Scientific data near [46.00999,-112.61095]

Search area extends approximately 2.2 km east-west and 3.2 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Silver Bow	county
Montana	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Butte North	quadrangle 1:24,000 scale
Butte North	quadrangle 1:100,000 scale
Butte	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Upper Clark Fork	hydrologic unit
Pend Oreille	hydrologic accounting unit
Kootenai-Pend Oreille-Spokane	hydrologic subregion
Pacific Northwest	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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Unit	State	Lithology
Granitic rock	MT	Cretaceous
Sediment or sedimentary rock	MT	Tertiary

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
Butte '83	M-D	Butte '83 11844 line km with spacing 1.60 km over parts of MT
Boulder Batholith	M-Dz	Boulder Batholith 4972 line km with spacing 3.20 km over parts of MT
Butte	M/R-D	Butte 4406 line km with spacing 4.80 km over parts of MT
Dillon	M/R-D	Dillon 4359 line km with spacing 4.80 km over parts of MT-ID

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
NR10	Porphyry Cu (North America)	Cretaceous - Eocene
NR24	Epithermal vein, quartz-adularia	Tertiary
NR26	Epithermal vein, quartz-alunite	Tertiary
NR30	Hot-spring Au-Ag	Tertiary

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
Great Falls	Intracratonic mobile belt	Northern Rocky Mountains

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
5023293	1976-04-22	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
5023294	1976-04-22	Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -100 mesh through stainless steel sieves.
5023295	1976-04-22	Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -100 mesh through stainless steel sieves.
5039221	1976-10-09	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
1016508	1976-04-22	Stream water sample filtered through a 0.45 micron membrane filter and acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
1028762	1976-10-09	Untreated stream water sample.
1028763	1976-10-09	Stream water sample filtered through a 0.45 micron membrane filter.
1028764	1976-10-09	Stream water sample filtered through a 0.45 micron membrane filter and acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
1028765	1976-10-09	Stream water sample filtered through a 0.45 micron membrane filter.

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
Rocker Placer	Past Producer	AU
Little Acre Placer	Occurrence	AU
Fairview	Occurrence	MN
Little Darling	Occurrence	AG
Grey Eagle	Occurrence	MN
Silver Bow Creek	Unknown	AU

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
Northern Rocky Mountains	porphyry copper	Part of a continental margin arc that formed along the western margin of North America
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
Mine Shaft	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Mine Shaft	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point