Orser Mine (Marston; General Electric), Effingham Township, Lennox and Addington Co., Ontario, Canada
|Latitude & Longitude (WGS84):||44° 57' 30'' North , 77° 17' 26'' West|
|Latitude & Longitude (decimal):||44.95833,-77.29056|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Granite pegmatite dyke 15 feet wide and 1500 ft. long. The locality is unusual in that it contains yellow topaz and blue tourmaline.
4 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
|Neoproterozoic - Mesoproterozoic|
541 - 1600 Ma
|Early felsic plutonic rock|
Age: Proterozoic (541 - 1600 Ma)
Comments: Grenville Province Central Metasedimentary Belt
Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. 
1200 - 1400 Ma
|Mesoproterozoic intrusive rocks|
Age: Ectasian (1200 - 1400 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.