Lower Cave Crk Manganese Limestone

Prospect in Independence county in Arkansas, United States with commodities Manganese, Phosphorus-Phosphates

Geologic information

Identification information

Deposit ID 10114413
MAS/MILS ID 0050630256
Record type Site
Current site name Lower Cave Crk Manganese Limestone

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -91.62704, 35.8368 (WGS84)
Elevation 152
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State County
United States Arkansas Independence

Public Land Survey System information

Meridian Township Range Section Fraction State
5th Principal 014 N 006 W 21 SE Arkansas

Commodities

Commodity Importance
Manganese Primary
Phosphorus-Phosphates Tertiary

Materials information

Materials Type of material
Apatite Unknown
Barite Unknown
Braunite Unknown
Hausmannite Unknown
Manganite Unknown
Psilomelane Unknown
Pyrolusite Unknown
Rhodochrosite Unknown
Wad Unknown

Nearby scientific data

Ore Body (1) -91.62704, 35.8368

Ore body information

  • Thickness 15M
    Depth to top 40M
    Width 1000M
    Length 2000M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 OTHER
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 40
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 790626

Comments on the geologic information

  • GEOLOGY THE BATESVILLE DISTRICT IS ON THE SOUTHERN EDGE OF THE OZARK PLATEAU, AND IS UNDERLAIN BY SEDIMENTARY SANDSTONES, SHALES, LIMESTONES, AND CHERTS OF ORDOVICIAN, SILURIAN, DEVONIAN, AND CARBONIFEROUS AGE THAT HAVE UNDERGONE LITTLE DEFORMATION. THE ROCKS IN THE DISTRICT DIP SLIGHTLY TO THE SOUTH, DUE TO THE GENERAL DOMING OF THE ROOMS IN THE OZARK PLATEAU. THE GENERAL TREND IS OBSCURED LOCALLY BY MINOR FOLDS AND NORMAL FAULT DISPLACEMENTS; THE SYNCLINAL FEATURES, BASIN AREAS. THE FOLDS ARE ALIGNED NORTHEAST, AND THE SERIES OF NORMAL FAULTS TRENDS EAST-WEST. MANGANESE DEPOSITS ARE CONCENTRATED IN STRUCTURAL LOWS, WHILE STRUCTURAL HIGHS ARE NEARLY BARREN. LITHOLOGY THE BOONE CHERT FORMATION CAPS MOST OF THE HILLS IN THE DISTRICT. THE MAJOR DEPOSITS OCCUR IN THE FERNVALE LIMESTONE AND IN THE CASON SHALE WHICH REST UNCOMFORTABLY ABOVE IT. THE BOONE FORMATION OFTEN RESTS DIRECTLY ON THE CASON SHALE, OR ON THE FERNVALE LIMESTONE WHERE THE SHALE IS ABSENT. THE FERNVALE LIMESTONE IS A COARSE-GRAINED MASSIVE, CROSS-BEDDED, DARK GRAY OR PINKISH GRAY LIMESTONE WHICH IS FRIABLE IN EXPOSED LEDGES. THE LIMESTONE REACHES A MAXIMUM THICKNESS OF 125 FT(38M) AT THE WESTERN BOUNDARY OF THE MANGANESE DISTRICT AND THINS OUT EASTWARD. THE AVERAGE THICKNESS OF THE FERNVALE IS 100 FT (30M). MANGANESE AND IRON OXIDES AND CARBONATES OCCUR FAIRLY UNIFORM IN THE UPPER 10-50 FT (3-15M) OF THE LIMESTONE, AND ARE CONCENTRATED IN ITS RESIDUAL DAYS. THE CASON SHALE IS A LENTICULAR, PHOSPHATE, GREENISH- GRAY SHALE WHICH AVERAGES ABOUT 5 FT(1.5M) THICK. THE COM- POSITION OF THE SHALE VARIES GREATLY, BUT IN SOME LOCALITIES IT CONTAINS VERY HIGH GRADE MANGANESE.THIS SHALE CONTAINS A LAYER, GENERALLY A FEW FEET THICK, OF YELLOWISH SANDSTONE WHICH OUTCROPS AS LEDGES. THESE LEDGES ARE USED AS MARKERS BY PROSPECTORS, AS MANGANESE ORES ARE COMMONLY FOUND BELOW THEM.
  • MINERALS PRIMARY MANGANESE MINERALIZATION IS BELIEVED TO HAVE BEEN DEPOSITED AS CARBONATES AND OXIDES OF MANGANESE IN THE BATESVILLE DISTRICT BY CIRCULATING HYPOGENE SOLUTIONS IN TOP HEADS OF THE FERNVALE AND CASON SHALE. THE PRIMARY MINERALS INCLUDE HAUSMANITE, BRAUNITE, RHODOCHROSITE AND OTHER CARBONITES FOUND DISSEMINATED IN UNALTERED OR SLIGHTY ALTERED REPLACEMENT DEPOSITS. THE MANGANESE MIN- ERALIZATION IS MOST HEAVILY CONCENTRATED IN THE CASON SHALE AND IN THE UPPER 10-50 FT(3-15M) OF THE FERNVALE LIMESTONE.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Both metallic and non-metallic
Significant No
Discovery year 1915

