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Dewey

Past Producer in Trinity county in California, United States with commodities Gold, Copper, Iron
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  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 10035868
MRDS ID M023803
Record type Site
Current site name Dewey
Related records 10281219

Geographic coordinates

Geographic coordinates: -122.76305, 41.07345 (WGS84)
Elevation 1097
Relative position 2 MI. S. COFFEE CREEK RANCH, ON LITTLE BOULDER CREEK,

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ycatapom Peak(quadrangle 1:24,000 scale)

Mount Shasta(quadrangle 1:100,000 scale)

Weed(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 037N 008W 10 California

Comments on the location information

  • UTM EST. S 1/2 S 1/2, LOC. EST. FROM DESCRIPTION IN REF. UNCERTAIN.

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Iron Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Iron Ore
Pyrite Ore
Calcite Gangue
Quartz Gangue
Siderite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry > Lamprophyre
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Porphyry > Lamprophyre

Nearby scientific data

(1) -122.76305, 41.07345
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 85 SE
    Thickness 1.22M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1899

Land status

Ownership category National Forest

Comments on the production information

  • NO SPECIAL PRODUCTION RECORD FOUND. SOON AFTER DISCOVERY, CONSIDERABLE QUANTITY OF OXIDIZED CROPPINGS WORKED, YIELDING $700

Comments on the workings information

  • 150 FT. OF DRIFTS: FROM CROSSCUT ADIT

Reference information

Bibliographic references

  • Deposit

    AVERILL, C.V., 1931, TRINITY COUNTY: CALIF. JOUR. OF MINES AND GEOLOGY, V. 27, P. 32

  • Deposit

    MACDONALD, D. F., 1912, GOLD LODES OF THE CARRVILLE DISTRICT: U.S. GEOLOGICAL SURVEY BULL. 530-D, P. 33

General comments

Subject category Comment text
Deposit VEIN, 4 FT. THICK. ORE WAS LOW GRADE. GOLD OCCURED MOSTLY IN SULFIDES, IN SOME OF POST-VEIN FISSURES, AND IN IRON OXIDES.

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.