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  3. Mineral Resource Data System (MRDS)

Llave

Producer in Santiago De Cuba, Cuba 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. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10061270
MRDS ID TC34130
Record type Site
Current site name Llave

Geographic coordinates

Geographic coordinates: -75.9097, 20.32198 (WGS84)
Location accuracy 10000(meters)
Relative position 2 KM SSE OF PALMARITO, 1.5 KM S OF MANGAWESO STATION

Site location context

Political divisions (FIPS codes)

Santiago De Cuba(province)

Cuba(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Cuba Santiago De Cuba

Comments on the location information

  • LOCATION FROM SANTOS ET AL (1988); WAS IN OLD PROVINCE OF ORIENTE

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore

Mineral occurrence model information

Model code 99
USGS model code 24c.2
Deposit model name Volcanogenic Mn, Cuban

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name El Cobre Group
    Rock description El Cobre Group
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -75.9097, 20.32198
ListMap

Economic information

Ore body information

  • Strike N
    Dip 15-20W
    Thickness 1.3M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No
Year of first production 1914

Mining district

District name Palmarito District

Production statistics

  • Year 1945
    Period 1942-1945
    Material ORE
    Description Cp_Grade: ^50%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Manganese Manganese 50wt-pct

Comments on the production information

  • ORE WAS SHIPPED FROM ALL THE CLAIMS, CRUDE ORE 20-30% MN BEFORE SCREENING, WASHING, AND JIGGING.
  • WORKED INTERMITTENTLY SINCE 1914, PRODUCTION PRIOR TO 1941 UNKNOWN; PRODUCTION MAINLY FROM RESIDUAL ORES.

Comments on the reserve resource information

  • RESERVES OF RESIDUAL ORES SEVERAL THOUSAND TONS (1944); FEW THOUSAND TONS OF BEDDED ORE 15-20% MN
  • 1946 ESTIMATE: FEW 10'S OF THOUSANDS OF TONS INDICATED RESERVE AND SEVERAL 100 THOUSANDS OF TONS INFERRED RESERVES.
  • PROD + RESERVES ESTIMATED AT 460,248 METRIC TONS.

Comments on the workings information

  • ADITS, INCLINES, PITS AND SHAFTS

Reference information

Bibliographic references

  • Deposit

    SANTOS, E., PENALVER, L.L., KRIVTSOV, A.I., AND TIJOMIROV, V.A., EDS., 1988, MAPA DE YACIMIENTOS MINERALES METALICOS Y AGUAS MINERALES DE LA REPUBLICA DE CUBA: MINISTERIO DE LA INDUSTRIA BASICA, 1:500,000 SCALE, 5 SHEETS.

  • Deposit

    SIMONS, F.S., AND STRACZEK, J.A., 1958, GEOLOGY OF THE MANGANESE DEPOSITS OF CUBA: U.S. GEOLOGICAL SURVEY BULLETIN 1057, P. 240-243.

  • Other Database

    CIMRI

  • Production

    SIMONS AND STRACZEK (1958)

General comments

Subject category Comment text
Deposit THICKNESS RANGES FROM 0.6 TO 3.0 METERS. IN TUFF BEDS IN THE BASAL 45 M OF A PYROCLASTIC SEQUENCE, PROBABLY 2 BEDS ABOUT 15 M APART, UPPER BED MORE PRODUCTIVE, INTRUDED BY A LAVA DOME OF DACITE PORPHYRY.
Deposit AREA: 25-30 HECTARES; MOST ORE CAME FROM GRANZON, SOME FROM BEDDED ORE, AREA OF GRANZON GIVEN ABOVE, AS DEEP AS 5 M BUT AVERAGES 2-2.5 M, CONC. TO SHIPPING ORE 20:1 TO 35:1.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1992 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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