Bolanitos

Producer in Guanajuato, Mexico with commodities Gold, Silver
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. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10182171
MAS/MILS ID 2010170025
Record type Site
Current site name Bolanitos

Geographic coordinates

Geographic coordinates: -101.33368, 21.04635 (WGS84)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Guanajuato

Commodities

Commodity Importance
Gold Secondary
Silver Primary

Materials information

Materials Type of material
Acanthite Unknown
Chalcopyrite Unknown
Electrum Unknown
Galena Unknown
Gold Unknown
Pyrite Unknown
Silver Unknown
Sphalerite Unknown

Nearby scientific data

(1) -101.33368, 21.04635

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Type of Orebody #2 STOCKWORK
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. UNKNOWN
    Date of Last Modification 790717

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant No
Year of first production 1976

Ownership information

  • Type Operator
    Owner Negociacion Minera Santa Lucia, S. A. De C. V.
    Home office Mexico
    Year 1979
  • Type Owner
    Owner Lacana Mining Corp.
    Interest 30
    Home office Canada
    Year 1979
  • Type Owner
    Owner Minera Mexicana Penoles
    Interest 33
    Home office Mexico
    Year 1979
  • Type Owner
    Owner Compania Fresnillo S. A.
    Interest 37
    Home office Mexico
    Year 1979

Production statistics

  • Year 1976
    Description 7,721 Tonnes Of Ore Mined And Milled
  • Year 1977
    Description 18,257 Tonnes Of Ore Mined And Milled

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Measured 300000mt ore
    Demonstrated 300000mt ore
    Total resources 300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 391.9 g/mt Silver Major 1976
    Gold Au 3.11 g/mt Gold Minor 1976

Workings at the site

  • Type of workings Underground
    Overall depth 2M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method SHRINKAGE METHODS
    1st Condition of Workings OPEN
    Capacity 125
    Capacity Units MT ORE/DAY
    Unit Production Cost 11.13
    Units of Production $/MT ORE
    Year of Information 1979

Reference information

Bibliographic references

  • Reserve-Resource

    MINING MAGAZINE, JUNE 1976, P. 497: SILVER DEVELOPMENTS

  • Reserve-Resource

    MOVE AHEAD IN MEXICO.

  • Deposit

    MINING MAGAZINE, FEBRUARY 1979, P. 110: SILVER MINING AT

  • Deposit

    LAS TORRES.

  • Deposit

    WORLD MINING, SEPTEMBER 1977, P. 78: GUANAJUATO GROUP

  • Deposit

    REVIVES MEXICAN SILVER DISTRICT; FOUR MINES, NEW MILL.

General comments

Subject category Comment text
Deposit BOLANITOS IS LOCATED APPROX. 4 KM. WEST OF THE CEBADA MINE. AN OLD SHAFT NEAR THE ADIT PORTAL, THE SAN LUIS, HAS BEEN RECONDITIONAD AND SUNK FROM 42M DEPTH TO L05 METERS. LEVELS HAVE BEEN DRIVEN AT 42M, 70M, 84M, AND A CRUSHING STATION AND LOADING POCKETS ARE PLANNED BELOW THE 84 METE LEVEL. PRODUCTION AT BOLANITOS IS CURRENTLY ONLY SOME 100-125 TONNE/DAY BUT THERE IS POTENTIAL FOR LARGE INCREASES IN THE LEVEL OF PRODUCTION. FOR ADDITIONAL COMMENTS SEE 2010170017: THE LAS TORRES MINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Peterson, Gary R. U.S. Bureau of Mines

Beyond USGS

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