|Latitude & Longitude (WGS84):||45° 30' 32'' North , 73° 36' 39'' West|
|Latitude & Longitude (decimal):||45.50889,-73.61111|
|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.
35 valid minerals. 1 (TL) - type locality of valid minerals.
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
252.17 - 541 Ma
|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.