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Midnight Owl Mine

Producer in Yavapai county in Arizona, United States with commodities Feldspar, Beryllium, Lithium, Niobium (Columbium), Tantalum, Phosphorus-Phosphates
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Geologic information

Identification information

Deposit ID 10027532
MRDS ID M003258
Record type Site
Current site name Midnight Owl Mine
Alternate or previous names Lithia King
Related records 10258983

Geographic coordinates

Geographic coordinates: -112.51407, 33.99839 (WGS84)
Elevation 1128
Relative position 13 MILES E OF WICKENBURG.
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Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 008N 002W 31 NW OF NW Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1964)

Commodities

Commodity Importance
Feldspar Primary
Beryllium Secondary
Lithium Secondary
Niobium (Columbium) Secondary
Tantalum Secondary
Phosphorus-Phosphates Tertiary

Materials information

Materials Type of material
Amblygonite Ore
Beryl Ore
Lepidolite Ore
Lithiophilite Ore
Spodumene Ore
Tourmaline Ore
Albite Gangue
Apatite Gangue
Bismutite Gangue
Cleavelandite Gangue
Muscovite Gangue
Purpurite Gangue
Quartz Gangue
Spessartite Gangue
Stewartite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -112.51407, 33.99839
ListMap

Geologic structures

Type of structure Local
Structure description Foliation Trends N 20 E, Dips Steep Yet Variable, Mostly Nw.

Ore body information

  • General form IRREGULAR, TABULAR
    Depth to top 0M
    Width 30.48M
    Length 106.68M

Controls for ore emplacement

  • Fracturing

Comments on the geologic information

  • THE GNEISS IS A QUARTZ-HORNBLENDE-MICA GNEISS.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Both metallic and non-metallic
Deposit size Small
Significant No

Mining district

District name White Picacho District

Land status

Ownership category Federal

Ownership information

  • Type Operator
    Owner Fansteel Corp. Chicago, Illinois
    First year 1986
  • Type Owner
    Owner Earl And Sidney Anderson
    First year 1958

Production statistics

  • Year 1952
    Period 1947 - 1952
    Material ORE-LI
    Accuracy Accurate
    Description Cp_Grade: ^7.4% Li2o, Amblygonite
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Li2O Ore Lithium Lithium 7wt-pct
  • Year 1952
    Period 1947 - 1952
    Material ORE-BE
    Accuracy Accurate
    Description Cp_Grade: ^11.5% Beo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    BeO Beryllium Beryllium 12wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1952
    Commodity Subtype Grade units Group Importance Year
    Lithium Li 8 wt-pct Lithium Minor 1952

Comments on the reserve resource information

  • RESERVES ESTIMATE DOWN TO 30 FOOT DEPTH, RESERVES ARE EXPECTED TO BE MUCH LARGER.

Comments on the workings information

  • WORKING LIMITED MOSTLY TO TWO LARGE BULGES IN PEGMATITE DIKE; WORKING IS BY OPEN CUT, THE WESTERN OR "UPPER" CUT IS 40 FT BY 50 FT BY 25 FT DEEP

Comments on development

  • DURING 1984-1986, FANSTEEL SAMPLED PEGMATITES AND CARRIED OUT SURFACE DRILLING PROGRAM AND PILOT GRAVITY TEST OF BULK SAMPLE FOR TANTALUM RECOVERY.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M003258
U.S. Bureau of Mines Minerals Availability System MAS 0040251405

Bibliographic references

  • Deposit

    JAHNS, R.H., 1952, PEGMATITE DEPOSITS OF THE WHITE PICACHO DISTRICT, MARICOPA AND YAVAPAI COUNTIES, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 162.

  • Deposit

    ARIZ BUREAU OF MINES BULL 180, P. 98

  • Deposit

    PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.

  • Deposit

    NIEMUTH, N.J., 1987, ARIZONA MINERAL DEVELOPMENT 1984-1986: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES DIRECTORY 29, 46 P.

  • Deposit

    SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATES BUREAU OF MINES SPECIAL PUBLICATION, 334 P.

  • Other Database

    CIMRI

  • Production

    ABM BULLETIN 162 .

General comments

Subject category Comment text
Deposit BE, LI, NB, TA OCCURS IN THE INTERMEDIATE ZONES AT THE EASTERN PORTION OF THE DEPOSIT. FELDSPARS OCCUR THROUGHOUT THE ENTIRE DEPOSIT AND OVER ALL GRADES.THE MAIN PEGMATITE COMPRISES FIVE WELL DEFINED ZONES. (1) A DISCONTINUOUS OUTER SELVAGE OF QUARTZ, ALBITE, MUSCOVITE, AND SCHORL, ALSO MICA. (2) THE WALL ZONE ( 2 TO 55 FEET THICK ) OF PERTHITE, QUARTZ, ALBITE, AND MUSCOVITE IS MOSTLY COARSE GRAINED. (3) THE OUTER INTERMEDIATE ZONE IS COARSE GRAINED BLOCKY PERTHITE. TOURMALINE IS LOCALLY ABUNDANT. (4) THE INNER INTERMEDIATE ZONE HAS VERY COARSE PERTHITE AND MASSES OF QUARTZ. (5) THE CORE IS ARBITRARILY DESIGNATED AS HIGHER GRADE FELDSPAR THAN THE PREVIOUS ZONE. STRIKE OF MAIN BODY IS E, WITH BRANCHES TO THE NE, E, AND SE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-JAN-1982 Roth, Frances A. (Dewitt, Ed) Arizona Bureau of Geology and Mineral Technology
Updater 01-FEB-1993 Orris, Greta J. U.S. Geological Survey