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  3. Mineral Resource Data System (MRDS)

Aetna Extension

Occurrence 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  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 10040783
MRDS ID M055654
Record type Site
Current site name Aetna Extension

Geographic coordinates

Point of reference Trench
Geographic coordinates: -122.51051, 38.66599 (WGS84)
Elevation 427
Location accuracy 100(meters)
Relative position Deleted MAS record gave point of ref. as trench with 100 m accuracy. Used that location instead of 38-39-58, -122-30-34, NAD 27.

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 SE California

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

Trench (1) -122.51051, 38.66599
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Contact With Basalt Dike Local Fractures

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1895

Mining district

District name East Mayacmas

Ownership information

  • Type Owner
    Owner Lawrence Lindblom

Workings at the site

  • Type of workings Surface/Underground
    Length 487.68M

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.

  • Deposit

    DAVIS, F.F., 1948, MINES AND MINERAL RESOURCES OF NAPA COUNTY, CALIF.: CJMG, V. 44, P. 178, 413-414.

  • Deposit

    YATES, R.G., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIF.: CJMG, V. 42, P. 231-286

  • Production

    HOLMES, G. W., JR., 1965

General comments

Subject category Comment text
Deposit Discovery Year: 1890'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-76 Peterson, Jocelyn A. U.S. Geological Survey
Reporter 04-NOV-83 Western Field Operations Center (WFOC) U.S. Geological Survey MAS 0060550130 = newMRDS 10139698
Editor 05-NOV-10 Wilson, Anna B. U.S. Geological Survey MAS 0060550130 = newMRDS 10139698, merged and deleted.

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.