Rocky Bar

Past Producer in Elmore county in Idaho, United States with commodities Gold, Platinum, Silver

Geologic information

Identification information

Deposit ID 10038187
MRDS ID M045488
Record type Site
Current site name Rocky Bar

Geographic coordinates

Geographic coordinates: -115.29314, 43.69068 (WGS84)
Elevation 1600
Location accuracy 1000(meters)
Relative position ABOUT 45 MI EAST OF BOISE
(click for info)

Geographic areas

Country State County
United States Idaho Elmore

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 004N 010E 08 Idaho
Boise 003N 009E Idaho


Commodity Importance
Gold Primary
Platinum Tertiary
Silver Tertiary

Materials information

Materials Type of material
Chromite Ore
Gold Ore
Ilmenite Ore
Magnetite Ore
Platinum Ore
Quartz Gangue

Analytical data

Result RECALCULATES TO PT=0.00013 OZ/TON (3 PPB), AU=0.0018 OZ/TON (62 PPB)

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Holocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -115.29314, 43.69068

Ore body information


Controls for ore emplacement

  • Stream Hydraulics

Economic information

Economic information about the deposit and operations

Operation type Placer
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1862

Mining district

District name Bear Creek And Red Warrior Districts

Land status

Ownership category National Forest
Area name Boise National Forest

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M045488
USGS Mineral Resources Data System MRDS D001491 data consolidated into this record

Bibliographic references

  • Deposit

    Day, D.T., And Richards, R.H., 1906, Useful Minerals In The Black Sands Of The Pacific Slope: U.S. Geological Survey Mineral Resources Of The United States, Calendar Year 1905, P. 1195-1196.

  • Deposit

    Ballard, S.M., 1928, Geology And Ore Deposits Of The Rocky Bar Quadrangle: Idaho Bureau Of Mines And Geology Pamphlet 26, P. 17, 22-26.

  • Deposit

    Staley, W.W., 1946, Gold In Idaho, Idaho Bureau Of Mines And Geology Pamphlet 68, P. 19, Fig. 15.

  • Deposit

    Savage, C.N., 1961, Economic Geology Of Central Idaho Blacksand Placers: Idaho Bureau Of Mines And Geology Bulletin 17, P. 71-75.

  • Deposit

    Ross, C.P., 1941, The Metal And Coal Mining Districts Of Idaho, With Notes On The Nonmetallic Mineral Resources Of The State: Idaho Bureau Of Mines And Geology Pamphlet 57, P. 47.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-74 Fisher, Fred S. U.S. Geological Survey
Reporter 01-FEB-75 Blair, Will N. U.S. Geological Survey
Updater 01-JAN-90 Peterson, Jocelyn A. U.S. Geological Survey