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Glagoma Mine, Gladstone Township, Algoma District, Ontario, Canadai
Regional Level Types
Glagoma MineMine
Gladstone TownshipTownship
Algoma DistrictDistrict
Ontario- not defined -

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Latitude & Longitude (WGS84): 46° 17' 24'' North , 83° 12' 17'' West
Latitude & Longitude (decimal): 46.29000,-83.20472
GeoHash:G#: f0hz6du4v
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
Thessalon1,464 (2008)28.2km

1916-17: Two shafts sunk by Sudbury Copper Co. Ltd. Main shaft is 250 feet deep, levels at 150 and 250 feet, with a minor amount of drifting.
In 1917 the produced 1785 lbs. of Cu from 28.8 tons of ore.
1951: 723 feet of d.d. in 6 holes by Glagoma Copper Mines Ltd.
1956: 2068 feet of d.d. in 6 holes by International Cobalt and Silver Mining Co. Ltd.
1962: Adit, crosscutting, stoping by R.F. Fry and Associates Ltd. Produced 22.2 tons with average grade of 1.40% Cu; and 138.1 tons with average grade of 0.96% Cu.

The country rock is diabase with granite intrusions. The ore disposition is chalcopyrite in a quartz carbonate vein which has been traced at intervals along a strike length of 1 200 feet, with the vein open at both ends. The vein strikes N 80 E and dips 85 degrees to the north. Exposed widths are from two to seven feet. At the western end a continuous surface showing for a length of 150 feet averages 3.5% copper across a width of four feet. This ore shoot is further exposed along the ends of a shallow shaft to a depth of twelve feet. The shaft is now inaccessible for sampling but a considerable amount of chalcopyrite can be seen in the vein across widths of about six feet. A sample taken across the vein, from the end of the shaft a few feet below the surface assayed 5.3% copper across a width of five feet. On the top of the hill, about six hundred feet east of the west ore shoot, there is an old timbered shaft now caved and inaccessible. From the size of the dump it is estimated to have a depth of around 250 feet. There is no authentic information as to what was found in the underground workings but some fair grade copper ore can be seen on the dump. Three hundred feet to the east of this shaft the vein is exposed for 100 feet, carrying chalcopyrite, but too deeply oxidized to permit proper sampling.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

4 valid minerals.

Detailed Mineral List:

Formula: CuFeS2
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49. p.44
Formula: Fe2O3
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49. p.44
Formula: FeS2
Reference: MDI Number: MDI41J06SE00003
Formula: SiO2
Reference: MDI Number: MDI41J06SE00003

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 4 - Oxides and Hydroxides

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
AmBnXp, with (m+n):p = 1:2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si

List of minerals for each chemical element

O HematiteFe2O3
O QuartzSiO2
Si QuartzSiO2
S ChalcopyriteCuFeS2
S PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe HematiteFe2O3
Fe PyriteFeS2
Cu ChalcopyriteCuFeS2

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

1600 - 2500 Ma

ID: 612933
Mafic and related intrusive rocks and mafic dikes

Age: Proterozoic (1600 - 2500 Ma)

Comments: Southern and Superior Province

Lithology: Nipissing mafic sills (2219 ma): mafic sills, mafic dikes and related granophyre

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

2300 - 2500 Ma

ID: 3184863
Paleoproterozoic sedimentary rocks

Age: Siderian (2300 - 2500 Ma)

Stratigraphic Name: Cobalt Group

Comments: Southern Province

Lithology: Siltstone,tillite

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, used under Creative Commons Attribution 4.0 License


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Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49. p.44
MDI Number: MDI41J06SE00003

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