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Dismal Swamp Placer Mine

Past Producer in Elmore county in Idaho, United States with commodities Niobium (Columbium), Titanium, Tantalum, Uranium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10089169
MRDS ID W013682
MAS/MILS ID 0160390043
Record type Site
Current site name Dismal Swamp Placer Mine

Geographic coordinates

Geographic coordinates: -115.37014, 43.72928 (WGS84)
Elevation 2103
Relative position JUST WEST OF THE BEAR CREEK MINING DISTRICT, 6 1/2 MI. NW OF ROCKY BAR, ID.

Site location context

Political divisions (FIPS codes)

Elmore(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rocky Bar(quadrangle 1:24,000 scale)

Idaho City(quadrangle 1:100,000 scale)

Hailey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North and Middle Forks Boise(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Boise National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Idaho Elmore

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 005N 009E 22,27,33,34,35 NE (34) Idaho

Comments on the location information

  • 1 1/2 Mi. By Jeep Road From A Point On The Rocky Bar - Cougar Creek Road; On Headwaters Of Northwesternmost Principal Fork Of Buck Creek.

Commodities

Commodity Importance
Niobium (Columbium) Critical Primary
Titanium Critical Tertiary
Tantalum Critical Tertiary
Uranium Tertiary

Materials information

Materials Type of material
Anatase Ore
Cassiterite Ore
Columbite Ore
Garnet Ore
Ilmenite Ore
Magnetite Ore
Monazite Ore
Rutile Ore
Xenotime Ore
Zircon Ore
Feldspar Gangue
Quartz Gangue
Topaz Gangue

Alteration

  • (Local) Sericite

Analytical data

Result IN THE AGGREGATE, THE GRAVEL CONTAINS 1.40 - 1.87 LBS. "WEAKLY MAGNETIC" MATERIAL/CUBIC YARD, AVERAGING 14 - 20% NB2O5 + TA2O5, AND .15 - .19% U3O8.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Idaho Batholith-Granodiorite, Granitic Rocks
    Rock description Idaho Batholith-Granodiorite, Granitic Rocks
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Holocene
    Stratigraphic age (youngest) Holocene
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Rock unit name Alluvium-Sand And Gravel
    Rock description Alluvium-Sand And Gravel

Nearby scientific data

(1) -115.37014, 43.72928
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Thickness 3.05M
    Length 804.65M
    Width 121.92M

Economic information about the deposit and operations

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

Mining district

District name Rocky Bar Area

Land status

Ownership category National Forest
Area name Boise National Forest

Comments on the workings information

  • Sixteen Bulldozer Trenches, 2 Shafts, And 25 Churn - Drill Holes Totaling 329.4 Ft. Of Drilling.

Comments on development

  • Property Consists Of 10 Continuous, Unpatented Placer Mining Claims. Only Two Claims, Associated Gem Groups Nos. 2 & 3, Were Explored. ; Econ.Com: Graded Dirt Road To Within 20 Mi. Of Mountain Home, Id.; Rest Of The Way Is Paved. Union Pacific R. R. Passes Through Mountain Home.

Reference information

Bibliographic references

  • Deposit

    Armstrong, F. C., 1957, Dismal Swamp Placer Deposit, Elmore County, Idaho: U. S. Geological Survey Bulletin 1042 - K, P. 383 - 392.

  • Deposit

    Parker, R. L., 1964, Mineral Resources - Niobium And Tantalum, In Mineral And Water Resources Of Idaho: Idaho Bureau Of Mines And Geology Special Rept. No. 1, P. 142.

  • Deposit

    1951 Recon Idaho Bureau Of Mines And Geology Pamphlet 91

  • Deposit

    1956 Compile Mackin, J. H., Prof. Paper 300

  • Deposit

    1957 Recon Anderson, F. C., Bulletin 1042 - K.

  • Deposit

    1964 Compile Idaho Bureau Of Mines And Geology Spec. Rept. 1

  • Deposit

    Savage, C. N., 1961, Economic Geology Of Central Idaho Blacksand Placers, Idaho Bureau Of Mines And Geology, Bulletin 17

  • Production

    Parker, R. L., 1964, Idaho Bureau Of Mines And Geology Spec. Rept. No. 1

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1975 Parker, Raymond L. U.S. Bureau of Mines
Reporter 01-JUL-1976 Everett, Sandra E. (Miller, Pat) U.S. Geological Survey
Reporter 12-JUL-1993 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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