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Trethewey Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canadai
Regional Level Types
Trethewey MineMine
Coleman TownshipTownship
Cobalt areaArea
Cobalt-Gowganda regionRegion
Timiskaming DistrictDistrict
Ontario- not defined -
CanadaCountry

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Latitude & Longitude (WGS84): 47° 24' 0'' North , 79° 41' 7'' West
Latitude & Longitude (decimal): 47.40000,-79.68528
GeoHash:G#: f0rmdsyvn
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Temiskaming Shores10,442 (2010)10.7km
Saint-Bruno-de-Guigues2,928 (2016)20.4km
Ville-Marie2,831 (2016)20.4km
Englehart1,685 (2008)48.3km


A silver mine discovered in 1904 by W.G.Threthwey. It was operated by various companies (1906-1956) as an underground mine by 6 shafts, the deepest being 186ft. Total produced to the end of 1956 was 7,260,000 oz. Ag and 217,000lbs Co. It was later mined by Agnico with a large open pit that mined through the old workings.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Bismuth
Formula: Bi
Calcite
Formula: CaCO3
Cobaltite
Formula: CoAsS
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Nickeline
Formula: NiAs
Safflorite
Formula: (Co,Ni,Fe)As2
Silver
Formula: Ag
Skutterudite
Formula: CoAs3

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Cobaltite2.EB.25CoAsS
Nickeline2.CC.05NiAs
Safflorite2.EB.15a(Co,Ni,Fe)As2
Skutterudite2.EC.05CoAs3
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Silver1.1.1.2Ag
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Nickeline2.8.11.1NiAs
AmBnXp, with (m+n):p = 1:2
Cobaltite2.12.3.1CoAsS
Safflorite2.12.2.11(Co,Ni,Fe)As2
Skutterudite2.12.17.1CoAs3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S CobaltiteCoAsS
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CoCobalt
Co Safflorite(Co,Ni,Fe)As2
Co SkutteruditeCoAs3
Co CobaltiteCoAsS
NiNickel
Ni NickelineNiAs
AsArsenic
As Safflorite(Co,Ni,Fe)As2
As SkutteruditeCoAs3
As NickelineNiAs
As CobaltiteCoAsS
AgSilver
Ag SilverAg
BiBismuth
Bi BismuthBi

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

Paleoproterozoic
1600 - 2500 Ma



ID: 624198
Huronian Supergroup (2.2 Ga to 2450 Ma); Cobalt Group; Gowganda Formation

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Gowganda Formation

Comments: Southern and Superior Province

Lithology: Conglomerate, sandstone, silstone, argillite

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]

Siderian
2300 - 2500 Ma



ID: 3185030
Paleoproterozoic sedimentary rocks

Age: Siderian (2300 - 2500 Ma)

Stratigraphic Name: Cobalt Group

Comments: Southern Province

Lithology: Mudstone

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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ontario Dept. of Mines, 1968, MRC No.10, Silver Cobalt Calcite Vein Deposits of Ontario, by A.O.Sergiades

External Links



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