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Ries and Jacobsen

Occurrence in Napa county in California, United States with commodity Manganese
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031646
MRDS ID M010764
Record type Site
Current site name Ries and Jacobsen

Geographic coordinates

Geographic coordinates: -122.4505, 38.71349 (WGS84)
Relative position 1 1/2 MI. FROM RUTTS CANYON ROAD FROM MIDDLETOWN TO POPE VALLEY, 1/2 MI. S.E. OF VALENTINE KRAMER RANCH.

Site location context

Political divisions (FIPS codes)

Napa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Aetna Springs(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 005W 18 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE 20 PERCENT MANGANESE, 55 PERCENT SILICA.

Nearby scientific data

(1) -122.4505, 38.71349
ListMap

Economic information

Ore body information

  • Thickness 1.83M

Comments on the geologic information

  • GEOL.DESC: MANGANESE OCCURS AS MASSIVE SILICEOUS BED ENCLOSED IN THIN BEDDED RADIOLARIAN CHERTS, WHICH STRIKE AT VARYING ANGLES AND DIP 50 TO 60 NE. ORE IS SILICEOUS BLACK MANGANESE OXIDES WITH SILICA CORES AND STREAKS OF RED CHERT. THIN SEAMS OF SILICEOUS ORE ARE INTERCALATED IN ENCLOSING CHERT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner R. M. Ries And Oscar Jacobsen.

Comments on the production information

  • NO PRODUCTION.

Comments on the workings information

  • TRENCHES, TUNNEL.

Reference information

Bibliographic references

  • Deposit

    CALIF. BULL. 125, 1943, P. 146

  • Deposit

    BULL. 152, 1950, P. 161

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1977 Killman, K.; 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.