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La Fortuna

Past Producer in Chihuahua, Mexico with commodities Silver, Lead, Zinc, Barium-Barite
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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. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10049495
MRDS ID MX02218
Record type Site
Current site name La Fortuna
Alternate or previous names Inca Y Fortuna, Veins: Fortuna, Santo Nino, Virgin Julieta, San David, Galeana
Related records 10166916

Geographic coordinates

Geographic coordinates: -107.80198, 30.13741 (WGS84)
Location accuracy 2000(meters)
Relative position 30 KM SE OF CASAS GRANDES; 30 KM SSE OF CASAS GRANDES MN MINE

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Chihuahua

Comments on the location information

  • ABOUT 20 KM WEST OF GALENA

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Zinc Critical Secondary
Barium-Barite Critical Tertiary

Materials information

Materials Type of material
Pyrite Ore
Sphalerite Ore
Barite Gangue
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Wallrock Alteration Restricted To A Few Meters Of Silicification And Quartz Veining In Volcanics, And Local Chloritization In Diorite.

Mineral occurrence model information

Model code 106
USGS model code 25b
Deposit model name Epithermal vein, Creede
Mark3 model number 58

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)

Nearby scientific data

(1) -107.80198, 30.13741
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Many Nw Trending 10-20 Km Long Structures Cut Sierra San Joaquin-Sierra Del Cristo Areas.

Ore body information

  • Thickness 5M
    Length 1500M
    Width 120M
    Depth to bottom 120M

Comments on the geologic information

  • HOST ROCKS FORM A 500 METER THICK GENTLY SLOPING DOME OF RHYOLITIC IGNIMBRITES, FLOWS AND BRECCIAS INTRUDED AT THE CORE BY A PREMINERAL DIORITE PLUG. GEOLOGIC ENVIRONMENT: ESSENTIALLY UNDEFORMED CONTINENTAL VOLCANIC ROCKS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Galeana / Nuevo Casas Grandes

Ownership information

  • Type Operator
    Owner Minera Urique, Lacana Mining-Luismin
    First year 1981

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 254.12 g/mt Silver Major 1983

Comments on the reserve resource information

  • POTENTIAL BASED ON EXTENSION OF FORTUNA AND SANTO NINO VEINS AND ADJACENT VIRGIN JULIETA AND SAN DAVID VEINS.
  • RESERVES OF FORTUNA AND SANTO NINO VEINS AS DELINEATED IN SIX LEVELS TO 210 METER DEPTH WITH 2 METERS AVERAGED WIDTH.

Comments on development

  • ORIGINAL MINE DEVELOPMENT COMPLETED PRIOR TO 1910. 40,000 TONS STOPED AND MILLED, 1960-63, BY MINERA SAN JOAQUIN. THREE LEVELS EXTENDED BY EL PASO GAS CO. IN 1963. EXPLORATION PROGRAM UNDERWAY IN 1981-82 CONDUCTED BY MINERA URIQUE.

Reference information

Bibliographic references

  • Deposit

    GILES, D.A., 1983, EXPLORATION AT THE FORTUNA SILVER PROPERTY, CHIHUAHUA, MEXICO IN GEOLOGY AND MINERAL RESOURCES OF NORTH-CENTRAL CHIHUAHUA; GUIDEBOOK FOR THE 1983 FIELD CONFERENCE: EL PASO, TEXAS, EL PASO GEOLOGICAL SOCIETY, P. 317.

  • Deposit

    GONZALEZ R., J., 1956, MEMORIA GEOLOGICO-MINERA DEL ESTADO DE CHIHUAHUA: XX CONGRESO GEOLOGICO INTERNACIONAL (DURANGO, MX), P. 44-45.

  • Deposit

    CLARK, K.F., AND GOODELL, P.C., (EDS.), 1983, GEOLOGY AND MINERAL RESOURCES OF NORTH-CENTRAL CHIHUAHUA: EL PASO GEOLOGICAL SOCIETY, GUIDEBOOK, 1983 FIELD CONFERENCE, 0CT. 7-9, 1983, PLATE 1, SCALE 1:500000.

  • Deposit

    GUILD, P.W., 1981, PRELIMINARY METALLOGENIC MAP OF NORTH AMERICA: U.S. GEOLOGICAL SURVEY CIRCULAR 858-A,B.

  • Deposit

    SOCIEDAD GEOLOGICA MEXICANA A.C., 1985, PLANO GEOLOGICO MINERO DE CHIHUAHUA, MEXICO: CONSEJO DE RECURSOS MINERALES AND FEDERAL GOVERNMENT OF MEXICO, MEXICO D.F., 1 SHEET, SCALE 1:500,000.

  • Deposit

    SECRETARIO DE PROGRAMACION Y PREPUESTO, 1983, NUEVO CASAS GRANDES: CARTA GEOLOGICA; MEXICO D.F., SCALE 1:250,000.

  • Deposit

    SALAS, G.P., 1975, CARTA Y PROVINCIAS METALOGENETICAS DE LA REPUBLICA MEXICANA: CONSEJO DE RECURSOS MINERALES PUBLICACION 21 E, P. 189.

  • Production

    GILES, 1983.

General comments

Subject category Comment text
Deposit REGIONAL CIRCULAR TOPOGRAPHIC EXPRESSION OF THE FORTUNA VALLEY SUGGESTS A CALDERA STRUCTURE THAT MAY BE AN IMPORTANT GUIDE TO PROSPECTING IN THE AREA. RECORD # MX2197 BY K.R. LEONARD HAS BE INCORPORATED INTO THIS ONE. ; INFO.SRC : 1 PUB
Deposit AG MINERALIZATION WITH MINOR PB-ZN VALUES IN TWO PAIRS OF NW AND NE STRIKING QUARTZ-CALCITE-BARITE VEINS 1 TO 5 METERS WIDE WITH STRIKE LENGTHS RANGING FROM 400 TO 1500 METERS. OXIDATION AND ENRICHMENT OF METAL VALUES WITH ASSOCIATED MN-OXIDES EXTENDS TO 120 METER DEPTH. DISSEMINATED ARG. GALENA, SPHALERITE AND PYRITE IN BANDED CALCITE-QUARTZ GANGUE PREDOMINATES IN LOWER LEVELS OF THE MINE. TWO PROSPECT AREAS MAPPED ON SOC. GEOL. MEX. A.C., 1985.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1988 Leonard, Kenneth R. (Page, Norman J.) U.S. Geological Survey
Updater 01-JUN-1988 Leonard, Kenneth R. U.S. Geological Survey
Updater 01-DEC-1990 Staude, John-Mark G. U.S. Geological Survey

Beyond USGS

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

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