Scientific data near [57.59353,-133.33411]

Search area extends approximately 2.2 km east-west and 4.2 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Map quadrangles, from USGS or Canadian NTS
Sumdum C-5	1:63,360 Alaska quadrangle
Sumdum	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Mainland	hydrologic unit
190102	hydrologic accounting unit
Arctic Slope	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
MzPzss	Metamorphic	Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
w		Water

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
Sumdum	M/R-D	Sumdum 426 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-SE05	Sierran Kuroko mass. sulf.
AK-SE05	Sierran Kuroko mass. sulf.
AK-SE03	Low-sulfide Au-quartz veins
AK-SE03	Low-sulfide Au-quartz veins

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
Taku	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
LBP587	rock
LBQ381	rock	metamorphic schist
LBQ382	rock	metamorphic schist
LBQ439	rock	metamorphic schist
LBQ440	rock	metamorphic schist
LBQ441	rock
LBQ591	rock
LBQ592	rock
LBQ593	rock
LBQ594	rock
LBQ595	rock
LBQ596	rock
LBQ597	rock
LBQ599	rock
LBQ600	rock
LBQ601	rock
LBQ602	rock
LBQ603	rock
LBQ604	rock
LBQ605	rock
LBQ606	rock
LBQ607	rock
LBQ608	rock
LBQ609	rock
LBQ612	rock
LBQ613	rock
LBQ614	sediment
LBQ637	sediment
LBQ695	sediment
LBQ801	concentrate	panned only concentrate
LBQ802	concentrate	panned only concentrate
LBQ803	concentrate	panned only concentrate
LBQ804	concentrate	panned only concentrate
LBQ805	concentrate	panned only concentrate
LBQ806	concentrate	panned only concentrate
LBQ807	concentrate	panned only concentrate
LBQ808	concentrate	panned only concentrate
LBQ809	concentrate	panned only concentrate
LBQ810	concentrate	panned only concentrate
LBQ811	concentrate	panned only concentrate
LBQ812	concentrate	panned only concentrate
LBQ813	concentrate	panned only concentrate
LBQ814	concentrate	panned only concentrate
LBQ815	concentrate	panned only concentrate
LBQ816	concentrate	panned only concentrate
LBQ849	rock
LBQ850	rock
LBQ851	rock
LBQ989	rock	metamorphic schist

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
LBP587	unspecified
LBQ381	metamorphic	schist
LBQ382	metamorphic	schist
LBQ439	metamorphic	schist
LBQ593	unspecified
LBQ594	unspecified
LBQ595	unspecified
LBQ596	unspecified
LBQ597	unspecified
LBQ599	unspecified
LBQ600	unspecified
LBQ601	unspecified
LBQ602	unspecified
LBQ603	unspecified
LBQ604	unspecified
LBQ605	unspecified
LBQ606	unspecified
LBQ607	unspecified
LBQ608	unspecified
LBQ609	unspecified
LBQ612	unspecified
LBQ613	unspecified
LBQ849	unspecified
LBQ850	unspecified
LBQ851	unspecified
LBQ989	metamorphic	schist

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
Spruce Creek Placer	Past Producer	AU
Gertrude Gold Prospect	Occurrence	AU AG

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.

Database Home

Site	Status	Commodities
Gertrude	Probably inactive	Au
First Basin	Probably 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
LBQ614		collected by USBM;
LBQ637	stream/river	stream
LBQ695	stream/river	stream

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
LBQ801	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ802	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ803	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ804	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ805	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ806	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ807	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ808	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ809	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ810	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ811	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ812	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ813	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ814	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ815	stream/river	1st place basin, Spruce Ck, collected by USBM;; stream
LBQ816	stream/river	1st place basin, Spruce Ck, collected by USBM;; 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
Late Continental Arc	porphyry copper	Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Oligocene-Pliocene)
Intermontane Island-Arc	porphyry copper	Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America
Intermontane Island-Arc Cu-Au	porphyry copper	Triassic and Jurassic alkalic igneous rocks of accreted island arcs that formed offshore of western North America
Insular Mixed Island- and Continental Arc	porphyry copper	Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes
Cordilleran Continental Arc	porphyry copper	Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Jurassic-Eocene)
Southeast Alaska Tertiary	porphyry copper	Tertiary subduction and postsubduction calc-alkalic plutons of southeast Alaska
Alaska Peninsula and Aleutian Islands	porphyry copper	Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
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.