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Laurani Mine

Producer in La Paz, Bolivia with commodities Copper, Silver, Gold, Lead, Zinc, Arsenic, Bismuth, Antimony, Tin
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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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Reserves and resources
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10110044
MRDS ID TC00502
Record type Site
Current site name Laurani Mine
Alternate or previous names Veins: Carnavalito, Nueva, Negra, Paralela, San Antonio, San Carlos, San Geronimo, Santo Domingo, Toro

Geographic coordinates

Geographic coordinates: -67.7745, -17.3785 (WGS84)
Elevation 4050
Relative position 10 KM S60E OF CHIJMUNI

Site location context

Political divisions (FIPS codes)

La Paz(province)

Bolivia(country)

South America(continent)

Land(continent)

Federal lands

Federal(land status)

Geographic areas

Country State
Bolivia La Paz

Comments on the location information

  • ON CERRO HUARA PATA; PREVIOUS QUAD DESIGNATION = COROCORO (SE 19-7) 1:250000

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Primary
Lead Secondary
Zinc Critical Tertiary
Arsenic Critical Tertiary
Bismuth Critical Tertiary
Antimony Critical Tertiary
Tin Critical Tertiary

Materials information

Materials Type of material
Bismuthinite Ore
Bornite Ore
Bournonite Ore
Calaverite Ore
Chalcopyrite Ore
Electrum Ore
Enargite Ore
Famatinite Ore
Galena Ore
Miargyrite Ore
Polybasite Ore
Rickardite Ore
Sphalerite Ore
Stannite Ore
Stephanite Ore
Tetrahedrite Ore
Barite Gangue
Pyrite Gangue
Quartz Gangue
Sericite Gangue
Siderite Gangue

Alteration

  • (Local) Intense Propylitization, Silicification, Clays

Analytical data

Result ANALYSES BY GEOBOL: 2.55 TO 17.4% CU
Result 2.6 TO 16.15 G/T AG, 3 TO 10 G/T AU. ANALYSES BY CIA MINERA INTI ILLIMANI ARE FINDING NO AU AND AVERAGE AG GRADES OF 4 TO 6 G/MT.

Mineral occurrence model information

Model code 154
USGS model code 25e
Deposit model name Epithermal quartz-alunite Au
Mark3 model number 38

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Laurani Volcanic Massif
    Rock description Laurani Volcanic Massif
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -67.7745, -17.3785
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description N50w Fault Between Folded Silurian Quartzite And Cretaceous Mudstone
Type of structure Local
Structure description Fractured And Eroded Stratovolcano

Ore body information

  • Depth to top 0M

Controls for ore emplacement

  • Intersecting N15e And N75e Fractures

Comments on the geologic information

  • DEPOSIT IS ZONED TO NE WITH PYRITE-ENARGITE CORE, ENARGITE-TENNANTITE MIDDLE ZONE AND SPHALERITE-SILVER-BEARING GALENA OUTER ZONE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1750
Discoverer Spanish Colonists
Year of first production 1775

Mining district

District name Laurani

Land status

Ownership category Federal

Ownership information

  • Type Operator
    Owner United Mining Corp.; Cia. Minera Inti Illimani
  • Type Owner
    Owner United Mining Corp. (50%); Cia. Minera Inti Illimani

Production statistics

  • Year 1960
    Material CONS
    Accuracy Accurate
    Description Ap_Grade: ^20% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Conc. Copper Copper 20wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1988
    Total resources 2000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 169 g/mt Silver Major 1988
    Gold Au 2.41 g/mt Gold Major 1988

Comments on the reserve resource information

  • COMPANY REPORTS OF THE 1930'S CITED BY SCHNEIDER-SCHERBINA LISTED RESERVES AS 50,000 TO 100,000 MT ORE WITH 3.0 TO 3.5% CU, 300 TO 400 G/MT AG, AND 4 TO 5 G/MT AU.

Comments on the workings information

  • DEVELOPED BY 3 MAIN ADITS 300 TO 900 M LONG AS OF LATE 1950'S. ABOUT 5000 M TOTAL BY 1930.

Comments on development

  • CIA. PLAYA VERDE WORKED 62 DUMPS AT PATACAMAYA MILL FROM 1919. SOCAVON BRICKER DRIVEN 980 M 1920-1927. ST. JOSEPH LEAD CO. EXAMINED MINE IN 1927. ACQUIRED BY CHILEAN CIA MINERA LAURANI DE BOLIVIA S.A. USING VISCACHANI 40 MT/D FLOATATION MILL FROM 1936. PROPERTY EXAMINED BY HOCHSCHILD IN 1938. MINED FOR CU IN THE 1950'S. ; MILL.CAP: 180

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MINERALIZED AREA 2 KM BY 1 KM. DEPTH OF MINERALIZATION UNKNOWN. VEINS ORIENTED N15E 80SE, N45E 70NW AND N10E 75NW. VEINS ARE 0.3 TO 1 M WIDE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1989 Long, Keith; Hinojosa, A. U.S. Geological Survey

Beyond USGS

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

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