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

Latitude: 45°24'38"N
Longitude: 79°45'38"W
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 rock is a biotite gneiss with traces of felspar and quartz here and there.

Some of the calcite marble found at this site is of magnesian type, Goudge (1938). Pure calcite marble is found here as well.

Some pure calcite marble found here is bright white and very sparkly.

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. (MDI Number: MDI31E05NW00026)

Mineral List

'Biotite'
Calcite
'Feldspar Group'
Quartz


4 entries listed. 2 valid minerals.

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References

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.

MDI Number: MDI31E05NW00026




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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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