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Amargosa Group

Prospect in Los Angeles county in California, United States with commodities Manganese, 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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Land status
  11. Ownership information
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10188037
MRDS ID M020054
MAS/MILS ID 0060370005
Record type Site
Current site name Amargosa Group
Alternate or previous names Black Brothers, Llewellyn Iron Property
Related records 10095173

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -118.1856, 34.58311 (WGS84)
Elevation 853
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Los Angeles(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ritter Ridge(quadrangle 1:24,000 scale)

Lancaster(quadrangle 1:100,000 scale)

Los Angeles(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Antelope-Fremont Valleys(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Los Angeles

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006 N 012 W 30 NE California

Commodities

Commodity Importance
Manganese Critical Tertiary
Silica Tertiary

Nearby scientific data

Main Entrance (1) -118.1856, 34.58311
ListMap

Economic information

Ore body information

  • Area 1HA
    Field Value
    Total Surface Area (HA) 1
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Prospect
Commodity type Metallic
Significant No
Discovery year 1915
Year of first production 1918

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Clarence Black
    Interest 100
    Home office California
    Year 1940

Reserves and resources

  • Type In-situ
    Estimate year 1977
    Inferred 3000mt ore
    Total resources 5000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 20 wt-pct Manganese Trace 1977
    Silica SiO2 50 wt-pct Silica Trace 1977
  • Type In-situ
    Estimate year 1977
    Inferred 500mt ore
    Total resources 1000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 35 wt-pct Manganese Trace 1977
    Silica SiO2 40 wt-pct Silica Trace 1977

Reference information

Bibliographic references

  • Deposit

    CALIF. DIV. MINES BULLETIN 152, 1950, P. 100-101.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 50, 1954, NO. 65, P. 638.

General comments

Subject category Comment text
Deposit TONNAGE & GRADE ESTIMATES FROM WFOC (USBM) UNPUBLSHD DATA(I.F

Reporter information

Type Date Name Affiliation Comment
Reporter 31-MAR-1991 Henson 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 California resources

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