Number: S012 Page: 27 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Talc in southeastern Ontario
Publication Number: OFR5714 Page: 181-183 Date: 1989
Author: LeBaron P.S., van Haaften S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Soapstone in Ontario
Publication Number: OFR5764 Page: 183-184 Date: 1991
Author: Gerow M.C., Sherlock E.J., Bellinger J.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Gananoque area, Ontario
Publication Number: M2054 Scale: 1:126,720 Date: 1998
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
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