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Timmins mine (Timmins West; McAuley-Brydge; Orpit; Piccadilly Porcupine; Holmer), Bristol Township, Timmins, Cochrane District, Ontario, Canadai
Regional Level Types
Timmins mine (Timmins West; McAuley-Brydge; Orpit; Piccadilly Porcupine; Holmer)Mine
Bristol TownshipTownship
TimminsCity
Cochrane DistrictDistrict
OntarioProvince
CanadaCountry

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Latitude & Longitude (WGS84):
48° 23' 0'' North , 81° 33' 18'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Timmins42,997 (2017)18.8km
Mindat Locality ID:
256171
Long-form identifier:
mindat:1:2:256171:7
GUID (UUID V4):
1f8cb220-6abf-42c3-9ede-120ed67841e2


History:
1911-37: McAuley and Bridge - discovery, two short shafts, trenching, diamond drilling.
1938-48: Orpit Gold Mines and Piccadilly Porcupine Gold Mines and Stanwell Oil and Gas Ltd.: mapping, 87 ddh (13,800 m).
1959: Holmer Gold Mines purchased the property.
1964: United Buffadison Mines Ltd. - optioned the property, trenching, 10 ddh (2116 m).
1968-82: Holmer Gold Mines- diamond drilling ( 45 ddh, 10512 m), stripping and pitting, ground geophysics.
1984-86: Noranda - optioned the property and carried out airborne and ground magnetic and electromagnetic surveys, 4 ddh (1465 m).
1987-90: Chevron Minerals Ltd. - optioned the property, airborne magnetic survey, mapping, induced polarization, magnetic surveying, 29 ddh-6115 m, stripping, sampling.
1996-98: Holmer Gold Mines Ltd. - ground geophysics, geochemistry, diamond drilling (89 ddh).
1999: St. Andrew Goldfields - 10 ddh-1341 m.
2002: Holmer Gold Mines Ltd. - 22 ddh (5220 m).
2003-2009 - Lake Shore Gold Corp. - updated mineral resource estimate, DD-271-112305 m, airborne geophysics, soil sampling, stripping, sampling, metallurgical testing, UG DD-300-24572m, infrastructure development.
2011: Lake Shore Gold Corp. - in production

Geology:

Mineralization is strongly controlled by the older structural features. The sheared basalts and arenites form the preferred host to the mineralization and the mineralized chutes are orientated parallel to the dominant early fold axis. The older shear zone is not easy to discern and in the past has been mistaken for metasediments. This shear strikes east - west and dips steeply to the north. The dominant fold axis is typically the only discernible fold to be seen in most outcrops and in this area, this axis plunges steeply to the west in the plane of the older shear zone. The late fault which has been called the Bristol fault, consists of an unconsolidated breccia zone with a narrow fault plane filled with unconsolidated gouge. The character of this fault is dissimilar to the Destor - Porcupine Fault.
Within the metavolcanics a clear progressive alteration sequence is apparent yet within the metasediments only the ultimate alteration phases are discernible. The alteration in the volcanics consists of:- 1) widespread calcite alteration, 2) a narrow subtle graphitic front, 3) appearance of sericite in increasing amounts, 4) replacement of calcite by dolomite, 5) tourmalinization, 6) albitization, and finally silicification. Gold mineralization is associated with the tourmalinization and is apparently downgraded by the albitization and silicification. Secondary remobilisation resulted in the formation of numerous quartz veins small and large in many orientations. There are also a number of tourmaline veins. Gold mineralization is enriched in both these veins and these veins contain all the known visible gold occurrences. Pyrite is the most common sulphide occurring in various forms but is typically disseminated in low concentrations throughout the alteration zones. Arsenopyrite is restricted to the tourmalinized zones and occurs in fine or course disseminated grains. Larger euhedral grains of these sulphides together with traces of chalcopyrite, galena, and sphalerite occur in the remobilised veins.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Arsenopyrite
Formula: FeAsS
Chalcopyrite
Formula: CuFeS2
Dolomite
Formula: CaMg(CO3)2
Galena
Formula: PbS
Gold
Formula: Au
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Sphalerite
Formula: ZnS
'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Arsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Unclassified
'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z

List of minerals for each chemical element

BBoron
B TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O AlbiteNa(AlSi3O8)
O DolomiteCaMg(CO3)2
O QuartzSiO2
O TourmalineAD3G6 (T6O18)(BO3)3X3Z
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg DolomiteCaMg(CO3)2
AlAluminium
Al AlbiteNa(AlSi3O8)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
CaCalcium
Ca DolomiteCaMg(CO3)2
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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