Afterthought Mine

The Afterthought Mine is a gold and silver mine located in Owyhee county, Idaho at an elevation of 7,280 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

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.

Site Name

Primary: Afterthought Mine

Commodity

Primary: Gold
Primary: Silver

Location

State: Idaho
County: Owyhee
District: French District

Land Status

Land ownership: BLM Administrative Area
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: Surface/Underground

Ownership

Owner Name: Lee Mines Inc. ( 1970 )

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1900
Discovery Method: Unknown
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: Silver City Range - Owyhee Range

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: L
Description: Brecciation, Fault, And Gouge

Alterations

Alteration Type: L
Alteration Text: Upper Levels Oxidized

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: ORE AVERAGES .14 OZ AU, 17.0 OZ AG TON ON 4TH LEVEL

Materials

Ore: Argentite
Gangue: Quartz

Comments

Comment (Deposit): WORK WAS BEGUN ON DEWATERING THE SHAFT IN 1964

Comment (Production): TOTAL PRODUCTION ABOUT $460,000.

Comment (Workings): 5 LEVELS

Comment (Deposit): VEIN PROBABLY S EXTENSION OF THE ORD FINO-GOLDEN CHARIOT VEIN

Comment (Location): LOCATED BETWEEN TWO FORKS OF S FK SINKER CR NEAR HEAD OF STREAM; AND IS .75 MI SE OF SUMMIT OF WAR EAGLE MTN.; PREVIOUS QUAD DESIGNATION = BOISE 1:250000

Comment (Development): 1 PATENTED, 6 UNPATENTED CLAIMS, MILL SITE

References

Reference (Deposit): 1900 DIREXPL DELAMAR COMP 1900

Reference (Deposit): 1920 E. J. ORFORD (1920 - 1930)

Reference (Deposit): 1950 GEOLMAP MORD ELLO L. LEE (1950) { 1968 GEOLMAP IDAHO BUREAU OF MINES & GEOL. PAMPHLET 138

Reference (Production): SALMAN, D.S.A., 1972, UNIV. OF IDAHO, M. S. THESIS, 65 P.

Reference (Deposit): ASHER, R. R., 1968, GEOLOGY AND MINERAL RESOURCES OF A PORTION OF THE SILVER CITY REGION, OWYHEE CO. ID.: ID. BUREAU OF MINES AND GEOLOGY PAMPH 138, 106 P.

Reference (Deposit): SALMAN, D.S.A., 1972, GEOLOGY OF TRIANGLE QUAD. AREA, OWYHEE COUNTY IDAHO: MOSCOW IDAHO, UNIV. OF IDAHO, M. S. THESIS, 65 P.

Reference (Deposit): WALKER, W., 1965, GEOLOGY OF A PART OF THE OWYHEE MOUNTAIN SOUTH OF SILVER CITY, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, MS THESIS, 69 P.

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.