1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Moore Mine

Past Producer in Napa county in California, United States with commodities Chromium, Platinum, Palladium, Iridium, Ruthenium, Rhodium
Map
XML
JSON
KML
B
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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10031629
MRDS ID M010725
Record type Site
Current site name Moore Mine
Alternate or previous names Marshall and Vanderbilt Claims

Geographic coordinates

Geographic coordinates: -122.34495, 38.79738 (WGS84)
Elevation 488
Location accuracy 100(meters)
Relative position ABOUT 2 MI SOUTH OF KNOXVILLE, Accurate Within Group Of Claims And For Pge Sample Collection Site

Site location context

Political divisions (FIPS codes)

Napa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Knoxville(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 011N 004W 17,18,19 SW4 (17); E2 (18); NE4 (19); SW4 (19) California

Comments on the location information

  • UTM GIVEN IS FOR PGE SAMPLE COLLECTION SITE. LAT/LONG GIVEN ARE FOR NORTHERN ADIT SYMBOL IN SE/4 SEC. 18. UTM FOR THIS IS 4294320N, 557060E.

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Tertiary
Palladium Critical Tertiary
Iridium Critical Tertiary
Ruthenium Critical Tertiary
Rhodium Critical Tertiary

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue

Analytical data

Result 1 PGE ANALYSIS: PT=141 PPB
Result PD=128 PPB
Result IR=450 PPB
Result RU=1,670 PPB
Result RH=38 PPB.

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Coast Range Ophiolite
    Rock description Coast Range Ophiolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -122.34495, 38.79738
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Vertical Shear Striking Northeast Can Be Traced For 1,500 Ft

Ore body information

  • General form LENSES

Controls for ore emplacement

  • Magmatic Segregation

Economic information about the deposit and operations

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

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner John Moore
    First year 1946

Comments on the production information

  • LARGEST DEPOSITS WERE ON THE MARSHALL AND VANDERBILT CLAIMS. SHIPMENTS WERE ABOUT EQUAL FOR BOTH CLAIMS

Workings at the site

  • Type of workings Surface/Underground
    Overall length 15.24M

Comments on the workings information

  • OPEN CUTS, PITS, AND TRENCHES. LARGEST OPEN CUT IS 50 FT LONG AND 25 FT DEEP. ADITS SHOWN ON TOPOGRAPHIC MAP

Reference information

Bibliographic references

  • Deposit

    DOW, D.H., AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 2, CH. 1, P. 21-22.

  • Deposit

    CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.

General comments

Subject category Comment text
Deposit THERE ARE 5 PARALLEL LENSES UP TO 30 FT LONG AND 3 FT WIDE SCATTERED OVER A 50 FT WIDTH IN A SHEAR ZONE ON THE MARSHALL CLAIM

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-73 Gere, W. U.S. Geological Survey
Updater 01-FEB-90 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.