|Latitude & Longitude (WGS84):||44° 29' 12'' North , 77° 28' 49'' West|
|Latitude & Longitude (decimal):||44.48667,-77.48028|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Veins in dolomitic marble.
"The deposit was discovered in 1909 by Donald Henderson and Chesley Pitt of Madoc. Between 1910 and 1914 it was mined from an open pit. In 1914 a shaft was sunk but the mine remained inactive until 1943 when Reliance Fluorspar Mining Syndicate Limited took over operations until 1951. This was the mine's most productive period and four shafts (37.5, 26.5, 36.5, and 73 m deep) were sunk. Some 39,000 tonnes of ore were produced during this period making this the leading fluorite producer in the Madoc area. Some of the old buildings remain on the site. There are large dumps near the shafts."
This mine is the source of the wonderful "Madoc" fluorites. Specimens are typically pale sea green optical quality fluorite crystals of cubic habit with minor octahedral faces. Many were recovered on a white to tan fine-grained barite matrix. The Town of Madoc is nearby in Madoc Township. Many specimens were recovered during surface excavations in the early to mid-1970s. All mines in the area have since been recovered and are now inaccessible.
16 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
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. 
|Neoproterozoic - Mesoproterozoic|
541 - 1600 Ma
|Grenville Supergroup and Flinton Group|
Age: Proterozoic (541 - 1600 Ma)
Stratigraphic Name: Flinton Group
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.