The Fourth of July Mine is a gold mine located in Custer county, Idaho at an elevation of 8,999 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 8,999 Feet (2,743 Meters)
Commodity: Gold
Lat, Long: 44.3722, -114.66780
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Fourth of July Mine MRDS details
Site Name
Primary: Fourth of July Mine
Secondary: 4th of July Mine
Secondary: Peak
Commodity
Primary: Gold
Secondary: Silver
Tertiary: Copper
Tertiary: Zinc
Location
State: Idaho
County: Custer
District: Yankee Fork District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Challis National Forest
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Year: 1942
Material type: ORE
Description: Ap_Grade: ^Ave. 0.9 Oz Au/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Salmon River Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification
Rocks
Name: Latite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Name: Latite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene
Name: Latite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Analytical Data
Analytical Data: ASSAY: 0.25 OZ AU/TON.
Materials
Ore: Gold
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Argentite
Gangue: Quartz
Gangue: Calcite
Gangue: Chalcedony
Gangue: Pyrite
Comments
Comment (Workings): 7 Adits
Comment (Location): SE Lucky Boy, On High Ridge Between Adair & Fourth of July Creeks
Comment (Deposit): 2 Veins
References
Reference (Deposit): Anderson, A. L., 1949, Silver - Gold Deposits Of The Yankee Fork District, Custer County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 83, 37 P
Reference (Production): Anderson, A. L., 1949, Idaho Bureau Of Mines And Geology Pamphlet 83, P. 25.
Reference (Deposit): U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 453, P. 213.
Idaho Gold
"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more: Where to Find Gold in Idaho.
