Scientific data near [62.37278,-143.01000]

Search area extends approximately 0.6 km east-west and 1.2 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Valdez-Cordova	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Nabesna B-5	1:63,360 Alaska quadrangle
Nabesna	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Nabesna-Chisana Rivers	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
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Trcnk	Sedimentary	Chitistone and Nizina Limestones and Kamishak Formation

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
East Alaska Range - Nabesna	M-Dz	East Alaska Range - Nabesna 43452 line km with spacing 1.20 km over parts of AK
Nabesna	M/R-D	Nabesna 2204 line km with spacing 9.60 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-SC05	Cu-Ag quartz veins
AK-SC16	Kuroko massive sulfide
AK-SC23	Porphyry Cu, BC-Ak type
AK-SC33	Cu (Au) skarn
AK-SC21	Porphyry Cu, BC-Ak type
AK-SC28	Polymetallic vein
AK-SC32	Cu (Au) skarn
AK-SC01	Basaltic Cu/Kennecott Cu
AK-SC18	Synorogenic-synvolcanic Ni-Cu
AK-SC09	Low-sulfide Au-quartz veins
AK-SC22	Porphyry Cu, BC-Ak type

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
Wrangellia	Oceanic arc	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
D571149	rock
D571150	rock
D571151	rock
D571152	rock
D571153	rock
D571154	rock
D571163	rock
D571309	concentrate	panned C3 fraction
F016831	sediment

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
D571149	unspecified
D571150	unspecified
D571151	unspecified
D571152	unspecified
D571153	unspecified
D571154	unspecified
D571155	unspecified
D571156	unspecified
D571157	unspecified
D571163	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.

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Site name	Development	Commodities
Nabesna Mine	Past Producer	AU AG CU PB ZN SB FE AS

National Geochemical Database: Sediment

Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

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Sample ID	Sample source	Sample notes
C100482	mine/mill tailings	Nabesna mill tailings core sample, carbonate-rich ""island""; also submitted in contract job GA30; mill product
C100483	mine/mill tailings	Nabesna mill tailings core sample, bright orange tailings; also submitted in contract job GA30; mill product
C100485	mine/mill tailings	Nabesna mill tailings core sample, bright orange tailings; also submitted in contract job GA30; mill product
C100486	mine/mill tailings	Nabesna mill tailings core sample, gray pyrite tailings; also submitted in contract job GA30; mill product
C104975	mine/mill tailings	vein, cavity or fracture filling containing gangue minerals; mill tailings; below Nabesna mill site; orange-tan garnet ""sand""; mill product
C104976	mine/mill tailings	vein, cavity or fracture filling containing gangue minerals; mill 'tailings; below Nabesna mill site; medium brown garnet (?) ""sa; mill product
F016831	unknown	sediment from standing pool of snowmelt on Nabesna mill tailings

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.

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Sample ID	Sample source	Sample notes
D571309	mine/mill tailings	nonmagnetic heavy-mineral concentra;; mine tailings
D571310	mine/mill tailings	nonmagnetic heavy-mineral concentra;; mine tailings

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.

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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
Western Alaska Range	porphyry copper	Cretaceous porphyry prospects along the Kahiltna Basin-Peninsula terrane boundary
Eastern Alaska Range and Wrangell Mountains	porphyry copper	Cretaceous (115-105Ma) deposits and prospects along the Nutzotin Basin-Wrangellia terrane boundary; south of the Denali Fault
Skolai Arc - Eastern Alaska	porphyry copper	Late Paleozoic Skolai Arc of the Wrangellia terrane; south of the Denali Fault
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

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Feature ID	Feature type	Feature name
Open Pit Mine	point