Little Gem No. 7 Mine

Past Producer in Idaho county in Idaho, United States with commodities Gold, Silver, Copper, Lead, Zinc, Molybdenum
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. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Mineral rights holdings
  17. Land status
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10071757
MRDS ID W015300
MAS/MILS ID 0160490789
Record type Site
Current site name Little Gem No. 7 Mine

Geographic coordinates

Geographic coordinates: -115.26096, 45.20848 (WGS84)
Elevation 2134
Relative position 6.25 MI NE OF BIG CREEK RANGER STATION

Site location context

Political divisions (FIPS codes)

Idaho(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Big Creek(quadrangle 1:24,000 scale)

Warren(quadrangle 1:100,000 scale)

Elk City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Middle Fork Salmon(hydrologic unit)

Salmon(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Payette National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Frank Church-River of No Return Wilderness(Wilderness)

Wilderness 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 022N 010E 32 NWNW Idaho

Comments on the location information

  • Land Status Value Calculated 7-94 Using GIS Overlay Analysis With USFS Land Ownership Boundaries, 1:126,720 Scale. Land Status Value Calculated 7-94 Using GIS Overlay Analysis With NFS Paper Copies: (Scale 1:126,720); Previous Quad Designation = Grangeville 1:250000

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Lead Tertiary
Zinc Critical Tertiary
Molybdenum Tertiary

Comments on the commodity information

  • Less Than 0.02% Pb, Zn, Mo.

Materials information

Materials Type of material
Chalcopyrite Ore
Biotite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Gouge

Analytical data

Result TRACES AU, AG, CU IN SHEAR ZONE. AVERAGE GRADE OF VEINS 1.9 OZ AU, 4.3 OZ AG/TON
Result 0.37% CU. LESS THAN 0.02 % PB, ZN, MO

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Syenite
    Rock unit name Ramey Ridge Equivalent-Syenite
    Rock description Ramey Ridge Equivalent-Syenite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Syenite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -115.26096, 45.20848

Economic information

Geologic structures

Type of structure Local
Structure name Brecciation
Structure description Brecciation

Ore body information

  • Strike N 7 DEG E
    Dip 65 DEG W
    Width 1.22M

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1914
Discoverer Charles Mahan

Mining district

District name Ramey Ridge District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest
Area name Payette National Forest
Ownership category National Primitive Area
Area name Idaho Primitive Area

Comments on the production information

  • Production Less Than 300 Tons

Workings at the site

  • Type of workings Underground
    Length 41.76M

Comments on development

  • 7 Claims

Reference information

Bibliographic references

  • Deposit

    Cater, F. W., And Others, 1973, Mineral Resources Of The Idaho Primitive Area And Vicinity, Idaho: USGS Bulletin 1304, 431 P

  • Production

    Cater, F. W., And Others, USGS Bulletin 1304.

  • Deposit

    Mines And Prospects Of The Elk City Quad., IBMG Mines And Prospects Map Series, Ve Mitchell, Et Al.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-74 Miller, Pat J. U.S. Geological Survey SOURCES & UPGRADES EDITS
Editor 01-JUN-74 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey
Reporter 13-OCT-90 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.