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Buckley Field Manganese Deposits

Occurrence in Arapahoe county in Colorado, United States with commodity Manganese
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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. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10013251
MRDS ID D009444
Record type Site
Current site name Buckley Field Manganese Deposits
Related records 10117446, 10165667

Geographic coordinates

Geographic coordinates: -104.54778, 39.62306 (WGS84)
Elevation 1768
Location accuracy 10000(meters)
Relative position 25 MILES SE OF DENVER, Within 5-Mile Radius

Site location context

Political divisions (FIPS codes)

Arapahoe(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Watkins SE(quadrangle 1:24,000 scale)

Denver East(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle South Platte-Cherry Creek(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Colorado Arapahoe

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 005S 064W Colorado

Comments on the location information

  • LOCATION WITHIN BOBING RANGE UNCERTAIN. LAT-LONG GIVEN IS APPROX. CENTER OF BOMBING RANGE ; INFO FROM LAND.ST :(1974)

Commodities

Commodity Importance
Manganese Critical Tertiary

Comments on the commodity information

  • OTHER UNSPECIFIED MN OXIDES PRESENT IN SMALL AMOUNTS

Materials information

Materials Type of material
Psilomelane Ore
Barite Gangue
Limonite Gangue

Analytical data

Result BUCKLEY NO. 1 SAMPLE ASSAYED 12.2 % MN, 68.3 % INSOL, 55.0 % SIO2, 0.9 % FE, 1.5 % CAO, LT 0.05 % S, 3.2 % BA, 7.8 % AL203, 0.25 % ZN, 0.05 % P.
Result BUCKLEY NO. 2 SAMPLES ASSAYED 10.5 % MN, 73.8 % INSOL, 59.2 % SIO2, 1.5 % FE, 0.6 % CAO, LT 0.05 % S, 3.3 % BA, 7.0 % AL203, 0.20 % ZN, 0.03 % P.
Result COMPOSITE OF BUCKLEY NOS. 1 AND 2 AND ONE FROM LEONARD MINE (DOUGLAS CO.) ASSAYED 11.1 % MN, 71.4 % INSOL, 56.7 % SIO2, 1.2 % FE, 1.3 % CAO, LT 0.05 % S, 3.0 % BA, 8.0 % AL203, 0.23 % ZN, 0.03 % P.
Result SIZING OF CRUSHED COMPOSITE SAMPLE GAVE MN DISTRIBUTION OF 77.7 % IN PLUS 10-MESH AND 22.3 % IN MINUS 10-MESH.
Result COMPOSITE SAMPLE CRUSHED TO MINUS 10-MESH, STAGE-GROUND THRU 48-MESH, SIZED AND TABLED GAVE MN DISTRIBUTION OF 57.2 % IN FIRST CONCENTRATE (14.0 WT % ASSAYING 42.8 % MN AND 7.6 % SIO2), 15.7 % IN SECOND CONCENTRATE (4.1 WT % ASSAYING 40.1 % MN AND 10.2 % SIO2), 9.9 % IN MIDDLING (6.9 WT % ASSAYING 15.0 % MN AND 53.3 % SIO2), 4.9 % IN SLIMES (7.4 WT % ASSAYING 7.0 % MN AND 50.2 % SIO2), 12.3 % IN TAILING (67.6 WT % ASSAYING 1.9 % MN AND 73.0 % SIO2).
Result SINTERING TEST YIELDED 48.4 % MN, 1.9 % FE, 9.2 % SIO2, 3.4 % AL203, 1.2 % CAO, 0.1 % ZN, 0.056 % P, 11.0 % BA.
Result STAGE CRUSHING TEST ON 0

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Dawson Formation;Denver Formation
    Rock description Dawson Formation;Denver Formation
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate

Nearby scientific data

(1) -104.54778, 39.62306
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Denver Basin
Type of structure Local
Structure description Denver Basin

Ore body information

  • General form IRREGULAR

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Watkins Area

Land status

Ownership category State

Comments on the workings information

  • TRAVER STATES THAT OF THE SIX DEPOSITS FOUND, TWO WERE EXPLORED BY 21 TEST PITS 4 TO 9 FT DEEP, 8 TRENCHES 10 TO 31 FT LONG, AND 116 POST HOLES 0.5 TO 3.5 FT DEEP

Comments on development

  • ONE OF SEVERAL DENVER BASIN DEPOSITS INVESTIGATED BY USBM AND USGS FOR MN POTENTIAL AS RESULT OF STRATEGIC MINERALS ACT AND WW II NEEDS. NO COMMERCIAL QUANTITIES DISCLOSED AT THAT TIME

Reference information

Bibliographic references

  • Deposit

    WELLS, R.R., AND OTHERS, 1952, BENEFICIATION OF OXIDE MANGANESE ORES FROM ARAPAHOE, DOUGLAS, SAGUACHE, CUSTER, CHAFFEE, AND PARK COUNTIES, COLORADO: USBM RI-4845, P. 3-6

  • Deposit

    BRYANT, BRUCE, AND OTHERS, 1981, GEOLOGIC MAP OF THE DENVER 1X2 QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163

  • Deposit

    TRAVER, W.M., JR., 1947, INVESTIGATIONS OF STRATEGIC MINERAL RESOURCES, IN VANDERWILT, J.W., MINERAL RESOURCES OF COLORADO: COLORADO STATE MINERAL RESOURCES BOARD, P. 490-491.

General comments

Subject category Comment text
Deposit DENVER BASIN MN OCCURRENCES WERE CONSIDERED TOO LOW GRADE FOR COMMERCIAL MANUFACTURE OF FERROMANGANESE BUT USBM ORE-DRESSING TESTS INDICATED SOME DEGREE OF CONCENTRATION POSSIBLE BY SIZING METHODS AND BY SIMPLE TABLING AND SINTERING. FLOTATION INCREASED MN RECOVERY BUT LOWERED GRADE DUE TO EXCESS SILICA AND BARIUM ; INFO.SRC : 1 PUB LIT
Deposit MN OXIDES OCCUR AS IRREGULAR MASSES 20 TO 200 MESH IN SIZE FILLING INTERSTICES OF ARKOSIC SANDSTONE POSSIBLY IN DENVER FM BUT MORE LIKELY IN DAWSON FM

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-82 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Colorado resources

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