Mason-Dixon Mine

The Mason-Dixon Mine is a silica and sand and gravel, construction mine located in Nez Perce county, Idaho at an elevation of 1,900 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

Name: Mason-Dixon Mine  

State:  Idaho

County:  Nez Perce

Elevation: 1,900 Feet (579 Meters)

Primary Mineral: Silica, Sand and Gravel, Construction

Lat, Long: 46.5286, -116.85190

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.

Satelite image of the Mason-Dixon Mine

Mason-Dixon Mine MRDS details

Site Name

Primary: Mason-Dixon Mine
Secondary: Sun Beam White Sand Company


Primary: Silica
Primary: Sand and Gravel, Construction


State: Idaho
County: Nez Perce
District: Cave Gulch District

Land Status

Land ownership: Private
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.


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Owner Name: S. Becker

Owner Name: Terteling, H. P.


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Record Type: Site
Operation Category: Producer
Deposit Type: Unconsolidated Sediments
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Walla Walla Plateau

Mineral Deposit Model

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Name: Sand and Gravel
Role: Host
Age Type: Host Rock
Age Young: Miocene

Name: Sand and Gravel
Role: Host
Age Type: Host Rock Unit
Age Young: Miocene

Analytical Data

Analytical Data: 0.187% FE2O3
Analytical Data: 18.32% AL2O3
Analytical Data: ANALYSIS ON - 10 MESH PORTION: 80.21% SIO2


Ore: Sand
Gangue: Quartzite
Gangue: Clay
Gangue: Mica
Gangue: Garnet


Comment (Location): Near Top Of Coyote Grade

Comment (Deposit): Body In Sections 20,21,28,29


Reference (Deposit): Staley, W. W., Jr., 1959, Beneficiation Of The Mason-Dixon Ore: Moscow, Idaho, Univ. Of Idaho, Ms Thesis, 26 P.

Reference (Deposit): Hubbard, C. R., 1956, Geology And Mineral Resources Of Nez Perce County: Idaho Bureau Of Mines And Geology Co. Rept. 1, 17 P.

Reference (Deposit): Dotson, J. C., 1955, Idaho Bureau Of Mines And Geology Open-File Rept., 7 P.

Idaho Gold

Where to Find Gold in Idaho

"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 at Where to Find Gold in Idaho.