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Peak Deposit, Southeast Fairbanks Census Area, Alaska, USAi
Regional Level Types
Peak DepositMine (Active)
Southeast Fairbanks Census AreaCensus Area
AlaskaState
USACountry

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PhotosMapsSearch
09964210017552544301386.jpg
Quartz

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
06590060017552544315495.jpg
Chrysocolla

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
09964210017552544301386.jpg
Quartz

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
06590060017552544315495.jpg
Chrysocolla

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
09964210017552544301386.jpg
Quartz

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
06590060017552544315495.jpg
Chrysocolla

Peak Deposit, Southeast Fairbanks Census Area, Alaska, USA
Latitude & Longitude (WGS84):
63° 11' 10'' North , 142° 53' 32'' West
Latitude & Longitude (decimal):
63.18626,-142.89241
GRN:
N43W48
Type:
Mine (Active) - last checked 2025
Deposit first discovered:
2009
Age:
72.1 ± 0.5 to 69.9 ± 0.5 Ma
Geologic Time:
Late/Upper Cretaceous
Dating method:
Ar/Ar
Reference for age:
Illig 2015
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Tok1,258 (2011)17.4km
Tetlin127 (2011)19.3km
Tanacross136 (2011)31.7km
Mindat Locality ID:
289558
Long-form identifier:
mindat:1:2:289558:4
GUID (UUID V4):
0
Other/historical names associated with this locality:
Manh Choh


The Peak Deposit skarn deposit is located approximately ~20 km SE of Tok, Alaska in the Tetlin Hills. The Tetlin exploration project is comprised of state mining claims adjoining lands leased from the Tetlin village (Illig 2015). Mining began in the summer of 2023 and is currently an active mine site.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


26 valid minerals.

Detailed Mineral List:

ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
References:
Win Ba CollectionIdentified by Win Ba: Visual Identification, XRF
ⓘ Breithauptite
Formula: NiSb
ⓘ Calcite
Formula: CaCO3
ⓘ Cassiterite
Formula: SnO2
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
References:
Win Ba CollectionIdentified by Win Ba: Visual Identification, XRF
ⓘ Ferro-actinolite
Formula: ◻Ca2Fe2+5(Si8O22)(OH)2
ⓘ Ferro-edenite
Formula: NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘ Ferro-hornblende
Formula: ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
ⓘ Galena
Formula: PbS
ⓘ Greenockite
Formula: CdS
ⓘ Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘ Hedleyite
Formula: Bi7Te3
ⓘ Jonassonite
Formula: AuBi5S4
ⓘ Joséite-A
Formula: Bi4TeS2
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
References:
Win Ba CollectionIdentified by Win Ba: Visual Identification, XRF
ⓘ Maldonite
Formula: Au2Bi
ⓘ Native Bismuth
Formula: Bi
ⓘ Native Gold
Formula: Au
ⓘ Pyrargyrite
Formula: Ag3SbS3
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Ullmannite
Formula: NiSbS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘNative Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
ⓘMaldonite2.AA.40Au2Bi
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGreenockite2.CB.45CdS
ⓘBreithauptite2.CC.05NiSb
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘHedleyite2.DC.05Bi7Te3
ⓘJoséite-A2.DC.05Bi4TeS2
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘUllmannite2.EB.25NiSbS
ⓘPyrargyrite2.GA.05Ag3SbS3
ⓘJonassonite2.LA.65AuBi5S4
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘFerro-actinolite9.DE.10◻Ca2Fe2+5(Si8O22)(OH)2
ⓘFerro-hornblende9.DE.10◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
ⓘFerro-edenite9.DE.15NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Unclassified
ⓘ'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Hⓘ Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Hⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Hⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ CassiteriteSnO2
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Oⓘ Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Oⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Oⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ QuartzSiO2
NaSodium
Naⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Naⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
AlAluminium
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Alⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Alⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
SiSilicon
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Siⓘ Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Siⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Siⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Siⓘ QuartzSiO2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ GreenockiteCdS
Sⓘ Joséite-ABi4TeS2
Sⓘ PyrargyriteAg3SbS3
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ UllmanniteNiSbS
Sⓘ JonassoniteAuBi5S4
CaCalcium
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ CalciteCaCO3
Caⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Caⓘ Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Caⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Caⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
FeIron
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Feⓘ Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Feⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Feⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
NiNickel
Niⓘ BreithauptiteNiSb
Niⓘ UllmanniteNiSbS
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuⓘ MalachiteCu2(CO3)(OH)2
AsArsenic
Asⓘ ArsenopyriteFeAsS
AgSilver
Agⓘ PyrargyriteAg3SbS3
CdCadmium
Cdⓘ GreenockiteCdS
SnTin
Snⓘ CassiteriteSnO2
SbAntimony
Sbⓘ BreithauptiteNiSb
Sbⓘ PyrargyriteAg3SbS3
Sbⓘ UllmanniteNiSbS
TeTellurium
Teⓘ HedleyiteBi7Te3
Teⓘ Joséite-ABi4TeS2
AuGold
Auⓘ Native GoldAu
Auⓘ MaldoniteAu2Bi
Auⓘ JonassoniteAuBi5S4
PbLead
Pbⓘ GalenaPbS
BiBismuth
Biⓘ Native BismuthBi
Biⓘ HedleyiteBi7Te3
Biⓘ Joséite-ABi4TeS2
Biⓘ MaldoniteAu2Bi
Biⓘ JonassoniteAuBi5S4

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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

Illig, Peter Edward. Geology and Origins of the Peak Gold-Copper-Silver Skarn Deposit, Tok, Alaska. M.S. thesis, University of Alaska Fairbanks, 2015.
Illig, P., & Newberry, R. J. (2015). Amphibole Au–Cu skarn and massive sulfide replacement at the Peak deposit, Eastern Interior, Alaska. In Proceedings, PACRIM 2015 Congress (Skarn and Replacement Deposits chapter): Melbourne, The Australasian Institute of Mining and Metallurgy (pp. 415-422).
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