Comeback Mine

The Comeback Mine is a silver, zinc, and lead mine located in Boise county, Idaho at an elevation of 5,801 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: Comeback Mine

Commodity

Primary: Silver
Primary: Zinc
Primary: Lead
Secondary: Copper
Secondary: Gold

Location

State: Idaho
County: Boise
District: Grimes Pass 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.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Comeback Mining Co.

Production

Year: 1943
Material type: ORE
Description: Ap_Grade: ^.48 % Cu, 8.02 % Pb, 6.65 % Zn, 2.81 Oz/Ton Au, 95.39 Oz/Ton Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1928
Discovery Year: 1920
Discovery Method: Ore-Mineral Not In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Sawtooth Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Sericitized

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: 2.4% PB
Analytical Data: 217.7 OZ. AG/TON
Analytical Data: ASSAY OF HAND SAMPLE: 48.2 OZ AU/TON
Analytical Data: 1.09% CU

Materials

Ore: Galena
Ore: Sphalerite
Ore: Argentite
Ore: Tetrahedrite
Ore: Electrum
Ore: Chalcopyrite
Ore: Silver
Gangue: Quartz
Gangue: Pyrite

Comments

Comment (Workings): 4 TUNNELS

References

Reference (Deposit): ANDERSON, A. L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 119 - 319.

Reference (Deposit): CAMPBELL, A., 1945, FORTY - SIXTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1944.

Reference (Deposit): 5) BELL, R. N., 1935, THE GOLD RESOURCES OF IDAHO: MINING AND CONTRACTING REVIEW, V. 37, NO. 33, P. 6-7.

Reference (Deposit): 1934 GEOLMAP ROSS, C. P., BULL. 846 - D

Reference (Deposit): 1945 COMPILE 46TH ANN. IDAHO STATE INSPECTOR'S REPT., 1944

Reference (Deposit): 1947 GEOLMAP ANDERSON, A. L., BULL. 944-C.

Reference (Deposit): 1975 COMPILE USBM, MINING ACTIVITY LIST, 1974

Reference (Production): ITEM 1, CAMPBELL, A., 1945, 46TH ANNUAL REPORT; ITEM 8, BELL, R. N., 1935, MINING AND CONTRACTING REVIEW, V. 37, NO. 33

Reference (Deposit): ROSS, C. P., 1934, SOME LODE DEPOSITS IN THE NORTHWESTERN PART OF THE BOISE BASIN, IDAHO: USGS BULL 846-D, PP. 239-285.

Reference (Deposit): USBM, 1975, ACTIVITY OF IDAHO MINING PROPERTIES, 1974: USBM, BOISE, IDAHO, 61 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.