IMPORTANT MESSAGE. We need your support now to keep running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada

This page is currently not sponsored. Click here to sponsor this page.
Geological section of Mont Royal showing CNR tunnel

Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
Geological section of Mont Royal showing CNR tunnel

Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
Geological section of Mont Royal showing CNR tunnel

Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
Latitude & Longitude (WGS84): 45° 30' 48'' North , 73° 37' 58'' West
Latitude & Longitude (decimal): 45.51333,-73.63278
Köppen climate type:Dfb : Warm-summer humid continental climate

The Canadian National Railway owns this 4.97 km tunnel straight through Mont Royal and the alkaline intrusion that formed it. Mont Royal is one of the Monteregian Hills that also includes Mont Saint-Hilaire.

Specimens recovered from the excavations were intensely studied at McGill in the 1922-30 period and some are on display at the Redpath Museum, McGill University campus.
The coordinates given are for the North portal of the tunnel, the south portal is under large buildings in downtown Montreal near Gare Central (Central Station of CNR).

Mineral List

51 valid minerals. 1 (TL) - type locality of 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

252.17 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Paleozoic (252.17 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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)
ADAMS, F.D. (1914) The Monteregian Hills. In: Guide Book No.3, Excursions in the Neighbourhood of Montreal and Ottawa, Canada Department of Mines, Geological Survey, Ottawa, 29-80.
AYLWARD, G.M. (1924) Dykes encountered in Mount Royal tunnel between stations 183 + 35 and 195 + 61. Unpublished McGill thesis.
BANCROFT, J.A. & HOWARD, W.V. (1923): The essexites of Mt. Royal, Montreal, P.Q. Transactions of the Royal Society of Canada 17, section 4, 13-43.
BILLINGS, M. (1928): The chemistry, optics and genesis of the hastingsite group of amphiboles. American Mineralogist 13, 287-296.
CARLYLE, A.W. (1923) A study of dyke rocks of Mount Royal tunnel between stations 200 and 383. Unpublished McGill thesis.
CHARTRAND, I. (1999) Modern investigation techniques shed a new light on the rocks of the Mount Royal tunnel. Unpublished McGill thesis.
CLARK, T.H. (1972) Montreal area. Geological Report 152, Ministère des Richesses Naturelle du Québec. 244p.
DOLAN, (1923) Transactions of the Royal Society of Canada, Ser. 3, Vol. 17, 127-151.
EVANS, (1903) American Journal of Science, Series 4, Vol. 15, 92-93.
FINLEY, F.L. (1930) The nepheline syenites and pegmatites of Mount Royal, Montreal, Quebec. Can. Journal of Research 2(4), 231-248.
GRAHAM, R.P.D. (1918) Transactions of the Royal Society of Canada, Ser. 3, Vol. 12, 197-201.
TARASSOFF, P. (2013) Dawsonite, a Montreal mineral. Mineralogical Record 44, 57-76.

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 19, 2018 03:08:14 Page generated: March 14, 2018 23:34:10
Go to top of page