La Negra

Occurrence in Chihuahua, Mexico with commodities Iron, Phosphorus-Phosphates, Sulfur
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. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10049434
MRDS ID MX02089
Record type Site
Current site name La Negra
Related records 10303437

Geographic coordinates

Geographic coordinates: -104.1977, 28.2111 (WGS84)
Location accuracy 1000(meters)
Relative position IN THE LOMA DE LA NEGRA, NEAR RANCHO DEL HIERRO, ABOUT 50 KM E OF LA PERLA. 10 KM S OF GUADALUPE, 10 KM SE OF GALEMES MINE., Acc To Within +/- 30 Secouds

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

  • 35 KM E OF THE CITY OF LA PERLA.

Commodities

Commodity Importance
Iron Primary
Phosphorus-Phosphates Tertiary
Sulfur Tertiary

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Martite Ore
Specularite Ore
Apatite Gangue

Alteration

  • (Local) Chloritization, Kaolinization

Analytical data

Result AVERAGE GRADE: 67.000% FE, 0.130% P, 0.046% S, 3.760% SILICA, 0.480% CAO, (MINAS DEL NORTE, S.A.). RANGE: 56.48-70.00% FE, 0.29-0.063% S, 0.178-0.067% P, (GONZALEZ, 1956).

Mineral occurrence model information

Model code 158
USGS model code 25i
Deposit model name Volcanic-hosted magnetite

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -104.1977, 28.2111

Economic information

Ore body information

  • Length 160M
    Width 40M

Comments on the geologic information

  • GEOLOGIC ENVIRONMENT COMPRISED OF ESSENTIALLY UNDEFORMED CONTINENTAL VOLCANIC ROCKS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Mining district

District name La Negra District/La Perla Area

Reserves and resources

  • Type In-situ
    Estimate year 1961
    Total resources 130000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P 0.13 wt-pct Phosphorus Trace 1961
    Sulfur S 0.05 wt-pct Sulfur Trace 1961
    Iron Fe 67 wt-pct Iron Major 1961

Comments on the reserve resource information

  • PROVEN RESERVES.
  • TOTAL RESERVES.

Comments on development

  • EXPLORED BY DD-HOLES AND UNDERGROUND WORKINGS.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

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

  • Deposit

    GOMEZ R., D., 1961, INVENTARIO DE LOS YACIMIENTOS FERRIFEROS DE MEXICO: CONSEJO DE RECURSOS NATURALES NO RENOVABLES PUBLICACION 3 E, (CHIHUAHUA LOC. 2).

  • Deposit

    GONZALEZ REYNA, J., 1956, MEMORIA GEOLOGICO-MINERA DEL ESTADO DE CHIHUAHUA: CONGRESO GEOLOGICO INTERNACIONAL, 20TH, DURANGO, MEXICO, 1956, P. 218-220.

  • Deposit

    CARDENAS VARGAS, J., Y DEL CASTILLO GARCIA, L., 1964, YACIMIENTOS DE HIERRO DE LA PERLA Y LA NEGRA, MUNICIPIO DE CAMARGO, CHIHUAHUA: CONSEJO DE RECURSOS NATURALES NO RENOVABLES, BOLETIN 69.

  • Deposit

    COX, D.P., AND SINGER, D.A., 1986, MINERAL DEPOSIT MODELS: USGS BULLETIN 1693, 379 P.

  • 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, 1984, CIUDAD DELICIAS (H13-11): CARTA GEOLOGICA; INSTITUTO NACIONAL DE ESTADISTICA GEOGRAFIA E INFORMACION, MEXICO D.F., SCALE 1:250,000.

  • Reserve-Resource

    GOMEZ, 1961.

General comments

Subject category Comment text
Deposit 160 M X 40 M AREA CONTAINS LENTICULAR BODIES OF HIGH-GRADE, COMPACT IRON ORE IN LARGE IN SITU FRACTURE BLOCKS. NUMEROUS VEINLETS AND FRACTURE FILLINGS 1-5 CM THICK AND VEINS 10-50 M LONG AND UP TO 50 CM WIDE IN SURROUNDING QUARTZ MONZONITE. SIMILAR 600 SQ. M EXPOSURE LIES 1600 M NE OF MAIN BODY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-88 Leonard, Kenneth R. (Page, Norman J.) U.S. Geological Survey
Updater 01-JUN-88 Leonard, Kenneth R. U.S. Geological Survey
Updater 01-APR-91 Staude, John-Mark G. U.S. Geological Survey

Beyond USGS

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