Miller Mine (Keystone Mine; Grenville graphite deposit), Grenville-sur-la-Rouge, Argenteuil RCM, Laurentides, Québec, Canada
|Latitude & Longitude (WGS84):||45° 40' 34'' North , 74° 36' 32'' West|
|Latitude & Longitude (decimal):||45.67611,-74.60889|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
|Name(s) in local language(s):||, canton de Grenville|
The first graphite mine in Canada. Ells (1904) suggests the locality was known before 1845. Locality was probably known in 1837 or 1838. The locality is the co-type locality for lederite, one of the first minerals described that has parting.
Currently being developed by Canada Carbon http://www.canadacarbon.com/
9 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.
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
1000 - 1200 Ma
|Mesoproterozoic intrusive rocks|
Age: Stenian (1000 - 1200 Ma)
Lithology: Intrusive igneous 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.