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Helen Mine, Chabanel Township, Algoma District, Ontario, Canadai
Regional Level Types
Helen MineMine
Chabanel TownshipTownship
Algoma DistrictDistrict
Ontario- not defined -
CanadaCountry

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View of the Algoma iron mining area, ca. 1960.

Helen Mine, Chabanel Township, Algoma District, Ontario, Canada
View of the Algoma iron mining area, ca. 1960.

Helen Mine, Chabanel Township, Algoma District, Ontario, Canada
View of the Algoma iron mining area, ca. 1960.

Helen Mine, Chabanel Township, Algoma District, Ontario, Canada
Latitude & Longitude (WGS84): 48° 1' 32'' North , 84° 44' 24'' West
Latitude & Longitude (decimal): 48.02556,-84.74000
GeoHash:G#: f0e9pwy1n
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


The original mining operations (Old Helen Mine) were developed to mine the surficial secondary deposits of goethite with pockets of pyritic and quartz sands within the siderite and pyrite members. The Helen Mine was both an open pit and underground mine developed to mine the siderite ore body. Lying above the carbonate-facies is thinly bedded chert-wacke-magnetite iron formation. The mafic to intermediate metavolcanics of the hanging wall display well developed chloritoid porphyroblasts. The mafic metavolcanics are typically pillowed and are carbonate altered. The footwall consists of intermediate lapilli and crystal tuffs, and spherulitic flows. Coarse intermediate breccias are also commonly observed in the footwall.

History:
1897-99: A. Goetz, B. Boyer, J. Sayer - discovery, stripping, test pitting, driving adits. 1900: adit driven into mine hill, tramway for ore transport completed, open pit mining started, reported diamond drilling (3425 ft). 1901 - open pit mining to 168 feet, shaft No. 1 to 100 feet. 1902: No. 2 shaft sunk to 198 feet. 1903: No. 1 shaft to 168 feet; 3425 feet ddh. 1905- No. 1 shaft to 286 feet. 1906-09: No. 1 vertical shaft to 428 feet and 4 levels developed. 1910-15: No. 2 shaft deepened to 682 feet and 9 levels established, 4-compartment shaft sunk below level 4, inclined shaft completed to connect with 4th level; ddh of siderite ore. 1916-1917: ddh and trenching. 1918: 890 ft. adit completed to examine siderite zone, open pit mining ceases. 1937: new adit driven into Helen Iron Range. 1938: adit to 977 feet; surface trenching. 1939: open pit mining of siderite from Helen. 1943: No. 3 vertical shaft to 272 feet. 1946: Helen open pit abandoned. 1947: No. 3 shaft deepened to 921 feet, 3 deeper levels established, underground mining of Helen ored body begins. 1951: underground mining of Victoria Ore body, and discovery of Alexander ore body. 1960: mining of Helen ore body ceases.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

Chalcopyrite
Formula: CuFeS2
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Goethite
Formula: α-Fe3+O(OH)
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Pyrite
Formula: FeS2
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Pyrrhotite
Formula: Fe7S8
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Siderite
Formula: FeCO3
Reference: Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
CCarbon
C SideriteFeCO3
OOxygen
O SideriteFeCO3
O Goethiteα-Fe3+O(OH)
O MagnetiteFe2+Fe23+O4
SSulfur
S PyriteFeS2
S ChalcopyriteCuFeS2
S PyrrhotiteFe7S8
FeIron
Fe SideriteFeCO3
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe PyrrhotiteFe7S8
Fe MagnetiteFe2+Fe23+O4
CuCopper
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 Macrostrat.org

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 622949
Metasedimentary rocks

Age: Archean (2500 - 3200 Ma)

Comments: Superior Province

Lithology: Marble, chert, iron formation, minor metavolcanic rocks

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]

Neoarchean
2500 - 2800 Ma



ID: 3190105
Archean sedimentary and volcanic rocks

Age: Neoarchean (2500 - 2800 Ma)

Comments: Superior Province

Lithology: Intermediate volcanic 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. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.


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