Scientific data near [58.84250,-135.04584]

Search area extends approximately 2.2 km east-west and 4.3 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Juneau	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Juneau D-4	1:63,360 Alaska quadrangle
Juneau	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Lynn Canal	hydrologic unit
190103	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

Database Home

Map symbol	Lithology	Unit name
KJgn	Sedimentary	Gravina-Nuzotin unit
KJgn	Sedimentary	Gravina-Nuzotin unit
Kmgr	Igneous - Plutonic	Granitic rocks of central and southeast Alaska
MzPzss	Metamorphic	Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
MzPzsv	Metamorphic	Metavolcanic rocks west of the Coast plutonic complex of Brew and Morrell (1979b)

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.

Database Home

ID	Data type	Description
Juneau '82	M-D	Juneau '82 6598 line km with spacing 1.60 km over parts of AK
Juneau	M/R-D	Juneau 1319 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).

Database Home

Tract	Deposit Type	Mineralization age
AK-SE03	Low-sulfide Au-quartz veins
AK-SE05	Sierran Kuroko mass. sulf.

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.

Database Home

Domain	Crust type	Region
Taku	Passive margin	Alaska

Radiometric ages of rocks from Alaska

Radiometric ages of rocks or minerals sampled from Alaska. The data were collected from professional publications and/or received from researchers and used by permission.

Database Home

Record	Type	Comment
2

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.

Database Home

Lab ID	Sample medium	Description
CFL836	rock	igneous granodiorite
CFL837	rock	igneous felsic
CFL838	rock	igneous felsic
CGC399	rock	sedimentary conglomerate
CGC400	rock	sedimentary conglomerate
CGY935	rock	metamorphic unspecified
CHA990	rock	metamorphic unspecified
CHA991	rock
M167756	rock	igneous granodiorite
M172408	rock	igneous granodiorite
M172409	rock	igneous felsic
M172410	rock	igneous felsic
M196574	rock	igneous quartz diorite
M196575	rock	igneous quartz diorite
M196576	rock	igneous basalt
M196577	rock	igneous quartz monzonite
M196578	rock	igneous quartz syenite
M196579	rock	igneous quartz monzonite
M196580	rock	igneous aplite
M196581	rock	igneous quartz diorite
M196582	rock	igneous quartz monzonite
M196583	rock	igneous quartz monzonite
M196584	rock	metamorphic metabasalt
M196585	rock	igneous quartz monzonite

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.

Database Home

Sample ID	Date collected	Sample type
7020220	1979-09-28	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.

Database Home

Sample ID	Date collected	Sample type
3021845	1979-09-28	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"

Database Home

Sample ID	Rock type	Rock name
CFL836	igneous	felsic
CFL837	unspecified
CFL838	unspecified
CGC399	sedimentary	conglomerate
CGC400	sedimentary	conglomerate
CGY935	metamorphic	unspecified
CHA990	metamorphic	unspecified
CHA991	unspecified
M167756	igneous	granite
M172408	igneous	granodiorite
M172409	unspecified
M172410	unspecified
M196574	igneous	quartz diorite
M196575	igneous	quartz diorite
M196576	igneous	basalt
M196577	igneous	quartz monzonite
M196578	igneous	quartz syenite
M196579	igneous	quartz monzonite
M196580	igneous	aplite
M196581	igneous	quartz diorite
M196582	igneous	quartz monzonite
M196583	igneous	quartz monzonite
M196584	metamorphic	metabasalt
M196585	igneous	quartz monzonite

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
Jualin Mine Jualin Gold Property	Past Producer	AU AG
Fremming Prospect	Occurrence	AU CU PB ZN
Jualin Mine	Past Producer	AU CU PB ZN
Jualin Mine	Producer	AU AG CU PB ZN
Indiana Prospect	Occurrence	AU CU
Valentine	Prospect	AU CU
Indiana	Prospect	AU

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
Indiana	Active	Au
Jualin	Active	Ag;Au
Snowslide Gulch	Active	Au
Valentine; Falls and Diana; Thom...	Active	Ag;Au;Cu;Pb;Zn
Jualin (Coeur-Alaska)	Active	Ag;Au;Te

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.

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
Open Pit Mine	point	Jualin Mine