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Zircon showing, Saranac properties (Saranac mine; Saranac Uranium Mines Ltd.), Monmouth Township, Haliburton Co., Ontario, Canada

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Latitude & Longitude (WGS84): 44° 58' 24'' North , 78° 14' 36'' West
Latitude & Longitude (decimal): 44.97361,-78.24361
Other regions containing this locality:Bancroft area (Bancroft district), Ontario, Canada

The Zircon showing exposes white granite, granite pegmatite, and crystalline limestone.
The following minerals occur at the Zircon showing: zircon, thorite, allanite, pyroxene, titanite, scapolite, tourmaline, calcite, hematite, chlorite, goethite, graphite, and serpentine occur in the pegmatite. The crystalline limestone which was intruded by the pegmatite contains vesuvianite, fluorite, pyroxene, plagioclase and k-feldspar, smoky quartz, pyrite, goethite, pyrrhotite, and molybdenite.

The showings were explored for radioactive minerals by several open cuts from 1954-1956. The work was conducted by Saranac Uranium Mines Limited. At the Zircon showing, granite and granite pegmatite are exposed by a 46-m long open-cut and by a trench 30 m to the south. A skarn in crystalline limestone is exposed by two trenches 90 m north of the open-cut.

The article by Nasdala gives detailed analyses of these complex zoned and altered zircons with chemistry and backscatter images.

Mindat Articles

Exploring the Saranac Mine, Ontario (Updated Edition) by Michael Adamowicz

Mineral List

16 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
Alkalic plutonic rocks

Age: Proterozoic (541 - 1600 Ma)

Comments: Grenville Province Central Metasedimentary Belt

Lithology: Nepheline syenite, alkalic syenite, fenite; associated mafic, ultramafic and carbonatitic 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.


Sabina, A.P. (1986) Rocks and Minerals for the Collector, Bancroft-Parry Sound Area and Southern Ontario. GSC Misc. Report 39.

Nasdala, N. et al. (2009) Retention of uranium in complexly altered zircon: An example from Bancroft, Ontario. Curtin University Library.

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