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Jason deposit, Macmillan Pass, Watson Lake mining district, Yukon, Canadai
Regional Level Types
Jason depositDeposit
Macmillan PassPass
Watson Lake mining districtMining District
YukonTerritory
CanadaCountry

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Latitude & Longitude (WGS84):
63° 8' 54'' North , 130° 15' 52'' West
Latitude & Longitude (decimal):
63.14861,-130.26471
GeoHash:
G#: c55r5zb5k
GRN:
N43W44
Type:
Deposit
Kรถppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
203637
Long-form identifier:
mindat:1:2:203637:6
GUID (UUID V4):
0


Stratiform lead zinc deposits (3 - South, Main, End zones)

The Main zone consists of a single lens of stratiform sulphide, barite and chert up to 20 m thick, interbedded with carbonaceous mudstone and diamictite overlying siltstone at the base of the Tom Member of the Portrait Lake Formation. It has a strike length of approximately 700 m and a downdip extent of 500 m. Thickness varies from 3 to 18 m. Recalculated geological reserves for the Main zone are 4 546 371 tonnes grading 2.08% Pb, 9.75% Zn and 2.05 g/t Ag.
The South zone consists of at least two stacked stratiform sulphide-barite-chert lenses. The upper lens is 1 200 m long and up to 20 m thick and is interbedded with the same diamictite and mudstone as the Main zone. The lower lens is a 300 x 400 m wedge shaped body up to 40 m thick which lies 10 m below the upper lens, from which it is separated by siliceous shale and diamictite. The South zone lenses are cut off to the southwest against Road River Group rocks by a northwest-striking fault. Recalculated geological reserves for the South zone are 5 770 091 tonnes grading 5.37% Pb, 2.90% Zn and 71.92 g/t Ag.
The End zone consists of baritic massive sulphide. Recalculated geological reserves for the End zone are 549 408 tonnes grading 10.30% Pb, 2.78% Zn and 80.14 g/t Ag..
Local synsedimentary structures comprise hydrothermally altered rounded mudclasts and siderite vein fragments in an altered and sulphide-bearing matrix of clay, quartz, muscovite, siderite and disseminated pyrite, sphalerite, galena, chalcopyrite and pyrrhotite. Near vent sites, wallrocks are strongly silicified, and conglomerate units are cemented by pyrite, ankerite, quartz, galena and sphalerite. The conglomerate units are wedge shaped, thickening toward the hydrothermal vent and are inferred to represent debris derived from a submarine scarp associated with synsedimentary faulting.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


17 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

โ“˜ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
โ“˜ Baryte
Formula: BaSO4
โ“˜ Barytocalcite
Formula: BaCa(CO3)2
โ“˜ Benstonite
Formula: Ba6Ca6Mg(CO3)13
โ“˜ Celsian
Formula: Ba(Al2Si2O8)
โ“˜ Chalcopyrite
Formula: CuFeS2
โ“˜ Fluorite
Formula: CaF2
โ“˜ 'Freibergite Subgroup'
Formula: (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
โ“˜ Galena
Formula: PbS
โ“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
โ“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
โ“˜ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
โ“˜ Norsethite
Formula: BaMg(CO3)2
โ“˜ 'Petroleum'
โ“˜ 'Petroleum var. Bitumen'
โ“˜ Pyrite
Formula: FeS2
โ“˜ 'Pyrobitumen'
โ“˜ Pyrrhotite
Formula: Fe1-xS
โ“˜ Quartz
Formula: SiO2
โ“˜ Quartz var. Chalcedony
Formula: SiO2
โ“˜ Siderite
Formula: FeCO3
โ“˜ Sphalerite
Formula: ZnS
โ“˜ Witherite
Formula: BaCO3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
โ“˜Sphalerite2.CB.05aZnS
โ“˜Chalcopyrite2.CB.10aCuFeS2
โ“˜Pyrrhotite2.CC.10Fe1-xS
โ“˜Galena2.CD.10PbS
โ“˜Pyrite2.EB.05aFeS2
โ“˜'Freibergite Subgroup'2.GB.05(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
Group 3 - Halides
โ“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
โ“˜Quartz
var. Chalcedony		4.DA.05SiO2
โ“˜4.DA.05SiO2
Group 5 - Nitrates and Carbonates
โ“˜Siderite5.AB.05FeCO3
โ“˜Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
โ“˜Witherite5.AB.15BaCO3
โ“˜Norsethite5.AB.30BaMg(CO3)2
โ“˜Barytocalcite5.AB.45BaCa(CO3)2
โ“˜Benstonite5.AB.55Ba6Ca6Mg(CO3)13
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
โ“˜Baryte7.AD.35BaSO4
Group 9 - Silicates
โ“˜Muscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
โ“˜9.EC.15KAl2(AlSi3O10)(OH)2
โ“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
โ“˜Celsian9.FA.30Ba(Al2Si2O8)
Unclassified
โ“˜'Petroleum
var. Bitumen'		-
โ“˜''-
โ“˜'Pyrobitumen'-

