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Brown's Mountain

Occurrence in Del Norte county in California, United States with commodity Nickel
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10033763
MRDS ID M020408
Record type Site
Current site name Brown's Mountain

Geographic coordinates

Geographic coordinates: -123.96144, 41.93732 (WGS84)
Relative position ON PLATEAU-LIKE FEATURE NEAR BROWN'S CHROME MINE. ACCESSIBLE BY 28MI. OF GRADED AND UNIMPROVED DIRT ROAD FROM O'BRIEN, OREGON OR BY 35 MI. OF GRADED DIRT ROAD FROM SMITH RIVER, CALIF.

Site location context

Political divisions (FIPS codes)

Del Norte(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

High Plateau Mountain(quadrangle 1:24,000 scale)

Happy Camp(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Smith(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Six Rivers 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 California Del Norte

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 018N 002E 16,17,20,21,28,29 California

Comments on the location information

  • OVERLAPS BROWN'S CHROME MINE UTM APPROX. LOC.

Commodities

Commodity Importance
Nickel Critical Tertiary

Analytical data

Result 9 AUGER HOLES TO DEPTH OF 5 FT. EACH IN 40 ACRES SAMPLED LATERITE TAT AVERAGED 0.95 PERCENT NICKEL. ORE GRADE RANGES BETWEEN 0.42 PERCENT AND 1.50 PERCENT NICKEL.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -123.96144, 41.93732
ListMap

Economic information

Ore body information

  • Thickness 2.13M

Comments on the geologic information

  • GEOL.DESC: ABOUT 350 ACRES OF NICKEL-BEARING LATERITIC SOIL IS UNDERLAIN BY SAXONITE THAT IS SLIGHTLY ALTERED TO SERPENTINITE THROUGHOUT AREA, AND ESPECIALLY ALONG CONTACTS AND IN SHEAR ZONES WHERE IT HAS BEEN CONVERTED TO DARK GREENISH-BLACK SERPENTINITE. CHROMITE WAS MINED FROM LENSES OF DUNITE ENCLOSED IN SERPENTINIZED SAXONITE. LATERITE RANGES FROM LESS THAN 1 FT. TO AT LEAST 7 FT., MANTLES THE SAXONITE. LATERITE IS AT LEAST 5 FT. DEEP, IS ROCKY AND DEEP REDDISH-BROWN IN COLOR.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1954

Ownership information

  • Type Owner
    Owner Brown'S Chrome Mine On High Plateau Mining Claim In Sec. 28 , T 18 N, R 2 E., Hbm, Is Owned By Eugen

Reference information

Bibliographic references

  • Deposit

    BRIGHT, J.H., 1974 ( 1958 ), PRIVATE COMMUNICATION.

  • Deposit

    WELLS, FRANCIS G., FRED W. CATER JR., AND GARN A. RYNEARSON, 1946 , CHROMITE DEPOSITS OF DEL NORTE COUNTY, CALIF: CALIF. DIV. OF MINES BULL. 134 , PART 1 , CHAPTER 1 , 76 P.

  • Deposit

    CHESTERMAN, C. W., 1976 , WRITTEN COMMUNICATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1978 Killman, K.; Albers, J. U.S. Geological Survey

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.