Fort Knox Gold Mine, Fairbanks North Star Borough, Alaska, USAi
Regional Level Types | |
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Fort Knox Gold Mine | Mine |
Fairbanks North Star Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
64° 59' 57'' North , 147° 20' 10'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Fox | 417 (2011) | 14.0km |
Farmers Loop | 4,853 (2017) | 19.8km |
Two Rivers | 719 (2011) | 19.9km |
Badger | 19,482 (2011) | 24.0km |
Fairbanks | 32,325 (2017) | 25.4km |
Mindat Locality ID:
107448
Long-form identifier:
mindat:1:2:107448:5
GUID (UUID V4):
cd75aaad-3eba-485b-a00a-ab9c014a7de4
Located NE of Fairbanks on the north flank of Gilmore Dome, between Monte Cristo and Melba Creeks.
The Fort Knox gold deposit occurs in a granite body now commonly refered to as the Fort Knox Pluton. Gold occurs along margins of stockwork quartz veins and veinlets, on quartz-filled shear zones, and along fractures within the granite.
Discovered by a geologist walking behind a bulldozer on the Fort Knox claims, who picked up a piece of granite containing visible gold.
First gold bars were poured on Dec. 20, 1996. Total gold recovered as of Jan. 31, 2000 is 1,113,137 ounces. As of 2000, largest gold mine in Alaska, producing 1,000 ounces of gold from 36,000 to 44,000 tons of ore per day. Reserves are estimated at 186 million tons grading 0.027 ozs./ton, or 5.04 million ozs. The gold varies from 948 to 990 fine. Size of the open pit in 2000 was 3,000 feet by 5,000 feet.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
17 valid minerals.
Detailed Mineral List:
ⓘ Albite Formula: Na(AlSi3O8) |
ⓘ Arsenopyrite Formula: FeAsS |
ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 References: |
ⓘ Bismuth Formula: Bi |
ⓘ Bismuthinite Formula: Bi2S3 |
ⓘ Calcite Formula: CaCO3 References: |
ⓘ Cassiterite Formula: SnO2 References: |
ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 References: |
ⓘ Gold Formula: Au |
ⓘ 'K Feldspar' |
ⓘ Marcasite Formula: FeS2 |
ⓘ Microcline Formula: K(AlSi3O8) References: |
ⓘ Molybdenite Formula: MoS2 |
ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
ⓘ Orthoclase Formula: K(AlSi3O8) References: |
ⓘ Pyrite Formula: FeS2 |
ⓘ Pyrrhotite Formula: Fe1-xS |
ⓘ Quartz Formula: SiO2 |
ⓘ Quartz var. Chalcedony Formula: SiO2 References: |
ⓘ Scheelite Formula: Ca(WO4) |
ⓘ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O References: |
ⓘ Tetradymite Formula: Bi2Te2S References: |
ⓘ 'Wolframite Group' References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Gold | 1.AA.05 | Au |
ⓘ | Bismuth | 1.CA.05 | Bi |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
ⓘ | Bismuthinite | 2.DB.05 | Bi2S3 |
ⓘ | Tetradymite | 2.DC.05 | Bi2Te2S |
ⓘ | Molybdenite | 2.EA.30 | MoS2 |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Marcasite | 2.EB.10a | FeS2 |
ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
ⓘ | Cassiterite | 4.DB.05 | SnO2 |
ⓘ | 'Wolframite Group' | 4.DB.30 va | |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
Group 9 - Silicates | |||
ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
ⓘ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
Unclassified | |||
ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
ⓘ | 'K Feldspar' | - | |
ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
H | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
C | Carbon | |
C | ⓘ Calcite | CaCO3 |
O | Oxygen | |
O | ⓘ Albite | Na(AlSi3O8) |
O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Cassiterite | SnO2 |
O | ⓘ Quartz var. Chalcedony | SiO2 |
O | ⓘ Microcline | K(AlSi3O8) |
O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
O | ⓘ Orthoclase | K(AlSi3O8) |
O | ⓘ Quartz | SiO2 |
O | ⓘ Scheelite | Ca(WO4) |
O | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
O | ⓘ Garnet Group | X3Z2(SiO4)3 |
F | Fluorine | |
F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Na | Sodium | |
Na | ⓘ Albite | Na(AlSi3O8) |
Mg | Magnesium | |
Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | Aluminium | |
Al | ⓘ Albite | Na(AlSi3O8) |
Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | ⓘ Microcline | K(AlSi3O8) |
Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | ⓘ Orthoclase | K(AlSi3O8) |
Al | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
Si | Silicon | |
Si | ⓘ Albite | Na(AlSi3O8) |
Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Si | ⓘ Quartz var. Chalcedony | SiO2 |
Si | ⓘ Microcline | K(AlSi3O8) |
Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | ⓘ Orthoclase | K(AlSi3O8) |
Si | ⓘ Quartz | SiO2 |
Si | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
S | Sulfur | |
S | ⓘ Arsenopyrite | FeAsS |
S | ⓘ Bismuthinite | Bi2S3 |
S | ⓘ Marcasite | FeS2 |
S | ⓘ Molybdenite | MoS2 |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Pyrrhotite | Fe1-xS |
S | ⓘ Tetradymite | Bi2Te2S |
K | Potassium | |
K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
K | ⓘ Microcline | K(AlSi3O8) |
K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
K | ⓘ Orthoclase | K(AlSi3O8) |
Ca | Calcium | |
Ca | ⓘ Calcite | CaCO3 |
Ca | ⓘ Scheelite | Ca(WO4) |
Ti | Titanium | |
Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | Iron | |
Fe | ⓘ Arsenopyrite | FeAsS |
Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | ⓘ Marcasite | FeS2 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
As | Arsenic | |
As | ⓘ Arsenopyrite | FeAsS |
Mo | Molybdenum | |
Mo | ⓘ Molybdenite | MoS2 |
Sn | Tin | |
Sn | ⓘ Cassiterite | SnO2 |
Te | Tellurium | |
Te | ⓘ Tetradymite | Bi2Te2S |
W | Tungsten | |
W | ⓘ Scheelite | Ca(WO4) |
Au | Gold | |
Au | ⓘ Gold | Au |
Bi | Bismuth | |
Bi | ⓘ Bismuth | Bi |
Bi | ⓘ Bismuthinite | Bi2S3 |
Bi | ⓘ Tetradymite | Bi2Te2S |
Geochronology
Mineralization age: Late/Upper Cretaceous : 93.4 Ma to 91.5 MaImportant note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.
Geologic Time | Rocks, Minerals and Events | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Phanerozoic | ||||||||||
Mesozoic | ||||||||||
Cretaceous | ||||||||||
Late/Upper Cretaceous |
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Other Databases
Wikipedia: | https://en.wikipedia.org/wiki/Fort_Knox_Gold_Mine |
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Wikidata ID: | Q5471439 |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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Fort Knox Gold Mine, Fairbanks North Star Borough, Alaska, USA