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  3. Mineral Resource Data System (MRDS)

Charcas

Producer in San Luis Potosi, 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. Reporter information

Geologic information

Identification information

Deposit ID 10303253
MAS/MILS ID 2010450007
Record type Site
Current site name Charcas
Alternate or previous names Charcas Unit

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -101.10038, 23.11716 (WGS84)
Elevation 2000
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico San Luis Potosi

Commodities

Commodity Importance
Copper Secondary
Lead Secondary
Silver Secondary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Pyrite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -101.10038, 23.11716
ListMap

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 UNKNOWN
    Type of Orebody #2 REPLACEMENT
    Primary mode of Origin OXIDATION
    Secondary mode of Origin MAGMATIC DIFFER
    Date of Last Modification 830812

Comments on the geologic information

  • MINERAL ALSO INCLUDE MARMATITE.
  • THE VEIN SYSTEMS, THE MOST IMPORTANT OF WHICH IS THE LEONES-SANTA ISABEL, GENERALLY STRIKE N65W TO EAST-WEST. THE REPLACEMENT BODIES VARY IN SIZE FROM 30 TO 70 METERS HORIZONTALLY AND VERTICALLY, AND ARE ASSOCIATED WITH PERIPHERAL FISSURES AND WITH THE INTRUSIVE BODY.

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1583
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Milling method Flotation

Mining district

District name El Altiplano

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Operator
    Owner Grupo Industrial Minera Mexico S. A. (Immsa)
    Home office Mexico
    Year 1988
  • Type Owner
    Owner Mexico Desarrollo Industrial Minero S. A. (Medimsa)
    Interest 100
    Home office Mexico
    Year 1988

Comments on the ownership information

  • MEDIMSA IS 34% OWNED BY ASARCO, INC.
  • OPERATOR: ASARCO MEXICANA, S.A. ADDED TO ORIGINAL CONTRACT DUE TO SIGNIFICANT RESERVES

Comments on the production information

  • MOST CONTAINED SILVER IS IN THE COPPER CONCENTRATE.
  • SILVER IS IN ALL THREE PRODUCTS. MILL RECOVERY IS 71%, MILL CONCENTRATE GRADE IS 100%.

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Demonstrated 10808500mt ore
    Total resources 10808500mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.8 wt-pct Zinc Major 1987
    Lead Pb 0.6 wt-pct Lead Minor 1987
    Copper Cu 0.3 wt-pct Copper Minor 1987
    Silver Ag 105 g/mt Silver Minor 1987
  • Type In-situ
    Estimate year 1993
    Demonstrated 17000000mt ore
    Total resources 17000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 5.4 wt-pct Zinc Major 1993
    Lead Pb 0.4 wt-pct Lead Minor 1993

Comments on the reserve resource information

  • DATA FROM PAH REPORT.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 2
    1st Condition of Workings UNKNOWN
    Capacity 3450
    Capacity Units MT ORE/DAY
    Operating Days per Year 310
    Year of Information 1989

Reference information

Bibliographic references

  • Reserve-Resource

    PINCOCK, ALLEN & HOLT, JANUARY 1989

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE, 1993,

  • Reserve-Resource

    P. 38.

  • Deposit

    EMJ INTERNATIONAL DIRECTORY OF MINING, 1975.

  • Deposit

    EMJ, FOUR CONCENTRATES FROM CHARCAS UNIT, NOV. 1980,

  • Deposit

    PP. 125-126.

  • Deposit

    INTERNAT. LEAD AND ZINC STUDY GROUP, LEAD AND ZINC NEW MINE

  • Deposit

    AND SMELTER PROJECTS, DEC. 1980.

  • Deposit

    LOS RECUROS NATURALES NO RENOVABLES DE MEXICO. BULLETIN 73.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-1997 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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