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  3. Mineral Resource Data System (MRDS)

St Lawrence

Past Producer in El Dorado county in California, United States with commodity Gold
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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. Production statistics
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10006936
MRDS ID C007793
Record type Site
Current site name St Lawrence
Alternate or previous names North St Lawrence, St Lawrence No 2, Guadalupe and St Louis

Geographic coordinates

Geographic coordinates: -120.83658, 38.82518 (WGS84)
Relative position 1 1/2 MI SE OF GARDEN VALLEY

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Garden Valley(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 010E 02,03,11 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.83658, 38.82518
ListMap

Economic information

Ore body information

  • Strike N 10 W
    Dip 60 NE
    Depth to top 0M

Comments on the geologic information

  • 6 FT THICK VEIN ON MOTHER LODE, OCCURS IN LENTICULAR FORMS NOT CONTINUING FOR ANY GREAT DISTANCE BUT INVARIABLY RETURNING IN SIMILAR VEINS ALONG SAME FISSURE. AT 550 FT DEPTH IN MAIN SHAFT QTZ SAID TO GIVE OUT TO FAULT GOUGE WHICH 160 FT N OF SHAFT AT 500 FT LEVEL IS 5 FT THICK W SLICKENSIDES ON BOTH WALLS.

Economic information about the deposit and operations

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

Production statistics

  • Year 1878
    Period 1867 - 1878
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 18g/mt

Comments on the production information

  • ORE RANGED FROM $8.54 TO $27/TON

Comments on the workings information

  • 900 FT INCLINED SHAFT W LEVELS AT 100 FT, 200 FT, 900 FT. WINZE FROM 900 FT LEVEL.

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL 52 , NO. 4 , PG 530 , PL 10 .

  • Deposit

    LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PL II

  • Deposit

    LOGAN, C. A., 1935 , MOTHER LODE GOLD BELT OF CALIF.: CALIF. DIV. MINES BULL. 108 , PG 40 , 41 .

  • Production

    CLARK AND CARLSON, 1956

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Hayden, F. (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.