Scientific data near [46.68200,-112.54684]

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

Geographic context

Counties, states, countries, continents, or oceans
Powell	county
Montana	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Ophir Creek	quadrangle 1:24,000 scale
Elliston	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
Upper Missoula Group: McNamara, Bonner, and Mount Shields Formations; locally includes lower Libby Formation in northwestern Montana	MT	Middle Proterozoic

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
Northwest Montana '65	M-Dz	Northwest Montana '65 6598 line km with spacing 3.20 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

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
NR07	Skarn Au	Mesozoic - Tertiary
NR04	Skarn Zn-Pb	Mesozoic - Tertiary
NR13	Polymetallic replacement	Mesozoic - Tertiary
NR36	Sediment-hosted Cu, reduced-facies	Proterozoic
NR39	Sedimentary exhalative Zn-Pb	Late Proterozoic
NR37	Sediment-hosted Cu, Revett	Proterozoic

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
Wallace	Intracratonic mobile belt	Northern Rocky Mountains

National geochemical survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

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Sample ID	Material	Source
D-558203	Sediment	Stream, Dry
D-558204	Sediment	Stream, Dry

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
5024079	1977-04-27	Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -100 mesh through stainless steel sieves.
5024080	1977-04-27	Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -100 mesh through stainless steel sieves.

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
Ophir Mine	Past Producer	CU AU
Fairview Mine	Past Producer	AG AU PB CU SB AS TE
Opsata Mine	Past Producer	AU AG
Denver Mine	Occurrence	AU AG CU SB
Reservoir and Ophir Patents	Occurrence	AU
Opsata Mine	Occurrence	AU AG
Fairview Mine	Past Producer	AU CU AG
Ophir	Unknown	AU CU
Denver Mine	Past Producer	AG 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.

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Sample ID	Sample source	Sample notes
D558203
D558204
EJH444	stream/river	SD; stream
EJH445	stream/river	SD; stream
EJH817	stream/river	SD; 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.

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Sample ID	Sample source	Sample notes
EJH488	stream/river	CD; 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
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
Mine Shaft	point
Quarry	point
Prospect Pit	point
Prospect Pit	point
Gravel Pit	point
Mine Shaft	point
Mine Shaft	point
Mine Shaft	point
Prospect Pit	point
Placer Mine	polygon
Placer Mine	polygon