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McComas Magnetite Prospect

Prospect in Idaho county in Idaho, United States with commodity Iron
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Mineral rights holdings
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10090094
MRDS ID W014900
MAS/MILS ID 0160490120
Record type Site
Current site name McComas Magnetite Prospect
Alternate or previous names Iron Cap, Green Creek Lookout, Iron Boy, George #1

Geographic coordinates

Geographic coordinates: -115.89789, 45.93767 (WGS84)
Elevation 1372
Relative position 5 MI SE OF HARPSTER

Site location context

Political divisions (FIPS codes)

Idaho(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Harpster(quadrangle 1:24,000 scale)

Elk City(quadrangle 1:100,000 scale)

Elk City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Clearwater(hydrologic unit)

Clearwater(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Nez Perce-Clearwater 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 Idaho

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 030N 004E 13 Idaho

Comments on the location information

  • W. Side Of Valley Of N. Fk. Of N. Meadow Creek

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Magnetite Ore
Siderite Gangue

Analytical data

Result ORE IS GRANULAR MAGNETITE, POROSITY 10 - 30%
Result HIGH GRADE

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Belt Supergroup
    Rock description Belt Supergroup-Banded Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -115.89789, 45.93767
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Linear Schistosity

Ore body information

  • General form PODS
    Width 3.35M
    Depth to bottom 22.86M

Controls for ore emplacement

  • Foliation

Comments on the geologic information

  • Foliation Trends N - S

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900
Discoverer Owen Morgan, Tig Newman

Mining district

District name Harpster District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest
Area name Nez Perce National Forest

Ownership information

  • Type Owner
    Owner J. B. Mc Comas

Workings at the site

  • Type of workings Surface/Underground
    Overall length 3.66M

Comments on the workings information

  • 2 Adits, Trench

Comments on development

  • 2 Unpatented Claims, Iron Cap No. 1 & 2

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 28-JAN-1981 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.

Maps centered on this site