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MacDonald Mine, Monteagle Township, Hastings Co., Ontario, Canada

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Latitude & Longitude (WGS84): 45° 9' 57'' North , 77° 49' 10'' West
Latitude & Longitude (decimal): 45.16611,-77.81972
Other regions containing this locality:Bancroft area (Bancroft district), Ontario, Canada
Köppen climate type:Dfb : Warm-summer humid continental climate

A feldspar mine in a zoned granite pegmatite, located near Hybla.

Coordinates taken by GPS at mine.

Currently August 1st, 2012. The MacDonald Mine underground workings are being filled in so visiting the site at this time is FORBIDDEN, until further notice.

"This mine has been by far the largest operator in the entire Bancroft district, and was worked from 1919 till 1928, when work was suspended. It was opened up originally by the Pennsylvania Feldspar Company, which was taken over in 1920 by the Verona Mining Company, which in turn was taken over by the Genesee Feldspar Company of Rochester, in 1922. The last-named company has performed most of the work. The output, consisting of about 5,000 tons per year, has all been shipped to the Genesee Company's own mill at Rochester, N.Y.
The mine lies on the northeast slope of a hill and consists of a single main opening, started originally as an open-cut and worked by benching. A drift was later carried in on the dyke below the upper workings and the deposit worked by a series of irregular stopes with pillars left between them. The lastest work consisted of sinking near the mouth of the drift, but this operation encountered a large mass of calcite within the dyke mass, and caused the closing down of the mine.
The deposit is remarkable for the presence in it of a variety of rare-element minerals, some of them recorded here for the first time. Its content of such minerals makes this deposit one of the most remarkable pegmatites, mineralogically, yet discovered in Canada." (Thomson 1943)

Mindat Articles

The now closed MacDonald Mine, north of Bancroft by Michael Adamowicz

Mineral List

27 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Neoproterozoic - Mesoproterozoic
541 - 1600 Ma

ID: 605950
Grenville Supergroup and Flinton Group

Age: Proterozoic (541 - 1600 Ma)

Stratigraphic Name: Grenville Supergroup and Flinton Group

Comments: Grenville Province Central Metasedimentary Belt

Lithology: Conglomerate, wacke, quartz arenite, arkose, limestone, siltstone, chert, minor iron formation, minor metavolcanic rocks

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Thomson, J. E. (1943) Mineral Occurrences in the North Hastings Area, Ontario Department of Mines, Annual Report ARV52, Pt.3, p.26-27.
Hewitt, D.F. (1954) Geology of Monteagle and Carlow Townships, Ontario Department of Mines, Sixty-Third Annual Report, ARV63, Pt.6, P.39, 43-47.
Satterly, J. (1956) Radioactive Mineral Occurrences in the Bancroft Area, Ontario Department of Mines, Annual report ARV65, pt.6, p.138-140.
Hewitt, D.F. (1967) Pegmatite Minerals Resources of Ontario, Ontario Department of Mines, Industrial Minerl Report 21, P.17-18, 20.
Ferguson, S.A. (1971) Columbium (niobium) Deposits of Ontario, Ontario Department of Mines, Mineral Resources Circular 14, MDC14, P.48.
Gordon, J.B., Rybak U.C., and Robertson J. A. (1981) Uranium and Thorium Deposits of Southern Ontario, Ontario Geological Survey, Open File Report 5311, p.237-238.
Masson, S.L. and Gordon J.B. (1981) Radioactive Mineral Deposits of the Pembroke-Renfrew Area, Ontario Geological Survey, Mineral Deposit Circular, MDC 23, p.105-107, -120-121.
Storey, C.C. and Vos M.A. (1981) Industrial minerals of the Pembroke-Renfrew area, Ontario Geological Survey, Mineral Deposit Circular 22, pt.2, p.122-123.
Steacy, H.R., Rose, E. R., Moyd, L. & Hogarth, D.D. (1982): Some classic Mineral Localities of Southeastern Ontario. Mineralogical Record 13, 197-203.
Sabina, A.P. (1986), Rocks and Minerals for the Collector, Bancroft-Parry Sound Area and Southern Ontario. GSC Misc. Report 39
Goad, B.E. (1990) Granitic pegmatites of the Bancroft Area, Southeastern Ontario, Ontario Geological Survey, Open File Report 5717, p.93-94.
Tarassoff, P.(1998) Ellsworthite and the MacDonald mine, Hybla, Ontario, Canada. Matrix 6(4), 159-163, 166-169.

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