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  3. Mineral Resource Data System (MRDS)

Spread Eagle

Occurrence in Shasta county in California, United States with commodities Copper, 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. Geologic structures
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10033885
MRDS ID M020535
Record type Site
Current site name Spread Eagle
Related records 10116375

Geographic coordinates

Geographic coordinates: -122.48888, 40.71513 (WGS84)
Elevation 914
Relative position 4 MILES WEST OF SHASTA DAM

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Shasta Dam(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sacramento Headwaters(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 033N 006W 13 California

Commodities

Commodity Importance
Copper Tertiary
Gold Tertiary

Comments on the commodity information

  • GOSSAN CONTAINS APPRECIABLE AMOUNT OF GOLD - FROM TRACE TO .575 OZ/TON.

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore

Alteration

  • (Local) Pyritization

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -122.48888, 40.71513
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Steeply Dipping Shear Zones

Comments on the geologic information

  • GEOL.DESC: PROSPECT OCCURS NEAR GENTLY DIPPING GRADATIONAL CONTACT BETWEEN UPPER AND MIDDLE UNITS OF THE BALAKLALA RHYOLITE, UPPER-MOST MIDDLE UNIT IS COARSE VOLCANIC BRECCIA, THE LOWER PART IS RHYOLITE ALTERNATING WITH PYROCLASTIC ROCKS. UPPER UNIT IS POORLY BEDDED TUFF. FOLIATION IN BOTH UNITS, MOST PRONOUNCED IN MIDDLE UNIT, WHERE IT STRIKES NE AND DIPS STEEPLY. MOST ROCKS HEAVILY PYRITIZED.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name West Shasta Copper-Zinc

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 914.4M

Comments on the workings information

  • 10 ADITS - SOME EXPLORATORY DRILLING DONE ALONG RIDGE NW OF MINE, NO ORE FOUND. LACK OF STOPES INDICATE MINABLE ORE NOT FOUND.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOSSAN EXPOSED ON SURFACE 20 - 30 FT. THICK, EXPLORED BY ADITS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-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.

External references

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.