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Croesus Mine (Dobie-Leyson), Munro Township, Cochrane District, Ontario, Canada

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Latitude & Longitude (WGS84): 48° 33' 1'' North , 80° 14' 48'' West
Latitude & Longitude (decimal): 48.55028,-80.24667
GeoHash:G#: f0wujyq1v
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


Gold Mine off of Highway 101. This mine produced the richest ore ever mined in Ontario.

Samples of high-grade Croesus gold ore, possessed by the Ontario Department of mines, consisted of highly shattered grey quartz, cemented by irregular veinlets of Gold.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Satterly, J. (1951): Geology of Munro Township. Sixtieth Annual Report of the Ontario Department of Mines. 60, Part 8.
Chalcopyrite
Formula: CuFeS2
Reference: MDI Number: MDI42A09SE00012
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: MDI Number: MDI42A09SE00012
Gold
Formula: Au
Reference: Satterly, J. (1951): Geology of Munro Township. Sixtieth Annual Report of the Ontario Department of Mines. 60, Part 8.
Pyrite
Formula: FeS2
Reference: Satterly, J. (1951): Geology of Munro Township. Sixtieth Annual Report of the Ontario Department of Mines. 60, Part 8.
Pyrrhotite
Formula: Fe7S8
Reference: MDI Number: MDI42A09SE00012
Quartz
Formula: SiO2
Reference: Satterly, J. (1951): Geology of Munro Township. Sixtieth Annual Report of the Ontario Department of Mines. 60, Part 8.
Silver
Formula: Ag
Reference: MDI Number: MDI42A09SE00012
Sphalerite
Formula: ZnS
Reference: MDI Number: MDI42A09SE00012
Sylvanite
Formula: (Au,Ag)2Te4
Reference: MDI Number: MDI42A09SE00012
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: MDI Number: MDI42A09SE00012

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
'Silver'1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
'Sphalerite'2.CB.05aZnS
'Sylvanite'2.EA.05(Au,Ag)2Te4
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Sylvanite2.12.13.3(Au,Ag)2Te4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O Garnet GroupX3Z2(SiO4)3
O QuartzSiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si QuartzSiO2
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
AgSilver
Ag SilverAg
Ag Sylvanite(Au,Ag)2Te4
TeTellurium
Te Sylvanite(Au,Ag)2Te4
AuGold
Au GoldAu
Au Sylvanite(Au,Ag)2Te4

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: 615085
Mafic to intermediate metavolcanic rocks

Age: Archean (2500 - 3200 Ma)

Comments: Superior Province

Lithology: Basaltic and andesitic flows, tuffs and breccias, chert, iron formation, minor metasedimentary and intrusive rocks, related migmatites

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: 3187495
Archean sedimentary rocks

Age: Neoarchean (2500 - 2800 Ma)

Comments: Superior Province

Lithology: Metasedimentary schist

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)
- Satterly, J. (1951): Geology of Munro Township. Sixtieth Annual Report of the Ontario Department of Mines. 60, Part 8.
MDI Number: MDI42A09SE00012

External Links



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