Scientific data near [62.37278,-143.01000]

Search area extends approximately 4.5 km east-west and 9.6 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
Areas administered by US Federal agencies
Wrangell-Saint Elias National Preserve	National Preserve
National Preserve NPS	Type of land area
NPS	Federal land areas administered by NPS

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
Keg	Igneous - Plutonic	Granodiorite and other plutonic rocks
KJgn	Sedimentary	Gravina-Nuzotin unit
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Trcnk	Sedimentary	Chitistone and Nizina Limestones and Kamishak Formation
Trn	Igneous - Volcanic	Nikolai and Goon Dip Greenstones and equivalent rocks
Twv	Igneous - Volcanic	Wrangell Lava

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-SC31	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-SC29	Polymetallic vein
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
AGG057	rock	igneous diorite
AGG058	sediment
AGG153	rock	sedimentary carbonate
AGG154	rock	sedimentary carbonate
AGG155	rock	sedimentary carbonate
AGG156	rock	sedimentary carbonate
AGG157	rock	metamorphic phyllite-slate
AGG158	rock	igneous intermediate
AGG159	rock
C100193	sediment
C100197	sediment
C100200	sediment
D571149	rock
D571150	rock
D571151	rock
D571152	rock
D571153	rock
D571154	rock
D571155	rock
D571156	rock
D571157	rock
D571158	rock
D571159	rock
D571160	rock
D571161	rock	metamorphic skarn
D571162	rock	metamorphic skarn
D571163	rock
D571164	rock
D571165	rock	metamorphic skarn
D571166	rock
D571167	rock
D571168	rock
D571171	rock
D571179	sediment
D571180	sediment
D571181	sediment
D571182	sediment
D571183	sediment
D571184	sediment
D571185	sediment
D571188	sediment
D571204	sediment
D571205	sediment
D571206	sediment
D571207	sediment
D571208	sediment
D571209	sediment
D571210	sediment
D571213	sediment
D571309	concentrate	panned C3 fraction
D571310	concentrate	panned C3 fraction
D571311	concentrate	panned C3 fraction
D571313	concentrate	panned C3 fraction
F016831	sediment

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
7006004	1978-06-08	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.

Geochemistry of water samples in the US from the NURE-HSSR database

National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
3006454	1978-06-08	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

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
AGG057	igneous	diorite
AGG153	sedimentary	carbonate
AGG154	sedimentary	carbonate
AGG155	sedimentary	carbonate
AGG156	sedimentary	carbonate
AGG157	metamorphic	phyllite-slate
AGG158	igneous	intermediate
AGG159	unspecified
D571149	unspecified
D571150	unspecified
D571151	unspecified
D571152	unspecified
D571153	unspecified
D571154	unspecified
D571155	unspecified
D571156	unspecified
D571157	unspecified
D571158	unspecified
D571159	unspecified
D571160	unspecified
D571161	metamorphic	skarn
D571162	metamorphic	skarn
D571163	unspecified
D571164	unspecified
D571165	metamorphic	skarn
D571166	unspecified
D571167	unspecified
D571171	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
Rambler	Prospect	AU
Nabesna	Past Producer	AU AG CU PB FE ZN
Unnamed (southeast flank of White Mountain)	Prospect	AU AG PB CU FE
Nabesna	Past Producer	AU AG CU PB FE ZN
Nabesna Mine	Past Producer	AU CU PB AG ZN
Golden Eagle	Prospect	CU AU
Nabesna Mine	Past Producer	AU AG CU PB ZN SB FE AS

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
Nabesna	Inactive	Au
Rambler; Golden Eagle Group; Cli...	Inactive	Au

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.

Database Home

Sample ID	Sample source	Sample notes
AGG058	stream/river	stream
C100193	stream/river	stream deposit; same rivulet as 6NA029, about 150 m be; stream
C100197	stream/river	stream deposit; site duplicate of 6NA029; stream
C100200	stream/river	stream deposit; small drainage below Nabesna mill tail; stream
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
C104977	mine/mill tailings	vein, cavity or fracture filling containing gangue minerals; mill tailings; below Nabesna mill site; ""sandy"" zone w/ trace pyrite; mill product
C104978	mine/mill tailings	vein, cavity or fracture filling containing gangue minerals; mill 'tailings; below Nabesna mill site; brown and gray ""sand"" w/ >1; mill product
D571179	stream/river	stream
D571180	stream/river	unconsolidated stream sed;; stream
D571181	stream/river	unconsolidated stream sed;; stream
D571182	stream/river	unconsolidated stream sed;; stream
D571183	stream/river	unconsolidated stream sed;; stream
D571184	stream/river	stream
D571185	stream/river	unconsolidated stream sed;; stream
D571186	stream/river	unconsolidated stream sed;; stream
D571188	stream/river	unconsolidated stream sed;; stream
D571204	stream/river	stream
D571205	stream/river	stream
D571206	stream/river	stream
D571207	stream/river	stream
D571208	stream/river	stream
D571209	stream/river	stream
D571210	stream/river	stream
D571211	stream/river	stream
D571213	stream/river	stream
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
D571311	mine/mill tailings	nonmagnetic heavy-mineral concentra;; mine tailings
D571313	stream/river	nonmagnetic heavy-mineral concentra;; 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.

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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