Monument No. 2 Mine

Past Producer in Apache county in Arizona, United States with commodities Vanadium, Uranium, Iron, Copper, Lead, 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. 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. Production statistics
  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 10027378
MRDS ID M002989
Record type Site
Current site name Monument No. 2 Mine
Alternate or previous names South Extension Mine

Geographic coordinates

Geographic coordinates: -109.88876, 36.9264 (WGS84)
Elevation 1585
Relative position 6.4 MI NW OF DINNEHOTSO, 4.5 MI S OF AZ-UT BORDER.

Site location context

Political divisions (FIPS codes)

Apache(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rooster Rock(quadrangle 1:24,000 scale)

Rock Point(quadrangle 1:100,000 scale)

Shiprock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Juan(hydrologic unit)

Lower San Juan(hydrologic accounting unit)

San Juan(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Apache

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 041N 023E 29,32 W OF CENTER (29); N OF CENTER (32) Arizona

Commodities

Commodity Importance
Vanadium Critical Primary
Uranium Primary
Iron Tertiary
Copper Tertiary
Lead Tertiary
Molybdenum Tertiary

Materials information

Materials Type of material
Carnotite Ore
Copper Ore
Iron Ore
Lead Ore
Tyuyamunite Ore
Uraninite Ore
Apatite Gangue
Calcite Gangue
Chalcedony Gangue
Gypsum Gangue
Ilsemannite Gangue
Jarosite Gangue
Limonite Gangue
Opal Gangue
Quartz Gangue
Wad Gangue

Analytical data

Result U:V RATIO = 1:5, LOW LIME

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Shinarump Conglomerate (Member Of Chinle Formation);De Chelly Sandstone
    Rock description Shinarump Conglomerate (Member Of Chinle Formation);De Chelly Sandstone
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate

Nearby scientific data

(1) -109.88876, 36.9264

Economic information

Geologic structures

Type of structure Local
Structure description On E Limb Of Monument Upwarp, In En Echelon Strike Slip Vertical Faults Along Channel

Ore body information

  • General form IRREGULAR MASSES, LENSES, RODS, ROLLS
    Thickness 15.24M
    Length 3218.6M
    Width 213.36M

Controls for ore emplacement

  • Mineralization In Bands Filling Interstices In Sandstone, Coating Pebbles And Fractures; In Bottom Of Most Paleostream Channels--Commonly With Carbonaceous Debris

Economic information about the deposit and operations

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

Production statistics

  • Year 1967
    Period 1942-1967
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^0.3 And 0.24% U
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Uranium Uranium 0wt-pct

Comments on the production information

  • MOST PRODUCTIVE U-V MINE IN AZ.

Comments on the reserve resource information

  • DEPOSIT REPORTED ESSENTIALLY MINED OUT AND VERY LIMITED RESOURCES REMAIN ALONG EDGES OF MINERALIZATION.

Workings at the site

  • Type of workings Surface/Underground
    Area 1.84HA
    Length 213.36M
    Overall length 213.36M
    Overall width 91.44M

Comments on the workings information

  • WORKINGS INCLUDE OPEN PIT, INCLINED SHAFTS, AND ADITS. CONCENTRATOR OPERATED TO UPGRADE LOW GRADE MINERALIZATION.

Comments on development

  • OPERATIONS CLOSED DOWN IN 1967 AND EQUIPMENT REMOVED.

Reference information

Bibliographic references

  • Deposit

    KEITH, 1970, ABM BULL 182, P. 103-159, 202-289.

  • Deposit

    WITKIND & THADEN, 1963, USGS BULL 1103.

  • Deposit

    BAIN, 1952, USAEC RMO 982.

  • Deposit

    FINNELL, 1957, ECON GEOL, V. 52, NO. 5, P. 586-589.

  • Deposit

    PEIRCE, W.H., 1970, COAL, OIL, NATURAL GAS, HELIUM, AND URANIUM IN ARIZONA, ARIZONA BUREAU OF MINES BULLETIN 182, P. 235-248.

  • Deposit

    JOHNSON, H.S., 1966, URANIUM DEPOSITS OF THE MOAB, MONTICELLO, WHITE CANYON AND MONUMENT VALLEY DISTRICTS, UTAH AND ARIZONA, U.S.G.S. BULLETIN 1222-H, 53 P.

  • Deposit

    CHENOWETH, W.L., 1973, URANIUM DEPOSITS OF NORTHWESTERN ARIZONA: NEW MEXICO GEOL. SOC. 24TH GUIDEBOOK, P. 139.

  • Deposit

    USGS PP 1200-AZ.

  • Other Database

    CIMRI

  • Production

    KEITH, 1970, P. 214.

General comments

Subject category Comment text
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M002989 WITH RECORD M030423 OF JAN WILT IN MOLYBDENUM FILE; CONTACT PERSON T.G. THEODORE, USGS. THIS RECORD ALSO CONTAINS DATA FROM DUPLICATE RECORDS M003232 OF BRIGHT AND CREASEY AND D000309 OF R.U. KING WHICH HAVE BEEN DELETED FROM MAIN MRDS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit ORE PODS ARE LENTICULAR. HIGHEST CONCENTRATIONS ARE WITHIN 5 FT OF BASE OF CHANNEL. LOWER GRADES TO 20 FT ABOVE BASE. CHANNEL IS 2 MI LONG, 3 MI WIDE, 50 FT DEEP. DIMENSIONS GIVEN ARE FOR MINERALIZED AREA. MINERALIZATION EXTENDS 7 FT INTO THE DECHELLY SANDSTONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1983 Peterson, Jocelyn A. U.S. Geological Survey

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.