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  3. Mineral Resource Data System (MRDS)

Black Powder

Occurrence in Lake 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. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10030630
MRDS ID M008886
Record type Site
Current site name Black Powder
Related records 10260798

Geographic coordinates

Geographic coordinates: -122.45357, 38.85266 (WGS84)
Relative position 1 1/2 MI. S.W. FROM THE BASE OF A HIGH POINT COMPOSED OF FRANCISCAN GREENSTONE KNOWN LOCALLY AS BUTTE ROCK OR SHALY CLIFF.

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Jericho Valley(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)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012N 005W 31 California

Comments on the location information

  • LOCATED IN NW 1/4 NE 1/4 SECTION 31

Commodities

Commodity Importance
Manganese Critical Tertiary

Nearby scientific data

(1) -122.45357, 38.85266
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 40 NE
    Thickness 7.62M
    Length 9.14M

Comments on the geologic information

  • GEOL.DESC: ORE ZONE IS A SERIES OF MANGANIFEROUS IRON ORE BEDS IN CHERT ENCLOSED IN GREENSTONE OF THE FRANCISCAN GROUP. THE ORE ZONE IS 25 FT, THICK EXPOSED 30 FT ALONG THE N.W. STRIKE, AND DIPS 40 N.E. THE LOWER AND MIDDLE ZONES ARE SOFT RED IMPURE IRON OXIDE WITH LAYERS OF OPALINE IRON MANGANESE ORE. GREEN CHERT BEDS HAVE ELLIPSOIDAL MANGANESE NODULES UP TO 6 INCHES IN LENGTH AND 1 1/2 INCHES THICK.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Smith, T. M.

Comments on the production information

  • NO PRODUCTION.

Reference information

Bibliographic references

  • Deposit

    CALIF. B. 125, 1943, P. 124

  • Deposit

    CALIF. BULL. 152, PP. 88-89

General comments

Subject category Comment text
Deposit TOO LOW IN MANGANESE AND TOO HIGH IN SILICA TO HAVE ANY VALUE, THOUGH THE AMOUNT PRESENT APPARENTLY IS LARGE.

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.