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Ontario Geological Survey
Permanent Link to this Record:
MDI31E01SE00135
| Record Name(s) | Virginia Graphite Co. Mill Site - 1910, Tonkin-Dupont Property - 1914, South Wilberforce Graphite - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1991-Mar-25 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Graphite
Township or Area: Monmouth, Monmouth
Latitude: 45° 1' 40.37" Longitude: -78° 12' 33.87"
UTM Zone: 17 Easting: 719834.77 Northing: 4989836.54 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31E01SE
Point Location Description: adit
Location Method: AMIS Site Visit
Access Description: In the village of Wilberforce, turn onto Schofield Drive, proceed to dam. Park and walk across dam and follow trail to right along the river bank until the old mill foundations. Follow trail across the clearing turning left onto overgrown trail approx 15m of clearing. Proceed up hill to adit.
1910-14: Virginia Graphite Company – property acquisition, 2 pits established, DD in 1912, some graphite shipped,. 1914: Tonkin-DuPont Graphite Company is successor to Virginia Graphite Company;
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Bancroft
Geological Age: Mesoproterozoic Geochronological Age: 1400-1350 Ma Geochron. Age Ref.: P3526
| Rock Type | Rank | Composition | Texture | Relationship | Calcite Marble | 1 | Siliceous | Host |
|---|
Nov 06, 2013 (A Wilson) - The marble is described as medium- to coarse-grained, gneissic, siliceous calcitic marble. It contains 20-60% siliceous impurities and commonly contains thin intercalated units of amphibole-rich metasedimentary rocks. The bedding planes are marked by disseminated graphite flakes ranging from 1/10 to 1/8 of an inch in diameter. The graphite-bearing beds range from seams to beds up to 4 inches in thickness. The bedding strikes N35ºW and dips vertically.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Graphite | Economic | Ore |
Jan 26, 2017 (A Wilson) - Satterly estimated that hand-picked material would average 10% graphite. Only a small percentage of the limestone graded 10% and at the time the deposit was not considered to be of economic importance. Flake graphite is found in bands and seams in the marble. A few masses of solid amorphous graphite cut by stringers of flake graphite ranging from 1/20 to 1/5 of an inch in width were observed by Satterly in 1943. Some graphite was shipped from the property in 1911. The mill was constructed at this site. The equipment used at this site was shipped to their property near Maynooth.
| Rank | Classification |
|---|---|
| 1 | Industrial |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Part - Mineral occurrences in the Haliburton area
Publication Number: ARV52-02 Page: 42-43 Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of Glamorgan and Monmouth townships, Haliburton County
Publication Number: OFR5021 Page: 116-117 Date: 1997
Author: Armstrong H.S., Gittins J.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Page: 146 Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Major graphite occurrences within the Frontenac Axis, southeastern Ontario
Publication Number: OFR5729 Page: 74 Date: 1990
Author: MacKinnon A., LeBaron P.S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Graphite occurrences of the Frontenac Axis, eastern Ontario
Publication Number: MDC033 Page: 27 Date: 1992
Author: MacKinnon A., LeBaron P.S.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of Ontario
Publication Number: ARV20-01.003 Page: 44 Date: 1998
Author: Corkill E.T.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV21-01.003 Page: 41, 48, 162 Date: 1998
Author: Corkill E.T.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV22-01.003 Page: 49, 139 Date: 1998
Author: Corkill E.T.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV24-01.003 Page: 165 Date: 1998
Author: Sutherland T.F., Collins E.A., McMillan J.G., Bartlett J.
Publisher Name: Ontario Bureau of Mines
Location:
Mono - Graphite in Ontario
Publication Number: IMR020 Page: 22-23 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Wilberforce Area
Publication Number: P3526 Scale: 1:50,000 Date: 2003
Author: Lumbers S.B., Vertolli V.M.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office