1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Black Rock Group

Prospect in Esmeralda county in Nevada, United States with commodities Iron, Manganese, Phosphorus-Phosphates, Silica
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10173462
MAS/MILS ID 0320090017
Record type Site
Current site name Black Rock Group

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -117.84373, 37.76824 (WGS84)
Elevation 1674

Site location context

Political divisions (FIPS codes)

Esmeralda(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rhyolite Ridge(quadrangle 1:24,000 scale)

Goldfield(quadrangle 1:100,000 scale)

Goldfield(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fish Lake-Soda Spring Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Esmeralda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002 S 037 E 14 Nevada

Commodities

Commodity Importance
Iron Tertiary
Manganese Critical Tertiary
Phosphorus-Phosphates Tertiary
Silica Tertiary

Materials information

Materials Type of material
Chalcedony Unknown
Chert Unknown
Psilomelane Unknown
Pyrolusite Unknown
Wad Unknown

Nearby scientific data

Ore Body (1) -117.84373, 37.76824
ListMap

Economic information

Ore body information

  • Area 10HA
    Field Value
    Total Surface Area (HA) 10
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Prospect
Commodity type Both
Significant No
Discovery year 1939

Mining district

District name Fish Lake Marsh District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner C. W. Fletcher
    Interest 50
    Home office California
    Year 1976
  • Type Owner
    Owner D. F. Shively, J. T. Birchim, F. H. Watkins
    Interest 50
    Home office California
    Year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1950
    Measured 19500mt ore
    Indicated 21000mt ore
    Demonstrated 40500mt ore
    Inferred 23000mt ore
    Total resources 63500mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 8 wt-pct Manganese Trace 1950
    Silica SiO2 20 wt-pct Silica Trace 1950
    Iron Fe 2.5 wt-pct Iron Trace 1950
    Phosphorus-Phosphates P 0.15 wt-pct Phosphorus Trace 1950

Reference information

Bibliographic references

  • Deposit

    U.S.B.M. R.I.5446,TRENGROVE,1959

  • Deposit

    USBM R.I. #4717,BENSON,1950

  • Deposit

    NEVADA BUREAU OF MINES & GLG.,BULL.#78,P.58

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Mcmahan 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

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.