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Palacaguina

Occurrence in Madriz, Nicaragua with commodity Antimony
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10086139
MRDS ID W702065
Record type Site
Current site name Palacaguina
Alternate or previous names La Cadena, La Minita

Geographic coordinates

Geographic coordinates: -86.43331, 13.47591 (WGS84)
Elevation 650
Location accuracy 500(meters)
Relative position 90 MILES N OF MANAGUA, NEAR PALACAGUINA, Acc +/- 10 Sec, Acc +/- 10 Sec, Acc +/- 10 Sec, Acc +/- 10 Sec

Site location context

Political divisions (FIPS codes)

Madriz(province)

Nicaragua(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Nicaragua Madriz

Comments on the location information

  • 2 MILES BY ROAD FROM PALACAGUINA

Commodities

Commodity Importance
Antimony Critical Primary

Materials information

Materials Type of material
Pyrite Ore
Stibnite Ore
Quartz Gangue

Alteration

  • (Local) Some Alteration And Disseminated Stibnite Mineralization In The Schist Outwards From The Veins.

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Rock unit name Totogalpa Formation;Matagalpa Volcanics
    Rock description Totogalpa Formation;Matagalpa Volcanics

Nearby scientific data

(1) -86.43331, 13.47591
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Strongly Deformed Folds, Oriented Sw-Ne. Quartz Filled Fractures Generally About Perpendicular To Schistosity And Fold Orientation.

Ore body information

  • General form LENTICULAR AND IRREGULAR PODS
    Strike N60W
    Dip 40NE
    Thickness 0.91M
    Length 3.05M
    Width 1.52M

Controls for ore emplacement

  • Zoppis Bracci And Laguna Note Proximity To Sandstone (Quartzite?) Lenses In Schist, And Laguna Speculates That Ore Was Deposited In Fold Noses In The Schist, From The Contact With The Sandstone Upwards (Permeability Control).

Comments on the geologic information

  • IN AREA OF VOLCANIC FLOWS AND PYROCLASTIC ROCKS WITH MICA SCHIST BEDROCK EXPOSED IN MORE DEEPLY INCISED VALLEYS. GRAPHITIC MICA SCHIST AND PHYLLITES IN CONTACT WITH RHYOLITE INTRUSIVE AND CUT BY QUARTZ VEINS. ALTERED ANDESITIC DIKES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Comments on the reserve resource information

  • IN 1943 A FEW TONS OF SILICIOUS ORE PILED NEAR THE WORKINGS.

Comments on the workings information

  • 2 PITS 25 FT AND 15 FT DEEP AND 3 SHORT ADITS

Comments on development

  • A GEOPHYSICAL (SELF-POTENTIAL) SURVEY INDICATED AN INTERESTING ANOMALY WHICH MAY BE DUE TO GRAPHITE IN UNDERLYING SCHIST, BUT MAY BE GALENA - SUGGESTS DRILLING (SALAMIS, 1965).

Reference information

Bibliographic references

  • Deposit

    INSTITUTO CENTROAMERICANO DE INVESTIGACION Y TECNOLOGIA INDUSTRIAL (ICAITI), 1970, MAPA METRALOGENETIO DE AMERICA CENTRAL; 1:2000000 & ESTUDIOS METALOGENETICOS DE AMERICA CENTRAL: PUBLICIONES GEOLOGICAS DEL ICAITI NUMERO III, 76 P.

  • Deposit

    ROBERTS, R.J., AND IRVING, E.M., 1957, MINERAL DEPOSITS OF CENTRAL AMERICA: U.S. GEOLOGICAL SURVEY BULLETIN 1034, P. 47-48.

  • Deposit

    SALAMIS, C., 1965, GEOLOGICAL AND GEOPHYSICAL EXPLORATION IN THE PALACAGUINA ANTIMONY AREA: MANAGUA, NICARAGUA MINERAL SURVEY, SERVICIO GEOLOGICO NACIONAL, 8 P.

  • Deposit

    ZOPPIS-BRECCI, L., 1957, GEOLOGICO DE LA REGION DE PALACAGUINA Y DE SU DEPOSITO DE ANTIMONIO: MANAGUA, BOLETIN DEL SERVICIO GEOLOGICO NACIONAL DE NICARAGUA, NO. 1, P. 29-34

  • Deposit

    LAGUNA, T., 1957, INTERPRETACION GEOFISICA DEL ESTUDIO EFECTUADO EN PALACAGUINA: BOLETIN DEL SERVICIO GEOLOGICO NACIONAL DE NICARAGUA, NO. 1, P. 35-37.

General comments

Subject category Comment text
Deposit SIZE IS FOR LARGEST OF PODS. PROBABLY LESS THAN 60 M DEPTH EXTENSION ACCORDING TO LAGUNA (GEOPHYSICS).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-90 Bliss, James D. U.S. Geological Survey
Updater 01-FEB-92 Page, Norman J. U.S. Geological Survey
Updater 01-SEP-92 Venable, Margaret U.S. Geological Survey

Beyond USGS

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

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