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Macuelizo 1

Occurrence in Nueva Segovia, Nicaragua with commodities Tungsten, Molybdenum, Silver, Gold
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10086134
MRDS ID W702060
Record type Site
Current site name Macuelizo 1
Alternate or previous names Veins Include: Santa Elena, Carrizo, Mi Nerva, Venus, Venado, La Tajona I, La Tajona Ii, La Tajona Iii, La Tajona Iv, Austa, Culebra, Voladora, La Cabulla, De La Soledad I, De La Soledad Ii, De La Soledad Iii, And La Muda

Geographic coordinates

Geographic coordinates: -86.56666, 13.69257 (WGS84)
Elevation 1070
Location accuracy 1000(meters)
Relative position 6.5 KM WSW OF TOWN OF DIPILTO, 165 KM N OF MANAGUA.

Site location context

Political divisions (FIPS codes)

Nueva Segovia(province)

Nicaragua(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Nicaragua Nueva Segovia

Comments on the location information

  • Drainage area: QUEBRADA LA CUBELLA, QUEBRADA SANTA ELENA, RIO MACUELIZO, RIO COCO

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Primary
Silver Primary
Gold Secondary

Comments on the commodity information

  • WOLFRAMITE CRYSTALS FROM A FEW MM TO 10 CM LONG, COMMONLY IN AGGREGATES AND BANDS AND MAY CONSTITUTE UP TO 80% OF VEIN IN LOCALIZED RICH AREAS. SCHEELITE SOMETIMES REPLACES WOLFRAMITE AND IN OTHER CASES FORMS WELL DEFINED CRYSTALS UP TO 2-3 CM, SOMETIMES FORMING AGGREGATES. VEINS CONTAINING SCHEELITE GENERALLY CONTAIN WOLFRAMITE, BUT NOT VICE-VERSA. MOLYBDENITE IS FOUND ONLY IN TWO VEINS, LA MUDA AND LA SOLEDAD. MANY STERILE BUT OTHERWISE SIMILAR QUARTZ VEINS ARE FOUND.

Materials information

Materials Type of material
Ferberite Ore
Huebnerite Ore
Molybdenite Ore
Scheelite Ore
Wolframite Ore
Chalcopyrite Gangue

Analytical data

Result SANTA ELENA: 3 SAMPLES, 0.8 G/T AU, 60 G/T AG, 1.6% WO3. CARRITO: 6 SAMPLES, 0.6 G/T AU, 47 G/T AG, 3% WO3. MNERVA: 1 SAMPLE, 6 G/T AG, 0.05% WO3. VENUS: 1 SAMPLE, 0.25 G/T AU, 30 G/T AG, 1.2% WO3. VENADO: 1 SAMPLE, 42 G/T AG, 0.87% WO3. LA TAJONA I: 2 SAMPLES, 0.15 G/T AU, 26 G/T AG, 1.5% WO3. LA TAJONA II: 1 SAMPLE, 6 G/T AG, 1.15% WO3. LA TAJONA III: 1 SAMPLE, 6 G/T AG, 0.65% WO3. LA TAJONA IV: 1 SAMPLE, 5 G/T AG, 1.46% WO3. AGUSTA: 2 SAMPLES, 0.15 G/T AU, 12 G/T AG, 1.4% WO3. CULEBRA: 1 SAMPLE, 34 G/T AG, 4.4% WO3. VOLADORA: 1 SAMPLE, 72 G/T AG, 1.05% WO3. LA CABULLA: 2 SAMPLES, 0.15 G/T AU, 26 G/T AG, 8.9% WO3. DE LA SOLEDAD I: 3 SAMPLES, 2.2 G/T AU, 0.04% MO, 120 G/T AG, 11% WO3. THE VALUES FOR AU, AG, AND WO3 LISTED WERE OBTAINED FROM A SHEET OF LAB RESULTS DATED JULY 15, 1961 FROM THE COMISION DE FOMENTO MINERO DE MEXICO. ECHAVARRI AND RUEDA (1962) GIVE MUCH LOWER VALUES IN THEIR ARTICLE.

