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Baxter Winthrope

Past Producer in Shasta county in California, United States with commodities Copper, Silver, 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  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 10033802
MRDS ID M020449
Record type Site
Current site name Baxter Winthrope
Alternate or previous names Baxter, Winthrope, Copper City
Related records 10165018

Geographic coordinates

Geographic coordinates: -122.2197, 40.78346 (WGS84)
Elevation 286
Relative position 1 MILE SW OF BULLY HILL

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Minnesota Mountain(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Pit(hydrologic unit)

Upper Sacramento(hydrologic accounting unit)

Sacramento(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 Shasta

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 034N 003W 21,28 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Limonite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Bully Hill Rhyolite
    Rock description Bully Hill Rhyolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -122.2197, 40.78346
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Shear Zone - N 20 Degrees E

Ore body information

  • General form LENTICULAR
    Strike NW
    Dip VERTICAL
    Thickness 3.66M

Controls for ore emplacement

  • Ore Lenses Found Along Verticle Shear Zones In The Buddy Hill Rhyolite.

Comments on the geologic information

  • GEOL.DESC: SHEAR ZONES CUT EAST LIMB OF ANTICLINE IN BUDDY HILL RHYOLITE. MUCH OF COUNTRY ROCK IS STRONGLY SILICIFIED.

Economic information about the deposit and operations

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

Mining district

District name East Shasta Copper-Zinc

Land status

Ownership category National Forest

Production statistics

  • Year 1863
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^8% Cu, $40/Ton Au $20/Ton Ag.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 8wt-pct

Comments on the production information

  • 119 TONS OF SULFIDE ORE IN 1926-1927

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 51.82M
    Overall length 304.8M

Comments on the workings information

  • CLAIMS ARE THE EXCELSIOR, BROWN, HUMBOLDT AND BAXTER. PRINCIPLE WORK CONSISTED OF DRIFTING AT 3 LEVELS, 815 , 936 AND 1,060 FT IN ALTITUDE ALONG COPPER CITY SHEAR ZONE. WINTHROP ADIT WAS STOPED TO SURFACE.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SULFIDE DEPOSITS ARE IN BULLY HILL RHYOLITE ON THE EAST FLANK OF A SOUTHWARD PLUNGING ANTICLINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1978 Fraticelli, L. A. (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.