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  3. Mineral Resource Data System (MRDS)

La Negra

Producer in Mexico with commodities Copper, Lead, Silver, Zinc
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10279886
MAS/MILS ID 2010410001
Record type Site
Current site name La Negra
Alternate or previous names La Negra Unidad

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -99.50033, 20.85056 (WGS84)
Elevation 2200

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country
Mexico

Commodities

Commodity Importance
Copper Primary
Lead Primary
Silver Primary
Zinc Critical Primary

Materials information

Materials Type of material
Arsenopyrite Unknown
Calcite Unknown
Chalcopyrite Unknown
Galena Unknown
Garnet Unknown
Pyrite Unknown
Pyrrhotite Unknown
Quartz Unknown
Silver Unknown

Nearby scientific data

Ore Body (1) -99.50033, 20.85056
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 60W
    Thickness 8M
    Length 1500M
    Width 300M
    Depth to top 0M
    Field Value
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 MASSIVE
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control FOLDING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Strike And Dip N30W:60W
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1550
Mining method Open Stope - Sublevel
Year of first production 1965
Milling method Flotation

Mining district

District name La Negra District

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Industrias Penoles S. A. De C. V. (Grupo Penoles)
    Interest 100
    Home office Mexico
    Year 1989
  • Type Operator
    Owner Cia Mintra La Negra And Angxas
    Home office Mexico
    Year 1992

Comments on the ownership information

  • OWNER: INDUSTRIAS PENOLES, S.A. OPERATOR: CIA. MINERA LA NEGRA Y ANEXAS, S.A.

Comments on the production information

  • MOST RECOVERED SILVER IS IN THE COPPER CONCENTRATE.

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Measured 1814000mt ore
    Demonstrated 1814000mt ore
    Total resources 1814000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 170 g/mt Silver Major 1976
    Zinc Zn 3 wt-pct Zinc Major 1976
    Lead Pb 2.5 wt-pct Lead Major 1976
    Copper Cu 1 wt-pct Copper Major 1976
  • Type In-situ
    Estimate year 1993
    Demonstrated 1260000mt ore
    Total resources 1260000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 3.6 wt-pct Zinc Major 1993

Comments on the reserve resource information

  • INFORMATION FROM FIELD TRIP

Workings at the site

  • Type of workings Underground
    Overall depth 300M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method SUBLEVEL 10-43
    Percent Recovery 90
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 2
    Avg. Length of Adits (m) 1500
    Number of Adits 1
    Capacity 1100
    Capacity Units MT ORE/DAY
    Operating Days per Year 305
    Year of Information 1989

Reference information

Bibliographic references

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE, 1993,

  • Reserve-Resource

    P. 49.

  • Deposit

    CONSESO DE RECURSOS NATURALES NO RENOVABLES. ING.G.P.SALAS.Y

  • Deposit

    PRIVATE REPORT

  • Deposit

    DESCRIPCION DE LA PLANTA DE BENEFICIO. COMPANIA MINERA LA NE

  • Deposit

    ANEXAS, ING VLISIS MONTED 1972

  • Deposit

    GEOLOGIA DEL DEPOSITO MINERAL DE LA NEGRA. ING.JOSE E. GAYTA

  • Deposit

    DESCRIPCION DEL SISTEMA DE MINADO,UNIDAD LA NEGRA.ING J.CARD

  • Deposit

    EMJ 1975 INTERNATIONAL DIRECTORY OF MINING

  • Deposit

    BULL. NO. M4-B145,DENVER EQPT. DIV.,JOY MANUFACTURING CO.

General comments

Subject category Comment text
Deposit AUG76-RCO 040- LOCATED 377 KM FROM MEXICO D.F. 346 K FROM MEXICO DF. TO JALPAN AND 31 KM DIRT CURVY ROAD TO TH AUG76-RCO 070- SILVER IS MINERALIZED AS A HESSITE(AG2TE) AUG76-RCO 071- SILVER AS HESSITE;AG2TE AUG76-RCO 151-150 TPH CRUSHING PLANT FACILITY. MILL PLANT PR ONLY 500 MITDIC TONS PER DAY AUG76-RCO 151- TOTAL PRODUCTION COST= $29.55, BREAKEVEN COST CU= $0.157.(OPER.COST=$21.99, SMELTING & OTHERS=$0.491, G ADMIN.$1.14 PER TON OF ORE MILLED. AUG76-RCO 151- DOES CUSTOM MILLING, BUYS ORE.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-AUG-1994 Difrancesco, Carl A. U.S. Bureau of Mines

Beyond USGS

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

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