Latest Out Mine

The Latest Out Mine is a lead and silver mine located in Lemhi county, Idaho at an elevation of 7,999 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

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Site Name

Primary: Latest Out Mine

Commodity

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

Location

State: Idaho
County: Lemhi
District: Texas 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: Ralph Nichols
Years: 1909 -

Owner Name: Latest Out Mining And Smelting Co.
Years: 1913 -

Production

Year: 1913
Time Period: 1910-1913
Material type: ORE
Description: Cp_Grade: ^25 - 45 % Pb, Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Year First Production: 1880
Discovery Year: 1880
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: Lemhi Mountains

Mineral Deposit Model

Not available

Orebody

Form: LENS, IRREGULAR

Structure

Type: R
Description: Folding

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene

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

Analytical Data

Analytical Data: FROM 200-500 FT ORE HAS 32% PB, 3% ZN, 12 OZ AG, 0.025 OZ AU/TON
Analytical Data: SULFIDES DECREASE WITH DEPTH: FROM SURFACE TO 200 FT DEPTH ORE HAS 35% PB, 7% ZN, 16 OZ AG, 0.025 OZ AU/TON

Materials

Ore: Galena
Ore: Sphalerite
Gangue: Limonite
Gangue: Hematite
Gangue: Iron

Comments

Comment (Location): In central part of Gilmore Division of Texas Mining District; Location from Gilmore 1:62500 Map

Comment (Production): $350,000 gross production up to end of 1911, $130,000 of which was in 1910

Comment (Development): 1 claim

Comment (Geology): Limestone and quartzite dip 25 Deg E

References

Reference (Deposit): Umpleby, J. B., 1913, Geology And Ore Deposits Of Lemhi County, Idaho: USGS Bulletin 528, P. 105.

Reference (Deposit): Nichols, R., 1913, Lead-Silver Mines Of Gilmore, Idaho: Am. Inst. Mining Engineers Trans., V. 46, P. 937-939.

Reference (Deposit): Bell, R. N., 1912, Thirteenth Annual Report Of The Mining Industry Of Idaho For The Year 1911.

Reference (Deposit): Bell, R. N., 1913, Fourteenth Annual Report Of The Mining Industry Of Idaho For The Year 1912.

Reference (Deposit): 1912 Compile State Mine Inspector's Report For 1911

Reference (Deposit): 1913 Compile State Mine Inspector's Report For 1912

Reference (Deposit): 1913 Recon Umpleby, J. B., Bull 528

Reference (Production): Item 8, Nichols, R., 1913, Am. Inst. Mining Engineers Trans., V. 46, P. 939; Items 1, 9, Umpleby, J. B., 1913, USGS Bulletin 528, P. 105; Item 2, Bell, R. N., 1912, Mining Industry Report For 1911; Item 3, Bell, R. N., 1913, Mining Industry Report For 1912

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.