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Laton Mine

Past Producer in Sonoma county in California, United States with commodities Chromium, Platinum, Palladium, Iridium, Ruthenium, Rhodium
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10043532
MRDS ID M100312
Record type Site
Current site name Laton Mine
Alternate or previous names Principal Claims: Rattlesnake, Slats, Yellow Streak. Prospects: Burl, Lone Bird, Parmeter Ranch, Red Slide, Serpentine.

Geographic coordinates

Geographic coordinates: -123.13164, 38.6196 (WGS84)
Elevation 351
Location accuracy 100(meters)
Relative position 10.3 MI BY ROAD NORTH-NORTHWEST OF CAZADERO. ABOUT 10 MI NORTHEAST OF FORT ROSS, Accurate For Pge Sample Collection Site, Accurate For Pge Sample Collection Site

Site location context

Political divisions (FIPS codes)

Sonoma(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fort Ross(quadrangle 1:24,000 scale)

Point Arena(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Gualala-Salmon(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Sonoma

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009N;009N 012W;011W 13;18 NE4 OF SE4 (13); SW4 OF SW4 (18) California

Comments on the location information

  • SLATS AND RATTLESNAKE CLAIMS ARE IN SEC. 13; YELLOW STREAK CLAIM IS IN SEC. 18. ON SLOPES ABOVE AUSTIN CREEK. UTM GIVEN IS FOR PGE SAMPLE COLLECTION SITE. LAT/LONG GIVEN IS FOR LATON MINE SYMBOL SHOWN ON TOPO MAP. UTM FOR THIS IS 4274360N, 488620E.

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Tertiary
Palladium Critical Tertiary
Iridium Critical Tertiary
Ruthenium Critical Tertiary
Rhodium Critical Tertiary

Comments on the commodity information

  • ORE ON YELLOW STREAK CLAIM AVERAGES 51% CR2O3; OTHER TWO CLAIMS AVERAGE 10-15% CR2O3

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue
Serpentine Gangue

Alteration

  • (Local) Peridotite Is Serpentinized

Analytical data

Result 2 PGE ANALYSES: PT=27, 47 PPB
Result PD=1, 3 PPB
Result IR=49, 240 PPB
Result RU=210, 570 PPB
Result RH=9, 16 PPB. CR:FE=2.6:1

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Coast Range Ophiolite
    Rock description Coast Range Ophiolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) Tertiary-Cretaceous Coastal Belt Rocks
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Local Shearing

Ore body information

  • General form SMALL HIGH-GRADE LENSES, DISSEMINATED

Controls for ore emplacement

  • Magmatic Segregation

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1915
Year of first production 1916
Year of last production 1944

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Laton, A. S. And Roy
    First year 1943
  • Type Owner
    Owner Laton, A. J.
    Year 1943

Production statistics

  • Year 1918
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^51% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 51wt-pct
  • Year 1944
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^48% Cr2o3, Cr:Fe=2.6:1
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 48wt-pct

Comments on the reserve resource information

  • IF MAXIMUM DEPTH OF EACH LENS DOWNDIP IS ASSUMED EQUAL TO HALF THE OUTCROP LENGTH, RESERVES WOULD BE 10,000-15,000 TONS. RESERVES ARE MAINLY MILLING GRADE ORE

Reference information

Bibliographic references

  • Deposit

    DOW, D.H., AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 2, CH. 1, P. 26-27, 36.

  • Deposit

    CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.

  • Production

    DOW AND THAYER, 1946

General comments

Subject category Comment text
Deposit Discovery Year: 1910'S
Deposit MANY SMALL HIGH-GRADE LENSES EXPOSED ON YELLOW STREAK CLAIM; LARGEST CONTAINED ABOUT 15 TONS OF ORE. THREE LENSES ARE ON SLATS CLAIM - 125 X 10 X 5 FT, 70 X 15 X 2 FT, AND 50 X 10 X 5 FT. THEY STRIKE N TO NNW AND DIP ABOUT 20E. SOME LENSES BOUNDED BY SLICKENSIDED JOINTS. RATTLESNAKE CLAIM HAS ONE ORE BODY 35 FT LONG AND 10 FT WIDE. IT STRIKES N22W AND DIPS 65NE AND CONTAINS ABOUT 10% CR2O3.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-81 Oster, Karel L. (Albers, John P.) U.S. Geological Survey
Updater 01-FEB-90 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.