Mc Knight Pit

Past Producer in Montgomery county in Arkansas, United States with commodity Barium-Barite

Geologic information

Identification information

Deposit ID 10284442
MAS/MILS ID 0050970011
Record type Site
Current site name Mc Knight Pit
Alternate or previous names McKnight Pit, Sulphur Mountain Deposit

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -93.8124, 34.37012 (WGS84)
Elevation 400
Location accuracy 1000(meters)
(click for info)

Geographic areas

Country State County
United States Arkansas Montgomery

Public Land Survey System information

Meridian Township Range Section Fraction State
5th Principal 004 S 026 W 29 SWNWNW Arkansas

Comments on the location information

  • 31,000N REPRESENTS THE COORDINATES OF THE FANCY HILL BARITE DEPOSIT MILL (MAS SEQ. # 0050970021).

Commodities

Commodity Importance
Barium-Barite Primary

Materials information

Materials Type of material
Barite Unknown
Calcite Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -93.8124, 34.37012

Ore body information

  • Thickness 12M
    Depth to top 96M
    Width 171M
    Length 168M
    Area 60HA
    Field Value
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 IRREGULAR
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 60
    Date of Last Modification 830216

Comments on the geologic information

  • CHERT REFERRED TO IN RECORD 2/LINE 01 IS DESCRIBED AS A CRYPTOCRYSTALLINE, DENSE, SILICEOUS MATERIAL.

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Non-metallic
Significant Yes
Discovery year 1945
Year of first production 1978
Milling method Flotation

Mining district

District name Fancy Hill

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Mixed

Ownership information

  • Type Owner
    Owner N. L. Industries, Inc. (Baroid Div.)
    ID 301409
    Interest 100
    Home office New York
    Year 1982

Comments on the ownership information

  • LAND IS HELD IN THE FORM OF PATENTED CLAIMS WITHIN THE OUACHITA NATIONAL FOREST.
  • DEPOSIT EVALUATED AT EFOC. MIXED DOMAIN CONSISTS OF PRIVATE LAND AND NATIONAL FOREST.

Production statistics

  • Year 1978
    Description Barite Ore 43999 Mt Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 43,999mt
  • Year 1979
    Description Barite Ore 43999 Mt Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 43,999mt
  • Year 1980
    Description Barite Ore 34925 Mt Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 34,925mt
  • Year 1981
    Description Barite Ore Mt Ore/Year
  • Year 1982
    Description Barite Ore Mt Ore/Year

Comments on the production information

  • N.L. INDUSTRIES (BAROID DIV.) CEASED OPERATIONS AT MCKNIGHT PIT IN JUNE, 1982. 1979-1980 ORE PRODUCTION STATISTICS WERE OBTAINED FROM THE BUMINES PRODUCTION STATISTICS.

Comments on the reserve resource information

  • OPERATION COMBINED WITH FANCY HILL. NO RECENT PRODUCTION.

Workings at the site

  • Type of workings Surface
    Area 12HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .75
    Percent Waste Rock 90
    Avg. Overburden Thickness 96
    Primary Material Cover HARD ROCKS
    Hardness of Ore HARD ROCKS
    Max. Pit Slope (degrees) 50
    Capacity 1570
    Capacity Units MT ORE/DAY
    Unit Production Cost 22.26
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1982

Comments on the workings information

  • TOTAL PROPOSED LAND HOLDING IS 81 HECTARES. AREA DISTURBED IS ESTIMATED, BASED ON ASSUMED PIT AND WASTE AREA DIMENSIONS.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0050970011
Mine Safety and Health Administration MSHA MSHA 0301409

Bibliographic references

  • Deposit

    BROBST, D.A. BARIUM MINERALS. CH. IN INDUSTRIAL MINERALS

  • Deposit

    AND ROCKS. ED. BY STANLEY J. LEFOND. AIME, NEW YORK,

  • Deposit

    4TH ED., 1975, PP. 427-441.

  • Deposit

    JONES, T.A. BARITE DEPOSITS IN THE OUACHITA MOUNTAINS,

  • Deposit

    MONTGOMERY, POLK, AND PIKE COUNTIES, ARKANSAS.

  • Deposit

    BUMINES RI 4348, 1948, 15 PP.

  • Deposit

    MCELWAINE, R.B. EXPLORATION OF THE BARITE DEPOSITS IN

  • Deposit

    MONTGOMERY COUNTY, ARKANSAS. BUMINES RI 3971, 1946,

  • Deposit

    24 PP.

  • Deposit

    SCULL, B.J. ORIGIN AND OCCURRENCE OF BARITE IN ARKANSAS.

  • Deposit

    ARK. GEOL. AND CONSERV. COMM. IC 18, 1958, 101 PP.

  • Deposit

    STROUD, R.B., ET AL. MINERAL RESOURCES AND INDUSTRIES OF

  • Deposit

    ARKANSAS. BUMINES BULL. 645, 1969, 418 PP.

  • Deposit

    U.S. ENVIRONMENTAL PROTECTION AGENCY AND U.S. GEOLOGICAL

  • Deposit

    SURVEY. FINAL ENVIRONMENTAL IMPACT STATEMENT: FANCY

  • Deposit

    HILL (MILCHEM) BARITE MINE AND PROCESSING PLANT,

  • Deposit

    MONTGOMERY COUNTY ARKANSAS. JUNE 1980, 319 PP.

General comments

Subject category Comment text
Deposit INTENSE FOLDING AND FAULTING HAS RESULTED IN A HIGHLY IRREGULAR ORE BODY. AVERAGE LENGTH OF THE MINERALIZED ZONE (168 METERS) IS MEASURED ALONG THE STRIKE OF THE ORE BODY. AVERAGE WIDTH OF THE ORE ZONE (171 METERS) IS MEASURED ALONG THE DIP PLANE OF THE ORE BODY. THE MINIMUM DEPTH TO THE MINERALIZED ZONE IS THE FLOOR OF THE EXISTING PIT (A DEPTH OF 30 METERS FROM THE ORIGINAL LAND SURFACE). TOTAL ESTIMATED DEPTH TO THE ORE BODY IS ESTIMATED TO BE 191 METERS FROM THE SURFACE. GENERAL STRIKE AND DIP OF THE ORE ZONE IS WEST-NORTHWEST DIPPING 50 DEGREES SOUTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 06-SEP-1994 J J G U.S. Bureau of Mines