Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI31F02NW00006

Deposit: MDI31F02NW00006


Mineral Deposit Identification
Deposit Name(s) Black Donald Mine - 1896
Related Deposit Type None
Deposit Status past producing mine without reserves
Date Created 1986-Jan-31
Date Last Modified 2019-Aug-29
Created By Q Unknown
Revised By S Hinz


Primary Commodities: graphite


Township or Area: Brougham

Latitude: 45° 13' 28.8"    Longitude: 76° 54' 49.5"

UTM Zone: 18    Easting: 349758   Northing: 5009690    UTM Datum: NAD83

Resident Geologist District: Southeastern Ontario

NTS Grid: 31F02NW

Point Location Description: tailings

Location Method: amis site visit

Access Description: The Black Donald site is located on the south shore of Black Donald lake, southwest of the community of Calabogie. The former mine site was flooded naturally by the Madawaska river in 1950, and then permanently flooded for the construction of the head pond of the Mountain Chute generating station in 1967. Residences exist along the shoreline of Black Donald Lake.

Exploration and Mining History

1889: J. Moore discovered the property. 1896-1902: Ontario Graphite Company had the mine in production. 1904: R. McConnell sunk inclined and vertical shafts. 1908-38: Black Donald Graphite Company operated the mine. 1939-44: Black Donald Graphite Company produced graphite from tailings. 1942-43: Frobisher Limited carried out diamond drilling. 1943-54: Frobisher Limited had the mine in production. 1950: Underground mining abandoned, surface mining between 1950-52. 1952: open pit was dewatered and mining continued. 1954: Mining ceased.


Province: Grenville

Subprovince: Central Metasedimentary Belt

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
gneiss 1 quartz-feldspar host
marble 2 hanging wall
marble 3 siliceous footwall

Lithology Comments

04/20/2011 (A Wilson) - The ore body forms a conformable bed within the Grenville marble-quartzite-paragneiss sequence. These rocks are cut by aplite and pegmatite dikes. Crystalline limestone and its altered equivalents make up the largest part of the sediments. Bands of quartzite and amphibolite are interbedded with the limestone. The quartzites grade from light-grey to dark-grey with increase in biotite content. These lithologies characteristically contain an abundance of pyrite and pyrrhotite which gives the rock a rusty colour on the weathered surface.


Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 graphite economic ore
2 apatite economic ore
3 pyrite economic ore
4 pyrrhotite economic ore
5 tremolite economic ore
6 tourmaline economic ore

Mineralization Comments

08/29/2019 (S Hinz) - Flake, amorphous and crystalline graphite was produced from the mine. Most of the graphite was used for lubricant purposes. Other grades of the material were used for foundry facings, paints for iron and steel and stove polish. The ore zone at surface strikes northeasterly and dips vertically and can be traced over a strike length of about 240m. Average width of the zone is about 6 m, with a maximum width of 21 m at the northeastern end. Spence (1920) reported the average grade of the ore zone as 65% graphite, but, during the last decade of operations, the average grade was 25 to 30% graphite (Hewitt 1965). The best grade of flake graphite averaged over 98% carbon. At depth, it was discovered that the strata were folded into a small, subhorizontally oriented, S-shaped drag fold, plunging about 20% to the northeast and cut off to the west by a vertical fault. The most favourable zones within the orebody, with respect to thickness and grade, were along the limbs of the synclinal portion of the drag fold.

Mineral Deposit Details

Deposit Classification
Rank Classification            
1 replacement
Deposit Characteristics
Rank Characteristic            
1 vein
Production Data
Year Tonnes Commodities Commodity Production Reference Comment
1896 77244 Graphite In Ontario. Hewitt, 1965 Production from 1896 to 1954, entire mine life.


Book - Molybdenum, p. 147

Publication Number: R592    Date: 1925

Author: V.L. Eardley-Willmot

Publisher Name: GSC

Book - SUM RPT, P20-30E

Date: 1919

Publisher Name: GSC

Book - Mineral occurrences in Renfrew County and vicinity, P22-25

Publication Number: Mem195    Date: 1936

Author: B. C. Freeman

Publisher Name: GSC

Book - NMI FILE, 31F/02 GRP 1

Publication Number: N/A    Date: 1996

Book - Mineral occurrences in the Renfrew area, p. 43-46

Publication Number: AR53 pt 3    Date: 1944

Author: J. Satterly

Publisher Name: ODM

Book - Graphite in Ontario p. 45-56

Publication Number: IMR020    Date: 1965

Author: D.F. Hewitt

Publisher Name: ODM

Book - Industrial Minerals of the Pembroke-Renfrew Area p. 55-58

Publication Number: IMRC022    Date: 1981

Author: C.C. Storey and M. A. Vos

Publisher Name: OGS

Map - Renfrew area, eastern part

Publication Number: P1838    Scale: 1:63 360    Date: 1979

Author: V.M. Vertolli, S.B. Lumbers

Publisher Name: OGS

Book - Mines of Ontario in 1923, p. 91-92

Publication Number: AR33 pt 7    Date: 1924

Author: T. F. Sutherland et al.

Publisher Name: ODM

Map - Renfrew area

Publication Number: M53b    Scale: 1:126 720    Date: 1944

Publisher Name: ODM

Map - Precambrian Geology - Clyde Forks area

Publication Number: P3438    Scale: 1:50 000    Date: 2001

Author: R.M. Easton

Publisher Name: OGS

Book - Graphite, p35-38

Publication Number: No 511    Date: 1920

Author: H.E. Spence

Publisher Name: Geological Survey of Canada

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For detailed information regarding this mineral deposit please contact the Southern Ontario Resident Geologist District Office