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  3. Mineral Resource Data System (MRDS)

Pennsylvania

Past Producer in Nevada county in California, United States with commodities Gold, Lead, Zinc, 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. Production statistics
  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 10007471
MRDS ID C011334
Record type Site
Current site name Pennsylvania
Alternate or previous names W.Y.O.D.

Geographic coordinates

Geographic coordinates: -121.05631, 39.20878 (WGS84)
Elevation 780
Relative position SE GRASS VALLEY

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Grass Valley(quadrangle 1:24,000 scale)

Yuba City(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Bear(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 016N 008E 34 California

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Zinc Critical Secondary
Silver Tertiary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result 1 TON CON. AVG. 2.5 - 4.5 OZ. AU. 5 - 8 OZ. AG

Host and associated rocks

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

Nearby scientific data

(1) -121.05631, 39.20878
ListMap

Economic information

Ore body information

  • General form SEAM, IRREGULAR SHOOTS QTZ. IS SHEARED, MASSIVE AND COMB
    Strike N
    Dip 20 - 40 W
    Thickness 1.22M
    Depth to top 0M

Economic information about the deposit and operations

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

Production statistics

  • Year 1892
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 36g/mt
  • Year 1893
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 28g/mt

Comments on the production information

  • AT 500 FT. LEVEL, W.Y.O.D. VEIN YIELDED $18 - $20 AU/TON. AT 700 FT. LEVEL, $50 AU/TON AND SULFIDES AVG. $250 - $300/TON (OLD PRICES). PRODUCTION GRADE VALUES BASED ON AU AT $20.67/OZ. FOR ADDITIONAL YEARLY PRODUCTION FIGURES, SEE JOHNSON ( 1940 ) P. 83 .

Workings at the site

  • Type of workings Underground
    Overall depth 1402.08M

Comments on the workings information

  • INCLINED SHAFTS, DRIFTS, TUNNEL, CROSSCUTS, 14 - 15 LEVELS, WINZE, STOPES

Reference information

Bibliographic references

  • Deposit

    LOGAN, C. A., 1941 , MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 37 , NO. 3 , PL. 3 .

  • Deposit

    MACBOYLE, E., 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUTNY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16 , P. 230 - 233 .

  • Deposit

    JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 83 - 86 .

  • Production

    MACBOYLE ( 1918 ) JOHNSON ( 1940 )

General comments

Subject category Comment text
Deposit 2 VEINS, AVG. 12 - 18 IN. THICK W/2 % SULFIDES
Deposit PATENTED CROSSCUTS CONNECT THE PENNSYLVANIA TO THE EMPIRE MINE ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-79 Bowman, J. And Albers, J. U.S. Geological Survey EDITED COMMODITY SIGNIFICANCE FIELDS
Updater 05-OCT-91 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey HOST ROCKS CHECKED, DELETED HOST ROCK FROM IGNEOUS ROCK TYPE.
Updater 04-DEC-92 Mosier, Dan U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-95 Mosier, Dan 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.