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Corporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada

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Latitude & Longitude (WGS84): 45° 30' 32'' North , 73° 36' 39'' West
Latitude & Longitude (decimal): 45.50889,-73.61111
GeoHash:G#: f25duuwh2
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate


This quarry, operated in the late 1800s and early 1900s by the City (Corporation) of Montreal, was on the north-northeast slope of Mont Royal, one of the Monteregian Hills. It is now buried under the Université de Montréal Sports Complex. It is the co-type-locality for caresite (Chao & Gault 1997). The associated minerals are given in the paper. The Corporation quarry is also a Dana locality for native arsenic; it was found in 1892 as a vein cutting nepheline syenite. Of historical interest is that one of the earliest publication of minerals from the quarry was by A. Lacroix in 1890 (THE Lacroix of "Mineralogie de France" etc.).

Clark (1952) called the quarry "a rich hunting ground for minerals." The quarry's unusual mineral diversity is due to the presence of gabbro and nepheline syenite, and dykes of various compositions, all of which contact and intrude Ordovician-age limestone. At the contacts, the limestone is metamorphosed to marble. Cavities in a nepheline syenite dyke yielded microcrystals of the caresite for which the quarry is a co-type-locality.


Mineral List


35 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 Macrostrat.org

Paleozoic
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 Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lacroix, A. (1890) Description des syénites néphélinique de Pouzac (Haut Pyrénées) et de Montréal (Canada) et de leurs phénomènes de contact. Bulletin Société Geologiques de France, Ser. 3, Vol. 18, 551-588.
Osann, A. (1892) Über ein Mineral der Nosean-Hauyn Gruppe von Montréal. Neues Jahrbuch Mineral. 222-224.
Evans, N.N. (1903) Native arsenic from Montreal. American Journal of Science, Series 4, Vol. 15, 92-93.
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.
Graham, R.P.D. (1918) Thaumasite from the Corporation quarry and saponite from Mont Royal tunnel. Trans. Roy. Soc. Can. Ser. 3, Vol. 12, 197-201.
Dolan, E.P. (1923) The contact metamorphic zone of Mount Royal, Montreal, P.Q. Transactions of the Royal Society of Canada, Ser. 3, Vol. 17, 127-151.
Clark, T.H. (1952) Montreal area Laval and Lachine map-areas. Quebec Department of Mines, Geological Report 46, 159 p.
Chao, G.Y. and Gault, R.A. (1997) Quintinite-2H, quintinite-3T, charmarite-2H, charmarite-3T and caresite-3T, a new group of carbonate minerals related to the hydrotalcite-manasseite group. Canadian Mineralogist, 35, 1541-1549.
Tarassoff, P. (2013) Dawsonite, a Montreal mineral. Mineralogical Record, 44(1), 57-76.

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