Ontario Mineral Inventory

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Ontario Geological Survey
Permanent Link to this Record: MDI31F04SW00052

Record: MDI31F04SW00052

General

Mineral Record Identification
Record Name(s)	McMillan Quarry - 2000, Bancroft Marble - 1986, The Ontario Marble Quarries - 2000, Bancroft Marble Quarries - 2000
Related Record Type	Simple
Related Record(s)
Record Status	Past Producing Mine Without Reserves or Resources
Date Created	1986-Jun-02
Date Last Modified	2022-Jun-17
Created By
Revised By

Commodities

Primary Commodities: Marble (Building Stone)

Location

Township or Area: Dungannon

Latitude: 45° 2' 29.42" Longitude: -77° 48' 30.12"

UTM Zone: 18 Easting: 278817.519 Northing: 4991398.454 UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F04SW

Point Location Description: Dot symbol ' ST ' NE of Quarry Lake and closest to CNR lines.

Location Method: Conversion from MDI

Access Description: About 1.8 km W of York River, 1.4 km E on a quarry road. Just S of the concession road 1 ml E of Hwy 62 and adjacent to the CNR line - which crosses the road just E of the quarry (on a 30 ft hill). From the junction of Hwy 62 and 28 proceed S on 62 for 2 ml and turn left onto the Quarry road. Continue for 0.85 ml to a rough road on the right. The quarry is about 550 ft on this road, on the right.

Exploration History

1908-30 : quarrying by J. Hoidge, one of the ' Bancroft Marble Quarries '. The marble has been used in buildings throughout Canada, including the Parliament Buildings in Ottawa. Blocks quarried were of considerable size but there was much waste. 1938 : quarrying continued by the Rock Construction Co Ltd. 1976 : pace and compass survey by Steetley Industries Ltd - geological plan and report. 1985 : stripping by DiGirolamo with the aim of removing test blocks in the future. 1/3 - 1/4 of the early material removed is still on site and some sample blocks have been removed in the recent past (1985 ?). About 24,000 tons have been removed in total. The dumps cover an area of about 1/3 acre.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
2.2249	31F04SW9457	31F04SW9457

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic

Geology Comments

Dec 07, 2005 (C Papertzian) - Solid and coloured marbles from the McMillan (MacMillan), Stewart and Barker (Faraday township) quarries. The McMillan Quarry was opened across the full width of a band, 60ft wide, of medium-grained white dolomite with faint brownish and pinkish tinges. The quarry is 120 ft long x 60 ft wide and 40 ft deep. Coarser white dolomite is seen 300 ft to the E and pure white, coarse-grained dolomite is seen 200 ft N of the quarry along the railway siding (1938). There is little minor jointing, only 6m vertical joints. Horizontal partings are 3 -3.7 m apart. Colour in the Stewart and McMillan quarries include solid colours and shades of : green, pink, white, cream and blue. The quarry was sampled by the OGS in 1989 (MDC 28). Mafic dykes are reported in the marble - See also OFR 5585. The quarry is now water-filled. The marble band is not believed to be of sufficient extent to support further development.

Mineral Record Details

Site Visit Information

Date: Aug 30, 2002

Geologist: C Papertzian

Notes: The property was visited on July 23rd, 2002. The quarry was very overgrown and water filled. Poor outcrop exposure limits the determination of the true extent of the marble belt. . The dolomitic marble was white to light brown in colour and tends to be fine to medium grained. The quarry is slowly being surrounded with residences.

References

Publication - Limestones of Canada, their occurrence and characteristics, part IV, Ontario

Publication Number: CMB Pub 781 Page: 106, 109 Date: 1938

Author: Goudge, M F

Publisher Name: Canada Mines Branch

Location: https://doi.org/10.4095/75823

Part - Geology of Dungannon and Mayo townships

Publication Number: ARV64-08 Page: 54-55 Date: 1998

Author: Hewitt D.F., James W.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Building stones of Ontario, part 3, marble

Publication Number: IMR016 Page: 20-21 Date: 1998

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, marbles of the Pembroke-Renfrew area, southern Ontario

Publication Number: P1980 Scale: 1:126,720 Date: 1979

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