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Schist
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Totogalpa Formation;
    Rock description Totogalpa Formation;

Nearby scientific data

(1) -86.56666, 13.69257
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Tensional Fractures N60e And E-W, Some N75w

Ore body information

  • Name GENERAL
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 250M
    Width 0.9M
  • Name SANTA ELENA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 225M
    Width 0.9M
  • Name CARRIZO VEIN
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 460M
    Width 20M
  • Name MINERVA VEIN
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 70M
    Width 30M
  • Name VENUS VEIN
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 120M
    Width 25M
  • Name VENADO VEIN
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 200M
    Width 20M
  • Name LA TAJONA I
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 200M
    Width 10M
  • Name LA TAJONA II
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 60M
    Width 10M
  • Name LA TAJONA III
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 120M
    Width 8M
  • Name LA TAJONA IV
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 100M
    Width 10M
  • Name AGUSTA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 175M
    Width 10M
  • Name CULEBRA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 175M
    Width 18M
  • Name VOLADORA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Length 50M
    Width 20M
  • Name LA CABULLA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Width 15M
  • Name DE LA SOLEDAD I
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Width 20M
  • Name DE LA SOLEDAD II
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Width 50M
  • Name DE LA SOLEDAD III
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW
    Width 20M
  • Name LA MUDA
    General form LENTICULAR
    Strike N60E, E-W, N75W}N85E}N80W}N83W}N30E}N80E}N85E}N40E}N65E}N60E}N80E}N80E}N65E}N67E}N70E TO E-W}N70E TO E-W, PARALLEL TO DE LA SOLEDAD I}N60E}N65E
    Dip VERTICAL OR STEEP N}90}90}90}65SE}90}70-85N}90}75N}90}70N-90}70N}45NW}70NW}60-77NW}60-77NW}75NW-90}64NW

Controls for ore emplacement

  • Veins Deposited In Tensional Fractures

Comments on the geologic information

  • LARGE XENOLITHS OF SCHIST ARE HOST ROCK FOR TAJUNA II-IV. N30W DIORITE DIKES PRESENT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1957

Mining district

District name Macuelizo I, Dipilto Region

Comments on the reserve resource information

  • A ROUGH ESTIMATE BASED ON ANALYTICAL DATA GIVES ABOUT 1,500 TONS OF WO3, CALCULATING TO A DEPTH OF 25 M, 1000 T OF WHICH IS CONTAINED IN VEINS WITH 100 TONS OR MORE (SANTA ELENA, CARRIZO, CULEBRA, CABULLA, SOLEDAD I).

Comments on development

  • DISCOVERED BY AN INDIGENT DEAF-MUTE, MAURO CACERES, WHO TOOK SOME SAMPLES IN AND SHOWED THEM TO GEOLOGIST ZOPPIS-BRACCI. SCHEELITE APPEARS IN PAN CONCENTRATE IN GOLD OPERATIONS. ; ECON.COM: THIS DEPOSIT IS GENERALLY CONSIDERED UN-ECONOMIC DUE TO THE SMALL, NARROW, DISCONTINUOUS NATURE OF THE VEINS AND CONCENTRATION OF VALUES IN SMALL POCKETS.

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

    ZOPPIS-BRACCI, L., 1961, ESTUDIO PRELIMINAR DE LAS MINERALIZACIONES DE TUNGSTENO Y MOLIBDENO DE MACUELIZO, DEPARTMENTO DE NUEVA SEGOVIA, BOLETIN DEL SERVICIO GEOLOGICO NACIONAL DE NICARAGUA, NO. 5, P. 33-52.

  • Deposit

    ECHAVARRI-PEREZ, A., AND RUEDA-GAXIOLA, J., 1962, ESTUDIO GEOLOGICO ECONOMICO DE LOS YACIMIENTOS DE TUNGSTENO Y MOLIBDENO DE MACUELIZO, NUEVO SEGOVIA: BOLETIN DEL SERVICIO GEOLOGICO NACIONAL DE NICARAGUA, NO. 6, P. 23-43.

General comments

Subject category Comment text
Deposit Discovery Year: LATE 1950'S?
Deposit LENGTH RANGES FROM 10'S OF M TO 500 M. WIDTH RANGES FROM A FEW CM UP TO 0.9 M. INDIVIDUAL VEINS ARE UNIFORMLY SMALL. LA TAJONA III HAS 2 VEINS 10 CM IN THICKNESS EACH, SITUATED 20 CM APART. DE LA SOLEDAD II IS LESS THAN 1 M FROM DE LA SOLEDAD I. DE LA SOLEDAD III IS 20 M SOUTH OF DE LA SOLEDAD I AND II. LA MUDA IS 2 VEINS, 2 M APART.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1990 Bliss, James D. U.S. Geological Survey
Updater 01-SEP-1992 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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