Comments on exploration

  • EXPLORATION ALL MANGANESE PRODUCTION CAME FROM AREAS WHERE THE MANGANESE CONCENTRATIONS IN ERODED SYNCLINAL TROUGHS WHERE THE BOONE CHERT HAD BEEN WEAKENED AND BROKEN BY WEATHERING AND FOLDING, AND THE UNDERLYING MANGANIFEROUS FERNVALE AND CASON FORMATIONS HAD BEEN EXPOSED. RAY STROUD (SEE BIBLIO GRAPHY), USBM ARKANSAS STATE LIAISON OFFICER, BELIEVES THA THERE ARE OTHER ENRICHED OR CONCENTRATED MANGANESE DEPOSITS IN SYNCLINAL TROUGHS OVERLAIN BY THE BOONE CHERT. TAILED GEOLOGICAL MAPPING IN THE DIST. FOR THESE TROUGHS COULD LOCATE DRILLING TARGETS FOR THESE INFERRED ENRICH- ED MANGANESE DEPOSITS. ALSO A MAGNETOMETER MAY BE A USEFU TOOL TO LOCATE FERRUGINOUS MANGANESE DEPOSITS OVERLAIN BY THE BOONE CHERT.

Mining district

District name Batesville

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Private

Production statistics

  • Year 1953
    Description 261000 Mtons 10-35% Ore From District 261000 Total Prod. 1904-1959
  • Year 1959
    Description 344000 Mtons +35%Mn Ore From District 344000 Total Prod. 1849-1959
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Manganese Manganese 35wt-pct

Comments on the production information

  • PRODUCTION HISTORY ACCOUNTING FOR MUCH OF THE ORE PRODUCED IN THE DISTRICT ARE DEPOSITS IN RESIDUAL CLAYS AND TALUS, RESULTING FROM EROSION OF SECONDARY OXIDE DEPOSITS IN AREAS WHERE BOONE CHERT AND OTHER CAP ROCKS HAVE BEEN REMOVED, RESULT- IN IN VERTICAL SLUMPAGE AND DOWNSLOPE CREEP OF THE DEPO- SITS.

Comments on the reserve resource information

  • QUANTITY-GRADE RESOURCE ESTIMATES FOR THE BATESVILLE MAGANIFEROUS CARBONATE (MANGANESE CARBONATE) DEPOSITS HAVE BEEN COMBINED. INFERRED RESERVES WERE ESTIMATED BY STROUD (BU MINES RI 6478, P.23) IN 1963. ESTIMATES OF MANGANIFEROUS LIMESTONE TONNAGES AND GRADES WERE BASED ON THE LENGTH AND THICKNESS OF OURCROPS DRILL HOLE INTERSECTIONS, AND THE MANGANESE CONTENT OF SAMPLES. IN DETERMINING THE SIZE OF AREAS BELIEVED TO BE UNDERLAIN BY MANGANIFEROUS LIMESTONE, EXPOSURES WERE ASSUMED TO INFLUENCE WIDTHS EQUAL TO 1/2 THEIR OBSERVABLE LENGTHS. EXCEPT IN INSTANCES WHERE PLANE TABLE MAPPING AND DRILL HOLE PERMITTED THE USE OF MORE EXACT INFORMATION. REVISION IN ESTIMATIONS WERE MADE FOR AREAS WHERE BARREN ZONES WERE FOUND BY POST-1956 CHURN AND CORE DRILLING. AVERAGE MEASURED THICKNESSES WERE USED TO CALCULATE VOLUME. A FACTOR OF 14 AV. FT. PER LONG DRY TON (0.358 M E /DRY MTON), WAS USED IN CALCULATING TONNAGES. THE INFERRED RESOURCES WERE BASED UPON DATA GATHERED IN THE FIELD ON MORE THAN 580 SEPARATE TRAITS USING MANGANESE CUT-OFF GRADES OF 2%. THERE IS A MAP OF ALL KNOWN OCCURANCES OF THE BATES- VILLE DISTRICT MANGAFEROUS LIMESTONE DEPOSITS THAT ALSO INCLUDE MAGANESE OXIDE OCCURANCES ON FILE AT THE BU MINES IFOC HEADQUARTERS FILE SEQUENCE NUMBER 0050630256. THE PHOSPHATE CONTAINED IN THE MANGANESE ORE IS DELETERIOUS.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0050630256

