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Shasta Iron Company Group

Producer in Shasta county in California, United States with commodities Iron, Copper
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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. Ownership information
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10111070
MRDS ID W025229
Record type Site
Current site name Shasta Iron Company Group
Alternate or previous names Shasta Iron Mine and California Consolidated

Geographic coordinates

Geographic coordinates: -122.28303, 40.77735 (WGS84)
Elevation 472
Relative position 12 MILES NORTH OF REDDING, CLOSE TO U.S. HWY 99, BETWEEN THE PIT AND MCCLOUD RIVERS.

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

O'Brien(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

McCloud(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 004W 26 California

Comments on the location information

  • SINCE THE BUILDING OF THE SHASTA DAM, THESE DEPOSITS CAN ONLY BE REACHED BY BARGE OR BOAT: UTM ACCT LAND STATUS VALUE CALCULATED 7-94 USING GIS OVERLAY ANALYSIS WITH USFS LAND OWNERSHIP BOUNDARIES, 1:126,720 SCALE.

Commodities

Commodity Importance
Iron Primary
Copper Secondary

Comments on the commodity information

  • ORE CHIEFLY IS MAGNETITE, MUCH BEING LODESTONE, ABUNDANT HEMIATITE AND GEOTHITE AND SUBORDINATE SPECULARITE

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore
Anthophyllite Gangue
Antigorite Gangue
Pyrite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Mccloud Limestone
    Rock description Mccloud Limestone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -122.28303, 40.77735
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Steeply Dipping Joints, Shear Zones, Faults And Dikes Form Zones Of Dominantly Northeast, Northwest Structures.

Ore body information

  • General form DISCONTINUOUS AND IRREGULAR LENSES
    Thickness 6.1M
    Length 30.48M

Controls for ore emplacement

  • Fractures

Comments on the geologic information

  • QUARTZ DIORITE CONSISTS OF FINE-TO COARSE-GRAINED VARIETIES, NEAR THE CONTACT WITH THE QUARTZ DIORITE THE MCCLOUD LIMESTONE IS EXTENSIVELY METAMORPHOSED TO COARSELY-CRYSTALLINE NEARLY-WHITE MARBLE; OCCASIONAL CHERT LENSES AND NODULES HAVE BEEN RECRYSTALLIZED TO GRANULAR QUARTZ. DIKES OF FINE-GRAINED DIORITE, DIABASE, ANDESITE AND APLITE CUT THE OTHER ROCK TYPES. EVENDENCE OF FAULTING IS ABUNDANT IN THE SOUTHWESTERN MOST OF THE OPEN PITS.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant No
Discovery year 1892
Year of first production 1892

Mining district

District name East Shasta Copper-Zinc

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Shasta Iron Co., C/O Bunker Hill Iron Exploration
    Home office San Francisco, CA
  • Type Owner
    Owner Shasta Iron Co.

Comments on the production information

  • TWO HUNDRED TONS OF FE ORE MINED IN 1894 PROBABLY CAME FROM THIS PROPERTY

Reserves and resources

  • Type In-situ
    Estimate year 1948
    Total resources 84000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 62.99 wt-pct Iron Major 1948

Comments on the reserve resource information

  • AVERAGE IRON CONTENT OF 428 FT OF DRILL CORE WAS 37.82% WHICH IS CLOSE TO AVERAGE CONTENT OF ORE", 1,849,000 TONS AVERAGING 39.5% FE OR 4,680,000 TONS AVERAGING 37.82% FE.
  • IRONEX COMPANIES CORE-DRILLING PROGRAM BLOCKED OUT THE RESERVES, PRODUCTION WAS SCHEDULED AT A RATE OF 700,000 TONS ANNUALLY FOR FIRST 5 YEARS AND 500,000 TONS FOR THE NEXT 10 YEARS. NEW DISCOVERIES OF IRON ORE IN AUSTRALIA MADE THE IRONEX PROPOSAL ECONOMICALLY UNATTRACTIVE.

Comments on the workings information

  • NUMEROUS OPEN PITS

Reference information

Bibliographic references

  • Deposit

    LAMEY, C.A., 1948, SHASTA AND CALIFORNIA IRON-ORE DEPOSITS, SHASTA COUNTY, CA.; CALIFORNIA DIVISION OF MINES BULL. 129, P. 139-164

  • Deposit

    LYDON, P.A. AND O'BRIEN, J.C., 1974; MINES AND MINERAL RESOURCES SHASTA COUNTY; CALIFORNIA DIVISION MINES AND GEOLOGY COUNTY REPT. 6, P.63-68

  • Deposit

    1944 DIREXPL U.S. BUREAU MINES, 5 DIAMOND-DRILL HOLES TOTALING 2,900 FT.

  • Deposit

    1944 GEOLMAP

  • Deposit

    1944 GEOPHYS MAGNETIC ANOMALY MAP

  • Deposit

    1961 DIREXPL IRONEX COMPANY, DRILLED OVER 12,000 FT. OF CORE SAMPLES.

  • Production

    LYDON AND O'BRIEN, 1974

  • Reserve-Resource

    LAMEY, 1948

General comments

Subject category Comment text
Deposit SHASTA IRON COMPANY OWNS 178 ACRES OF PATENTED LAND AND SIX UNPATENTED. CALIFORNIA CONSOLIDATED OWNS 88.6 ACRES OF PATENTED LAND ADJOING AND WEST OF THE SHASTA IRON COMPANY.
Deposit IRREGULAR LENSES OF MASNETITE INTERCALATED BETWEEN SKARN AND IN SOME PLACES INTIMATELY MIXED WITH IT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 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.