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Black Cloud Group

Past Producer in Trinity county in California, United States with commodity Gold
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10035888
MRDS ID M023832
Record type Site
Current site name Black Cloud Group
Related records 10166235

Geographic coordinates

Geographic coordinates: -122.92222, 40.76291 (WGS84)
Elevation 792
Relative position CLAIMS OCCUR ON GENTLE SLOPES CUT BY SMALL RAVINES, 4.3 MI. SE MONUMENT PEAK

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rush Creek Lakes(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Trinity(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 034N 009W 31,32 California

Comments on the location information

  • UTM EST. BORDER OF SECTIONS

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Alteration

  • (Local) Highly-Weathered And Decomposed Zone Near Surface

Analytical data

Result ASSAYED $4-$6/TON IN GOLD, BASED ON 3 SURFACE SAMPLES TAKEN BY E.N. TODD, WHO OPTIONED THE CLAIMS, AND A RUN OF 40 TONS TREATED IN SMALL MILL SOME YEARS AGO.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)

Economic information

Comments on the geologic information

  • GEOLOGY DESCRIBED AS META SEDIMENTARY SERIES WITH POSSIBLE INTERBEDDED LAVA, INTRUDED BY FINE-GRAINED PORPHYRITIC DIKES OF MORE THAN ONE KIND-SOME LIGHT IN COLOR, OTHERS DARK. MICA SCHIST MOST PREDOMINANT OF METAMORPHICS SERIES, BUT STRATA FEW INCHES THICK OF SLATY MATERIAL AND SILICEOUS MATERIAL OCCUR ALSO.

Economic information about the deposit and operations

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

Land status

Ownership category National Forest

Comments on the workings information

  • SUPERFICIAL SURFACE CUTS DID NOT PENETRATE OXIDIZED ZONE

Reference information

Bibliographic references

  • Deposit

    AVERILL, C.V., 1941, MINERAL RESOURCES OF TRINITY COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 37, NO. 1, P. 26-27

General comments

Subject category Comment text
Deposit VEIN(S)
Deposit 9 UNPATENTED LODE CLAIMS ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1980 Nelson, Scott C. (Albers, John, P.) 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.