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  3. Mineral Resource Data System (MRDS)

Valley

Past Producer in Napa county in California, United States with commodity Mercury
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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. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10040803
MRDS ID M055677
Record type Site
Current site name Valley
Alternate or previous names Lidell

Geographic coordinates

Geographic coordinates: -122.51274, 38.67071 (WGS84)

Site location context

Political divisions (FIPS codes)

Napa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Detert Reservoir(quadrangle 1:24,000 scale)

Healdsburg(quadrangle 1:100,000 scale)

Santa Rosa(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 Napa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 010N 006W 34 California

Comments on the location information

  • LOCATED AT CENTER OF SECTION

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore

Alteration

  • (Local) Silica Carbonate Alteration Of Serpentine, Hydrothermal Alteration

Analytical data

Result 10 ASSAYS SHOWED MAX OF 18.3 LB/TON. LATER ASSAYS AVERAGED ABOUT .6 LB/TON

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -122.51274, 38.67071
ListMap

Economic information

Economic information about the deposit and operations

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

Mining district

District name East Mayacmas

Ownership information

  • Type Owner
    Owner George S. Hiebel

Comments on the production information

  • GENERAL GRADE ABOUT 10 LB/TON

Workings at the site

  • Type of workings Underground
    Length 243.84M
    Overall depth 30.48M

Comments on the workings information

  • FUMES AND WATER FORCED ABANDONMENT BEFORE 1890

Reference information

Bibliographic references

  • Deposit

    HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252

  • Deposit

    YATES, R. G. AND HILPERT, L. S., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, P. 231 - 286

  • Deposit

    BAILEY, E. H., USGS, PERSONAL FILES

  • Deposit

    1958 DIREXPL DME

  • Production

    YATES AND HILPERT, 1946.

General comments

Subject category Comment text
Deposit SITE OF ORIGINAL CINNABAR DISCOVERY IN MAYACMAS DISTRICT. MAY NOW BE CONSIDERED PART OF AETNA PROPERTY ; INFO.SRC : BAILEY E H

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 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.