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Hammer Property

Producer in Trinity county in California, United States with commodities Gold, Platinum, Osmium, Iridium
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10109530
MRDS ID M045304
Record type Site
Current site name Hammer Property
Alternate or previous names South Fork Gold and Platinum Mining Co.

Geographic coordinates

Geographic coordinates: -123.59419, 40.8904 (WGS84)
Elevation 137
Location accuracy 10000(meters)
Relative position 1/2 MI EAST OF CONFLUENCE OF SOUTH FORK AND TRINITY UP MAIN STREAM; COVERS 7/8 MI OF STREAM

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Salyer(quadrangle 1:24,000 scale)

Hayfork(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Trinity(hydrologic unit)

Klamath(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 Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 006N 005E 14,15 California

Comments on the location information

  • IN SIX RIVERS NATIONAL FOREST. LOCATION GIVEN IS ON TRINITY RIVER BETWEEN SALYER AND CONFLUENCE WITH SOUTH FORK TRINITY RIVER. ACTUAL MINING TOOK PLACE ON BENCHES ABOVE STREAM LEVEL

Commodities

Commodity Importance
Gold Primary
Platinum Critical Secondary
Osmium Tertiary
Iridium Critical Tertiary

Comments on the commodity information

  • PGE COARSER THAN EXPECTED AND CONTAINS A LARGE PORPORTION OF OSMIRIDIUM

Materials information

Materials Type of material
Gold Ore

Analytical data

Result PT:AU= 4 OZ/$1,000 (1:12.09) AT ONE PLACE (LOGAN, P. 87)

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -123.59419, 40.8904
ListMap

Economic information

Ore body information

  • General form STREAM SEDIMENT DEPOSITS
    Thickness 14.33M

Controls for ore emplacement

  • Stream Hydraulics

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Trinity River Area

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner P. P. Hammer
    First year 1918

Comments on the production information

  • OTHER GRADE RANGE OF 0.0026-0.0065 OZ/TON (90-220 PPB) AU ALSO REPORTED

Workings at the site

  • Type of workings Surface
    Area 358.16HA

Comments on the workings information

  • HYDRAULIC

Reference information

Bibliographic references

  • Deposit

    LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 86-87.

  • Deposit

    CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 143-144.

  • Production

    LOGAN

General comments

Subject category Comment text
Deposit VALUES ARE IN SEVERAL OLDER BENCHES TO SEVERAL HUNDRED FEET ABOVE RIVER LEVEL

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1974 Blair, Will N. U.S. Geological Survey
Updater 01-JAN-1989 Peterson, Jocelyn A. 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.