List of minerals for each chemical element

HHydrogen
Hโ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hโ“˜ KaoliniteAl2(Si2O5)(OH)4
Hโ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cโ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Cโ“˜ BarytocalciteBaCa(CO3)2
Cโ“˜ BenstoniteBa6Ca6Mg(CO3)13
Cโ“˜ NorsethiteBaMg(CO3)2
Cโ“˜ SideriteFeCO3
Cโ“˜ WitheriteBaCO3
OOxygen
Oโ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Oโ“˜ BarytocalciteBaCa(CO3)2
Oโ“˜ BaryteBaSO4
Oโ“˜ BenstoniteBa6Ca6Mg(CO3)13
Oโ“˜ CelsianBa(Al2Si2O8)
Oโ“˜ Quartz var. ChalcedonySiO2
Oโ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oโ“˜ KaoliniteAl2(Si2O5)(OH)4
Oโ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oโ“˜ NorsethiteBaMg(CO3)2
Oโ“˜ QuartzSiO2
Oโ“˜ SideriteFeCO3
Oโ“˜ WitheriteBaCO3
FFluorine
Fโ“˜ FluoriteCaF2
MgMagnesium
Mgโ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgโ“˜ BenstoniteBa6Ca6Mg(CO3)13
Mgโ“˜ NorsethiteBaMg(CO3)2
AlAluminium
Alโ“˜ CelsianBa(Al2Si2O8)
Alโ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alโ“˜ KaoliniteAl2(Si2O5)(OH)4
Alโ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siโ“˜ CelsianBa(Al2Si2O8)
Siโ“˜ Quartz var. ChalcedonySiO2
Siโ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siโ“˜ KaoliniteAl2(Si2O5)(OH)4
Siโ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siโ“˜ QuartzSiO2
SSulfur
Sโ“˜ BaryteBaSO4
Sโ“˜ ChalcopyriteCuFeS2
Sโ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sโ“˜ GalenaPbS
Sโ“˜ PyriteFeS2
Sโ“˜ PyrrhotiteFe1-xS
Sโ“˜ SphaleriteZnS
KPotassium
Kโ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kโ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caโ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Caโ“˜ BarytocalciteBaCa(CO3)2
Caโ“˜ BenstoniteBa6Ca6Mg(CO3)13
Caโ“˜ FluoriteCaF2
FeIron
Feโ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Feโ“˜ ChalcopyriteCuFeS2
Feโ“˜ PyriteFeS2
Feโ“˜ PyrrhotiteFe1-xS
Feโ“˜ SideriteFeCO3
CuCopper
Cuโ“˜ ChalcopyriteCuFeS2
Cuโ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
ZnZinc
Znโ“˜ SphaleriteZnS
AgSilver
Agโ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
SbAntimony
Sbโ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
BaBarium
Baโ“˜ BarytocalciteBaCa(CO3)2
Baโ“˜ BaryteBaSO4
Baโ“˜ BenstoniteBa6Ca6Mg(CO3)13
Baโ“˜ CelsianBa(Al2Si2O8)
Baโ“˜ NorsethiteBaMg(CO3)2
Baโ“˜ WitheriteBaCO3
PbLead
Pbโ“˜ GalenaPbS

Other Databases

Canada Yukon Survey:13759

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Gardner, H. D., Hutcheon, Ian (1985) Geochemistry, mineralogy, and geology of the Jason Pb-Zn deposits, Macmillan Pass, Yukon, Canada. Economic Geology, 80 (5) 1257-1276 doi:10.2113/gsecongeo.80.5.1257
[1]data.geology.gov.yk.ca (2021) https://data.geology.gov.yk.ca/Occurrence/13759#InfoTab
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