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Lluvia De Oro

Past Producer in Chihuahua, Mexico with commodities Gold, Silver
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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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10049405
MRDS ID MX02038
Record type Site
Current site name Lluvia De Oro

Geographic coordinates

Geographic coordinates: -108.30475, 27.09612 (WGS84)
Relative position 10-15 KM N OR E OF REFORMA DISTRICT

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Chihuahua

Comments on the location information

  • ESTIMATED TO NEAREST 15 SECONDS. ON SOC. GEOL. MEX. A.C., 1985 MAP LAT LONG IS 26-57, 108,08

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Silicic

Analytical data

Result 85-312 G/T AU, 850 G/T AG.

Mineral occurrence model information

Model code 172
USGS model code 26a
Deposit model name Carbonate-hosted Au-Ag
Mark3 model number 15

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -108.30475, 27.09612
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Abundent N-S Faults

Ore body information

  • General form LENTICULAR
    Strike EW
    Dip 45 N

Controls for ore emplacement

  • Fracture Controlled

Comments on the geologic information

  • AREAL GEOLOGY: THICK SECTION OF LIMESTONE CONTAINING JURASSIC FOSSILS IS UNDERLAIN BY SANDSTONE, AND SHALE INTERCALATED WITH LIMESTONE. OVERLYING TERTIARY VOLCANICS MAINLY ALTERED FLOWS OF DACITIC-ANDESITIC COMPOSITION, CAPPED BY ANDESITIC TUFFS AND CONGLOMERATE. SEDIMENTARY SECTION INTRUDED BY DIABASE. RHYOLITE DIKES FOUND CUTTING ANDESITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1899

Mining district

District name La Reforma - Urique Area

Reference information

Bibliographic references

  • Deposit

    GONZALEZ-REYNA, J., 1956, MEMORIA GEOLOGICO-MINERA DEL ESTADO DE CHIHUAHUA: XX CONGRESO GEOLOGICO INTERNACIONAL, MEXICO, 1956, P. 120-125.

  • Deposit

    SOCIEDAD GEOLOGICA MEXICANA A.C., 1985, PLANO GEOLOLGICO MINERO DE CHIHUAHUA, MEXICO: CONSEJO DE RECURSOS MINERALES AND FEDERAL GOVERNEMNT OF MEXICO D.F., 1 SHEET, SCALE 1:500,000

General comments

Subject category Comment text
Deposit LENTICULAR BODIES OF SILICIFIED LIMESTONE, 12-21 M WIDE, ALONG FRACTURE STRIKING E-W AND DIPPING 45 DEGREES N. ASSOCIATED WITH DIABASE INTRUSIVE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1988 Leonard, Kenneth R. (Page, Norman J.) U.S. Geological Survey
Updater 01-AUG-1991 Kibbe, R.D. (Staude, J-M.G.) U.S. Geological Survey

Beyond USGS

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

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