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  3. Mineral Resource Data System (MRDS)

Marin Co.No.25

Unknown in Marin county in California, United States with commodity Manganese
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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. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10139578
MAS/MILS ID 0060410025
Record type Site
Current site name Marin Co.No.25

Geographic coordinates

Point of reference Trench
Geographic coordinates: -122.48075, 37.8402 (WGS84)
Elevation 80
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Marin(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Francisco North(quadrangle 1:24,000 scale)

San Francisco(quadrangle 1:100,000 scale)

San Francisco(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Pablo Bay(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Federal lands

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States California Marin

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001 S 006 W 13 NWSW California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Pyrolusite Unknown

Nearby scientific data

Trench (1) Franciscan Complex, unit 1 (Coast Ranges)
ListMap

Economic information

Ore body information

  • Strike N70W
    Dip 67S
    Thickness 2M
    Length 15M
    Width 5M
    Depth to top 2M
    Field Value
    MAS Matrix # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 UNKNOWN
    Type of Orebody #2 DISSEMINATED
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin OXIDATION
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. NONE
    Strike And Dip N70W:67S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 2
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316
  • Area 10HA
    Field Value
    Total Surface Area (HA) 10
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category State Park

Ownership information

  • Type Owner
    Owner Fort Baker Military Reservation-Marin Headlands State Pk
    Interest 100
    Home office California
    Year 1975

Comments on the reserve resource information

  • THERE MAY BE AN ADDITIONAL 500,000 TONS OF 1-2 PCT.N.OF MAIN

Reference information

Bibliographic references

  • Deposit

    CALIF JOUR MINES AND GEOL V 51 NO 3 JULY 1955 P 279

  • Deposit

    IN PIKE COUNTY GULCH ABOUT 1 MI S OF THE UNION GULCH MINE CO

  • Deposit

    ON GULCH MINE BE SAME AS COPPER GULCH MINE MAY BE SECTION 18

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Deino, Al 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.