Ventura Mine Group

Past Producer in Santa Cruz county in Arizona, United States with commodities Copper, Silver, Gold, Lead, Zinc, Manganese, Molybdenum
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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Reserves and resources
  20. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10037098
MRDS ID M030395
Record type Site
Current site name Ventura Mine Group
Alternate or previous names Morris Group, Georgia Mines, George Morris Mine
Related records 10210665

Geographic coordinates

Geographic coordinates: -110.7654, 31.45764 (WGS84)
Relative position 13 MI NE OF NOGALES IN COX GULCH.

Site location context

Political divisions (FIPS codes)

Santa Cruz(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cumero Canyon(quadrangle 1:24,000 scale)

Nogales(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado 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 Arizona Santa Cruz

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 023S 015E 01 NE OF SW Arizona

Comments on the location information

  • 1 MI SSW OF EUROPEAN MINE. INFO FROM LAND.ST :1979

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Primary
Lead Secondary
Zinc Critical Tertiary
Manganese Critical Tertiary
Molybdenum Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Molybdenite Ore
Pyrite Ore
Sphalerite Ore
Tennantite Ore
Psilomelane Unknown

Alteration

  • (Local) Silicification, Oxidation, Sericite-Quartz-Tourmaline

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Comoro Canyon Granite
    Rock description Comoro Canyon Granite
    Stratigraphic age (youngest) Tertiary
    Stratigraphic age (oldest) Jurassic
    Chronological age 160
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
    Rock unit name Mt. Wrightson Formation
    Rock description Mt. Wrightson Formation

Nearby scientific data

(1) -110.7654, 31.45764

Economic information

Geologic structures

Type of structure Regional
Structure description Believed To Be Sw Extension Of Three R Mine Ne-Trending Fracture System
Type of structure Local
Structure description Breccia Pipe

Ore body information

  • General form LENSES, IRREGULAR
    Dip 70
    Plunge direction NE

Controls for ore emplacement

  • Breccia, Fissures And Joints

Comments on the geologic information

  • ORE IN QUARTZ-GOUGE VEINS IS ROUGHLY BANDED. GRANITE IS FOUND 0.25 MILE FROM DEPOSIT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1913
Year of last production 1950

Mining district

District name Palmetto District

Land status

Ownership category National Forest
Area name Coronado National Forest

Ownership information

  • Type Operator
    Owner Arizona Smelting And Refining Co.
    First year 1979
  • Type Owner
    Owner Noranda Mines, Ltd.
    First year 1979

Production statistics

  • Year 1950
    Period 1913-1950
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^Average 6% Cu, 16 Oz/T Ag, 1% Pb, 0.2 Oz/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Gold Gold 6g/mt
    Major Ore Lead Lead 1wt-pct
    Minor Ore Silver Silver 452g/mt
    Major Ore Copper Copper 6wt-pct

Comments on the production information

  • SPORADIC PRODUCTION IN 1913, 1933-1950

Reserves and resources

  • Type In-situ
    Estimate year 1966
    Total resources 1632000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.22 wt-pct Copper Major 1966
    Molybdenum MoS2 0.4 wt-pct Molybdenum Trace 1966

Comments on the reserve resource information

  • 1966 ISO MINES LTD ANNUAL REPORT SHOWED RESERVES OF BRECCIA PIPE IN VENTURA CANYON AT +1-3.6 MILLION TONS

Workings at the site

  • Type of workings Underground
    Length 1524M

Comments on the workings information

  • SERIES OF TUNNELS ON THE E SIDE OF THE MOUNTAIN, ONE ABOVE THE OTHER; EXTENSIVE DIAMOND DRILLING ON THE PROPERTY.

Comments on development

  • PREVIOUS OWNERS INCLUDE A.S. HENDERSON, VENTURA MINES, INC. RUPERT BYERLE, G.W. MORRIS; 130 CLAIMS (PRESUMED UNPATENTED) IN 1965.

Reference information

Bibliographic references

  • Deposit

    KEITH, 1975, ABM BULL 191.

  • Deposit

    SCHRADER, 1915, USGS BULL 582.

  • Deposit

    MOGER, 1969, MS THESIS, UNIV OF AZ.

  • Deposit

    ABGMT FILE DATA, STANTON B. KEITH.

  • Deposit

    ABGMT-USBM FILE DATA.

  • Deposit

    ADMR FILE DATA, VENTURA MINE.

  • Deposit

    USBM FILES VENTURA MINE GROUP.

  • Deposit

    ABGMT CLIPPINGS FILE, VENTURA MINES INC, MORRIS MINE, GEORGE MORRIS MINE.

  • Production

    KEITH, 1975

  • Reserve-Resource

    MOGER, 1969, P.3

General comments

Subject category Comment text
Deposit QUARTZ-GOUGE VEINS WITH UNKNOWN DIMENSIONS; LARGE ORE LENS ASSOCIATED WITH SHEAR ZONE IS 500 FT LONG, 30-200 FT WIDE, AND DIPS 70 DEGREES.
Deposit THIS REPORT WAS TAKEN FROM RECORD M030395 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS. DUPLICATE RECORD # D000346 BY ROBERT U. KING HAS BEEN INCORPORATED INTO THIS RECORD. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1983 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-MAY-1982 Calder, Susan R. Arizona Bureau of Geology and Mineral Technology

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.