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Bully Hill

Producer in Shasta county in California, United States with commodities Copper, Silver, Gold, Zinc
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10111069
MRDS ID W025217
Record type Site
Current site name Bully Hill
Alternate or previous names Shasta Zinc and Copper, Delamar
Related records 10262643

Geographic coordinates

Geographic coordinates: -122.20387, 40.79902 (WGS84)
Elevation 396
Relative position SQUAW CREEK ARM OF SHASTA LAKE

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 15,16,21,22,28 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Zinc Critical Secondary

Comments on the commodity information

  • ORE CONSISTS OF MIXTURE OF DENSE, FINE - GRAINED HYPOGENE SULFIDES, SECONDARY MINERALS INCLUDE NATIVE COPPER, BORNITE, CHALCOCITE, COVELLITE, CUPRITE, MALACHITE, AZURITE AND LIMONITE.

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Anhydrite Gangue
Barite Gangue
Gypsum Gangue

Alteration

  • (Local) Silicification, Sulfatization Albitization, Chloritization, Hydrous Mica Alteration And Pyritization.

Mineral occurrence model information

Model code 187
USGS model code 28a.1
Deposit model name Massive sulfide, Sierran kuroko
Mark3 model number 44

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

Nearby scientific data

(1) -122.20387, 40.79902
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults, Folds, Shear Zones

Ore body information

  • General form LENTICULAR
    Strike NE
    Dip STEEP
    Thickness 12.19M
    Length 91.44M
    Width 91.44M

Controls for ore emplacement

  • Ore Bodies Occur In And Near The Prominent Northward - Striking Bully Hill Shear Zone.

Comments on the geologic information

  • GEOL.DESC: TUFFS AND MUDSTONES OF THE PIT FORMATION OCCUPY THE EAST SIDE OF BULLY HILL TO AN ALTITUDE OF 1,700 FT., VOLCANIC FLOW AND PYROCLASTIC ROCKS OF THE BULLY HILL RHYOLITE UNDERLIE THE REST OF THE HILL. THE BULLY HILL RHYOLITE FORMS THE CORE OF A SOUTHWARD - PLUNGING ANTICLINE. THE ORE BODIES ARE FOUND IN THE EAST LIMB OF THE STEEPLY DIPPING, PARTLY OVERTURNED ANTICLINE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant Yes
Production years 1902 - 1910 , 1915 - 1918 , 1920 - 1922 , 1924 - 1927

Mining district

District name East Shasta Copper - Zinc

Land status

Ownership category National Forest

Comments on the production information

  • ASSAYS OF ABOUT 9,000 TONS OF ORE IN 1922 AVERAGED ZN 22.9 %, CU $2.42 /TON SILVER 1.19 OZ/TON, GOLD $.033 /TON. CUMULATIVE PRODUCTION TABLE ARE VALUES FROM BULLY HILL AND RISING STAR MINE COMBINED.

Workings at the site

  • Type of workings Underground
    Area 182.115HA
    Length 457.2M
    Overall depth 335.28M

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ORE REPLACED METACLACITE ENGULFED IN THE METADIABASE.

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.

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.