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Tok, Fairbanks North Star Borough, Alaska, USA

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Latitude & Longitude (WGS84): 63° 20' 12'' North , 142° 59' 8'' West
Latitude & Longitude (decimal): 63.33667,-142.98556
GeoHash:G#: bg626614g
Köppen climate type:Dfc : Subarctic climate


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Quartz
Formula: SiO2
Reference: http://juneau.ak.blm.gov/POSTER/Poster1.html.
Quartz var: Amethyst
Formula: SiO2
Reference: http://juneau.ak.blm.gov/POSTER/Poster1.html.
Rhodonite
Formula: Mn2+SiO3
Reference: http://juneau.ak.blm.gov/POSTER/Poster1.html.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
Group 9 - Silicates
Rhodonite9.DK.05Mn2+SiO3

List of minerals arranged by Dana 8th Edition classification

Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=5
Rhodonite65.4.1.1Mn2+SiO3
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
var: Amethyst-SiO2

List of minerals for each chemical element

OOxygen
O Quartz (var: Amethyst)SiO2
O QuartzSiO2
O RhodoniteMn2+SiO3
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si QuartzSiO2
Si RhodoniteMn2+SiO3
MnManganese
Mn RhodoniteMn2+SiO3

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

Quaternary
0 - 2.588 Ma



ID: 1698812
Unconsolidated surficial deposits, undivided

Age: Pleistocene (0 - 2.588 Ma)

Description: Alluvial-fan deposits of the Delta Glaciation, primarily gravel

Lithology: Unconsolidated

Reference: Wilson, F.H., Hults, C.P., Mull, C.G, and Karl, S.M. (compilers). Geologic map of Alaska. doi: 10.3133/sim3340. U.S. Geological Survey Scientific Investigations Map 3340, pamphlet 196. [21]

Neogene
2.588 - 23.03 Ma



ID: 654001
Supracrustal; Sedimentary and/or volcanic: undivided

Age: Neogene (2.588 - 23.03 Ma)

Description: Interior western Alaska, Yukon-Koyukuk Basin

Comments: Sedimentary basin; Gordey & Makepeace, 2003; Wilson & Hults, unpublished compilation, 2007-08

Lithology: Sedimentary and/or volcanic rock: undivided

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

Paleozoic - Neoproterozoic
251.902 - 1000 Ma



ID: 3188010
Precambrian-Phanerozoic sedimentary rocks

Age: Neoproterozoic to Triassic (251.902 - 1000 Ma)

Lithology: Sedimentary rocks

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

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