Scientific data near [64.88577,-147.97795]

Search area extends approximately 4.5 km east-west and 10.5 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Fairbanks North Star	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Fairbanks D-2	1:63,360 Alaska quadrangle
Fairbanks	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Tolovana River	hydrologic unit
190405	hydrologic accounting unit
Southwest Alaska	hydrologic subregion
Alaska	hydrologic region

Geology of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format

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Map symbol	Lithology	Unit name
Dmi	Metamorphic	Metamorphosed mafic igneous rocks
PzPxyqs	Metamorphic	Quartzite and pelitic schist
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided

Airborne geophysical surveys

Aerial surveys of magnetic anomaly and gamma ray emission; older surveys were analog record which have been digitized, newer surveys collected data in digital form.

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ID	Data type	Description
Alaska Regional	M-Dz	Alaska Regional 14484 line km with spacing 16.10 km over parts of AK
Big Delta-Fairbanks	M-Dz	Big Delta-Fairbanks 25749 line km with spacing 1.20 km over parts of AK
Big Delta-Fairbanks	M-Dz	Big Delta-Fairbanks 25749 line km with spacing 1.20 km over parts of AK
Fairbanks 1954	M-Dz	Fairbanks 1954 1713 line km with spacing 1.60 km over parts of AK
Fairbanks	M/R-D	Fairbanks 2035 line km with spacing 9.60 km over parts of AK
Fairbanks 1994	M/EM-D	Fairbanks 1994 4325 line km with spacing 0.40 km over parts of AK
Goldstream Valley	M/EM-D	Goldstream Valley 2029 line km with spacing 0.10 km over parts of AK

Estimates of undiscovered mineral resources

National Mineral Resource Assessment 1998: Estimates of the number of undiscovered mineral resources of gold, silver, copper, lead, and zinc within identified permissive tracts (geographic areas in which mineral deposits may form).

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Tract	Deposit Type	Mineralization age
AK-EC05	Au-Sb veins
AK-EC07	Low-sulfide Au-quartz veins
AK-EC08	Low-sulfide Au-quartz veins
AK-EC13	Porphyry Cu, BC-Ak type
AK-EC14	Plutonic porphyry Au
AK-EC18	Polymetallic vein
AK-EC15	Placer Au

The continental crust

Seventy-seven major components of the North American continent were delineated at a general scale (1:5,000,000); including the general composition, geological environment, and types of primary metals endowments that can be expected in each domain.

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Domain	Crust type	Region
Yukon-Tanana lower	Passive margin	Alaska

Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

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Lab ID	Sample medium	Description
CGL583	rock	igneous felsic
CGL593	rock
CGL594	rock
CGW854	mineral
CGW855	mineral
CGW856	mineral
CGW857	mineral
CGW858	mineral
CGW859	mineral
CGW860	mineral
CGW861	mineral
CGW862	mineral
CGW863	mineral
CGW864	mineral
CGW865	mineral
CGW866	mineral
CGW867	mineral
CGW868	mineral
CGW869	mineral
CGW870	mineral
CGW871	mineral
CGW980	mineral
CGW981	mineral
CGW982	mineral
CHA534	concentrate	panned C3 fraction
CHA535	concentrate	panned C3 fraction
CHA536	concentrate	panned C3 fraction
CHA561	concentrate	panned C3 fraction
CHA562	concentrate	panned C3 fraction
CHA563	concentrate	panned C3 fraction
CHA564	concentrate	panned C3 fraction
CHA565	concentrate	panned C3 fraction
CHA566	concentrate	panned C3 fraction
MIN100	concentrate	panned C3 fraction

Geochemistry of stream sediments in the US from the NURE-HSSR database

National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
7026675	1977-08-16	Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -100 mesh through stainless steel sieves.

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

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Sample ID	Rock type	Rock name
CGL583	igneous	felsic
CGL593	unspecified
CGL594	unspecified

Mineral Resource Data System

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.

Database Home

Site name	Development	Commodities
Grant Mine Easter Dome Project	Plant	AU AG
Elmes	Past Producer	AU
Sheep Creek	Past Producer	AU
Royal Flush	Past Producer	AU
Irishman	Producer	AU AG PB SB W
Fair Chance	Past Producer	AU SB PB ZN
St. Patrick, Ace Creeks	Past Producer	AU AG
Grant Mine	Producer	AU SB PB W
Happy Creek	Past Producer	AU AG
Grant	Past Producer	AU AG PB SB W
Mohawk	Past Producer	AU PB SB ZN
Happy Creek	Past Producer	AU
Saint (St.) Patrick Creek	Past Producer	AU
Fair Chance	Past Producer	AU
Mohawk Mine	Past Producer	AU SB PB ZN
Dorothy and Dorice	Prospect	SB AU
Macomb	Prospect	AU
Last Chance	Past Producer	AU SB
Ryan Mine	Past Producer	AU SB
Mohawk Mine	Past Producer	AU SB PB ZN AS
Elmes	Past Producer	AU
Happy Ridge	Prospect	AU
Macomb	Prospect	AU
St. Patrick Cr	Prospect	AU
Royal Flush	Past Producer	AU
Little Dome Creek	Prospect	AU
Tri-Con Mill	Past Producer	AU PB

Alaska Resource Data File

A comprehensive database of Alaskan mineral deposits compiled from the published literature and from unpublished reports and data from industry, the US Bureau of Land Management, and USGS.

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Site	Status	Commodities
Macomb	Inactive	Au?
Royal Flush; Adler	Inactive	Au
Happy Creek	Inactive	Au
Elmes; Ethel; Nickaloff	Inactive	Au
Irishman	Active	Au
Dorothy and Dorice; Cosgrove and...	Inactive	Sb
Last Chance	Inactive	Au
Mohawk; Bondholder; Bondholder E...	Inactive	Au
Saint (St.) Patrick Creek	Inactive	Au
Fair Chance; Frisco; McGlove; Mi...	Inactive	Au
Billy Sunday; Leah Fraction; Smi...	Inactive	Au

National Geochemical Database: Concentrate

Geochemistry of concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
CHA534	stream/river	St Patrick Mine;; stream
CHA536	stream/river	St Patrick Mine, + galena;; stream
CHV959	stream/river	Grant Mine Dump Lode; TriCon;; stream
CHV960	stream/river	Grant Mine qtz Lode;; stream

Global assessment of undiscovered copper resources

Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

Database Home

Tract name	Deposit type	Geology
Yukon-Tanana Upland	porphyry copper	Kluane Arc and Tertiary Kuskokwim Mountains volcanic-plutonic belt (continuation of Canadian Cordilleran continental arc); north of the Denali Fault
Chukotka	porphyry copper	Early to Late Cretaceous volcanic and intrusive rocks composing island-arc, continental-arc, and collisional magmatic belts associated with the Chukotka microcontinent.
Pacific Margin	porphyry copper	Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia.

Prospect- and mine-related features on USGS topographic maps

Symbols indicating mining-related features digitized from historical USGS topographic maps in the western part of the conterminous US. Includes prospect pits, mine shafts and adits, quarries, open-pit mines, tailings piles and ponds, gravel and borrow pit

Database Home

Feature ID	Feature type	Feature name
Mine Shaft	point
Mine Shaft	point
Open Pit Mine	point
Open Pit Mine	point
Prospect Pit	point
Open Pit Mine	point	Gold Mine
Open Pit Mine	point	Gold Mine
Adit	point	Mine
Open Pit Mine or Quarry	point
Open Pit Mine or Quarry	point
Open Pit Mine	polygon
Open Pit Mine	polygon
Tailings - Dredge	polygon
Tailings - Undifferentiated	polygon