Decker-Hortenstine Prospect

The Decker-Hortenstine Prospect is a molybdenum mine located in Elmore county, Idaho at an elevation of 7,001 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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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: Decker-Hortenstine Prospect
Secondary: Deckard's Mine
Secondary: Moly Claim Group

Commodity

Primary: Molybdenum
Secondary: Gold
Secondary: Silver
Tertiary: Copper
Tertiary: Zinc
Tertiary: Beryllium

Location

State: Idaho
County: Elmore
District: Roaring River District

Land Status

Land ownership: National Forest
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.
Administrative Organization: Boise National Forest

Holdings

Type: Located Claim

Workings

Not available

Ownership

Owner Name: William Decker, Roy Hortenstine

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Underground
Discovery Year: 1920
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: TABULAR, BANDS

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

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

Analytical Data

Analytical Data: GRAB SAMPLE CONTAINED 5.9% BE
Analytical Data: IN THE WEST LODE, ASSAYS WERE $20 AU/TON AND 8 OZ. AG/TON

Materials

Ore: Molybdenite
Ore: Marmatite
Ore: Silver
Ore: Gold
Gangue: Quartz
Gangue: Pyrite
Gangue: Feldspar

Comments

Comment (Location): 2 Mi. Upstream From The Rinebold Prospect On The Roaring River

Comment (Development): 2 Claims

Comment (Deposit): Deposits Occur Mainly In Two Mineralized Bands Or Lodes, About 500 Ft Apart

Comment (Workings): Shallow Cuts And Pits, One Short Prospect Tunnel

References

Reference (Deposit): Schrader, F. C., 1925, Molybdenite In The Rocky Bar District, Idaho In Contributions To Econ. Geol., 1923 - 1924: USGS Bulletin 750, P. 87 - 99.

Reference (Deposit): King, R. V., 1964, Mineral Resources - Molybdenum, In Mineral And Water Resources Of Idaho: Idaho Bureau Of Mines And Geology Spec. Rept. No. 1, P. 137.

Reference (Deposit): 1925 Other F. C. Schrader, Bulletin 750

Reference (Deposit): 1964 Compile Idaho Bureau Of Mines And Geology Spec. Rept. 1

Reference (Deposit): Ballard, S.M., 1928, Geol. & Ore Deposits Of Rocky Bar Quad: Idaho Bureau Of Mining & Geology Pamphlet 2

Reference (Deposit): U.S. Bureau Of Mines Open-File Report MLA 10-91, 1991, P. 7.

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.