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La Blanca

Past Producer in Sonora, Mexico with commodities Silver, Lead, Zinc, Gold, Copper
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10049299
MRDS ID MX00581
Record type Site
Current site name La Blanca
Related records 10230207

Geographic coordinates

Geographic coordinates: -109.78397, 29.73352 (WGS84)
Relative position 5 KM DUE W OF OPOSURA MASSIVE SULFIDE DEPOSIT. LOCATION PLOTTED FROM DESCRIPTION.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Sonora

Comments on the location information

  • ESTIMATED TO NEAREST 1 MINUTE.

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Zinc Critical Secondary
Gold Secondary
Copper Tertiary

Materials information

Materials Type of material
Covellite Ore
Galena Ore
Sphalerite Ore
Quartz Gangue

Analytical data

Result SAMPLES OF RANDOMLY SELECTED VEIN MATERIAL: 4.9 OZ/TON AG, 0.2 OZ/TON AU, 0.9% PB, 0.2% ZN.

Mineral occurrence model information

Model code 106
USGS model code 25b
Deposit model name Epithermal vein, Creede
Mark3 model number 58

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Rock unit name La Huerta Formation
    Rock description La Huerta Formation
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite

Nearby scientific data

(1) -109.78397, 29.73352
ListMap

Economic information

Controls for ore emplacement

  • Fault Controlled

Comments on the geologic information

  • VEIN FOLLOWS RANGE FRONT FAULT ALONG W BASE OF SIERRA DE LA HUERTA.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Sierra De La Huerta

Comments on the workings information

  • MINED TO DEPTHS OF >50 M.

Comments on development

  • MINED ON A SMALL SCALE.

Reference information

Bibliographic references

  • Deposit

    MARRS, C.K., AND GUILBERT, J.M., 1981, GEOLOGY AND DEPOSITIONAL ENVIRONMENT OF THE OPOSURA MASSIVE SULFIDE DEPOSIT, SONORA, MEXICO IN ORTLIEB, L, AND ROLDAN Q., J., (EDS.), GEOLOGY OF NORTHWESTERN MEXICO AND SOUTHERN ARIZONA; FIELD GUIDES AND PAPERS: HERMOSILLO, SONORA, U.N.A.M. INSTITUTO GEOLOGICO, ESTACION REGIONAL DEL NOROESTE, P. 169-212

General comments

Subject category Comment text
Deposit VEIN COMPOSED OF WHITE "BULL" QUARTZ CONTAINS COARSE GRAINED SPHALERITE, GALENA, AND AG SULFOSALTS OVER WIDTHS OF SEVERAL METERS. SPHALERITE PARTIALLY REPLACED BY COVELLITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1988 Leonard, Kenneth R. (Page, Norman J.) U.S. Geological Survey

Beyond USGS

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

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