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Seguin Falls occurrence, Christie Township, Parry Sound District, Ontario, Canada

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Latitude & Longitude (WGS84): 45° 24' 38'' North , 79° 45' 38'' West
Latitude & Longitude (decimal): 45.4105555556, -79.7605555556

Northeast of Orrville Ontario, the Seguin river passes under Highway 518. On the south side of the road a large pool empties over a small rapids the under the road and on the north side the water cascades steeply to a gorge like area. This gorge area is where the fast water has eroded the rock away as it is forced northwest by the rock. The north side of the road is very steep and dangerous.

White calcite marble is present on both sides of the road in small amounts.

The marble is highly tectonized and contains inclusions of garnet pyroxenite and pegmatite and a variety of disseminated silicate minerals. The section contains bands of dolomite and magnesian calcite as well as pure calcitic marble.

Mineral List

2 valid minerals.

The above list 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.


Ontario Geological Survey, Fifty-First Annual Report Of The
Ontario Department Of Mines, ARV51 Part.II, (Mineral Occurrences in Parry Sound District, J. Satterly, 1942) p. 66.

Ontario Geological Survey, Open File Report 5647, (Mineral Deposits Studies in the Huntsville-Parry Sound-Powassan Area ,C. Marmont and M. Johnston, 1987) p.51.

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