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John J. Lewis Prospect

Occurrence in Siskiyou 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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10033618
MRDS ID M020226
Record type Site
Current site name John J. Lewis Prospect

Geographic coordinates

Geographic coordinates: -122.8989, 41.5629 (WGS84)
Elevation 945
Relative position ON THE E. SIDE OF CHAPPARAL HILL, 1.5 MI. S. E. OF OROFINO IN SCOTT VALLEY. ON A RANCH ROAD, ONE MI. E. OF HIGHWAY FROM OROFINO TO FORT JONES. 29 MI. BY ROAD TO YREKA.

Site location context

Political divisions (FIPS codes)

Siskiyou(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenview(quadrangle 1:24,000 scale)

Yreka(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Scott(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 043N 009W 20 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result AVERAGE 15 PERCENT MANGANESE

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert
    Stratigraphic age (youngest) Late Silurian

Nearby scientific data

(1) -122.8989, 41.5629
ListMap

Economic information

Ore body information

  • Length 4.57M
    Width 1.22M

Comments on the geologic information

  • GEOL.DESC: ORE CONSISTS OF CRUDELY BANDED OXIDE IN QUARTZITE. PRIMARY ORE MAY BE BANDED RHODOCHROSITE AND QUARTZITE, AS IN SIMILAR DEPOSIT. HOST ROCK IS FINE GRAINED QUARTZITE SEEMINGLY DERIVED FROM THIN-BEDDED CHERT. STRIKE IS N. E. AND DIP IS VERTICAL. ORE BODY IS LENTICULAR, 15 FT. LONG, WITH MAXIMUM WIDTH OF 4 FT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 P. 275

  • Deposit

    D.O.M. BULL. 125 1943 P. 184

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 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.