Twentieth Century Mine

The Twentieth Century Mine is a gold mine located in Ada county, Idaho at an elevation of 3,760 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: Twentieth Century Mine  

State:  Idaho

County:  Ada

Elevation: 3,760 Feet (1,146 Meters)

Commodity: Gold

Lat, Long: 43.5783, -116.08640

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 Twentieth Century Mine

Twentieth Century Mine MRDS details

Site Name

Primary: Twentieth Century Mine


Commodity

Primary: Gold
Tertiary: Copper
Tertiary: Lead
Tertiary: Silver


Location

State: Idaho
County: Ada
District: Shaw Mtn. District


Land Status

Land ownership: State
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.


Holdings

Not available


Workings

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Payette Section
Physiographic Detail: Boise Ridge


Mineral Deposit Model

Not available


Orebody

Form: LINEAR


Structure

Not available


Alterations

Not available


Rocks

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Miocene

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene


Analytical Data

Analytical Data: AVERAGED $3 TO $4/TON AU IN 1907.


Materials

Not available


Comments

Comment (Development): 700 Acres In Property


References

Reference (Deposit): Bell, R. N., 1908, Ninth Annual Report Of The Mining Industry Of Idaho For The Year 1907, P. 16 - 23.

Reference (Deposit): Bell, R. N., 1906, Seventh Annual Report Of The Mining Industry Of Idaho For The Year 1905, P. 15 - 18.

Reference (Deposit): Bell, R. N., 1907, Eighth Annual Report Of The Mining Industry Of Idaho For The Year 1906, P. 17 - 20.


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: Where to Find Gold in Idaho.