Bibliographic references

  • Geology

    MISER,H.D. DEPOSITS OF MANGANESE ORE IN THE BATESVILLE

  • Geology

    DISTRICT ARKANSAS USGS BULL 734, 1924, 273 PP.73 PP.

  • Geology

    MISER, H.D. MANGANESE CARBONATE IN THE BATESVILLE DISTRICT

  • Geology

    , ARKANSAS. USGS BULL 921-A, 1941, 96 PP.

  • Reserve-Resource

    STROUD, R.B. MANGANESE RESOURCES OF THE BATESVILLE DIST-

  • Reserve-Resource

    RICT ARKANSAS. 3. FIELD INVESTIGATIONS: JULY 1956 TO

  • Reserve-Resource

    JUNE 1961. BU MINES R I 6478, 1964,50 PP.

  • Deposit

    STRACZEK, J. A. & M. MC KINNEY. GEOLOGICAL MAP OF THE

  • Deposit

    KLINE, H.D. & W.F. BROWN. MANGANESE RESOURCES OF THE

  • Deposit

    INDEPENDENCE AND 1 ZARD COUNTIES, ARKANSAS. MINERAL IN-

  • Deposit

    BATESVILLE DISTRICT, ARKANSAS, PT 2 OF 3 PTS, BU MINES

  • Deposit

    R I 5411, 1958, 45 PP.

  • Deposit

    KLINE, H.D. & J,P. RYAN. MANGANESE RESOURCES OF THE

  • Deposit

    BATESVILLE DISTRICT, ARK,: INTERIM REPORT 1, BU MINES

  • Deposit

    R I 5206, 1956, 33 PP.

  • Deposit

    RUTLEDGE, F A, W.A. TESSMER, & J.E. BELL. INVESTIGATION OF

  • Deposit

    MANGANESE CARBONATE AND WAD DEPOSITS IN THE BATESVILLE

  • Deposit

    MANGANESE DISTRICT, ARKANSAS. BU MINES R I 48 59, 1952

  • Deposit

    15 PP.

  • Deposit

    STRACZEK, J. A. & D. M. MC KINNEY. GEOLOGICAL MAP OF THE

  • Deposit

    CENTRAL PART OF THE BATESVILLE MANGANESE DISTRICT,

  • Deposit

    INDEPENDENCE AND IZARD COUNTIES, ARKANSAS. MINERAL IN-

  • Deposit

    VESTIGATIONS MAP 1. 1950.

General comments

Subject category Comment text
Deposit THIS DATA FILE CONTAINS INFORMATION PERTAINING TO THE MAGANIFEROUS CARBONATE DEPOSITS FOR THE FOLLOWING DEPOSITS: NAME FILE SEQUENCE NUMBER LOWER CAVE CRK MANGANESE LIMESTONE PROSPECT 0050630256 UPPER CAVE CRK MANGANESE LIMESTONE PROSPECT 0050630257 RUTHERFORD HOLLOW MN LIMESTONE PROSPECT 0050630258 MULLIGAN HOLLOW MANGANESE LIMESTONE PROSPECT 0050630259 CLUBHOUSE MANGANIFEROUS CARBONATE PROSPECT 0050630260 BLOWING CAVE CREEK MN LIMESTONE PROSPECT 0050630261 LAFFERTY CREEK MANGANESE LIMESTONE PROSPECT 0050630262

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Hite, Alan G. U.S. Bureau of Mines