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St. Lawrence

Past Producer in Placer county in California, United States with commodities Gold, Lead, Antimony, Silver
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10007693
MRDS ID C012150
Record type Site
Current site name St. Lawrence
Related records 10237398

Geographic coordinates

Geographic coordinates: -121.12742, 38.89989 (WGS84)
Elevation 256
Relative position 1 1/2 MI. NNE NEWCASTLE

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gold Hill(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012N 008E 07 California

Comments on the location information

  • UTM ACC S 1/2 , S 1/2 , SW 1/4

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Antimony Critical Secondary
Silver Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Stibnite Ore
Quartz Gangue

Analytical data

Result SULFIDES ASSAY $70 - $200/TON

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -121.12742, 38.89989
ListMap

Economic information

Ore body information

  • Strike E
    Dip 45 S
    Thickness 0.51M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Ophir

Comments on the production information

  • SOME PRODUCTION REPORTED 1903 - 1912 .. NO OTHER PRODUCTION RECORD FOUND. . NO OTHER PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 91.44M

Comments on the workings information

  • SHAFT, 2 TUNNELS, ADITS

Reference information

Bibliographic references

  • Deposit

    LOGAN, C. A., 1936 , GOLD MINES OF PLACER COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 32 , NO. 1 , P. 35 - 36 .

  • Deposit

    IRELAND, W., JR., 1888 , REPORT OF THE STATE MINERALOGIST: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 8 , P. 461 - 2 .

  • Deposit

    WARING, CLARENCE A., 1917 , PLACER COUNTY: REPORT 15 OF THE STATE MINERALOGIST, CALIFORNIA STATE MINING BUREAU, P. 350 , PL. FACING P. 318 .

  • Production

    LOGAN ( 1936 )

General comments

Subject category Comment text
Deposit VEIN 1 FT - 20 IN. THICK. CARRIES 2% SULFIDES.
Deposit PATENTED ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Nelson, Scott C. (Albers, John, P.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan 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.