El Triunfo-San Antonio Zone

Past Producer in Baja California Sur, Mexico with commodities Gold, Silver, Lead, Zinc, Antimony, Cobalt
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10098732
MRDS ID MX00128
Record type Site
Current site name El Triunfo-San Antonio Zone

Geographic coordinates

Geographic coordinates: -110.03533, 23.8043 (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 Baja California Sur

Comments on the location information

  • ESTIMATED TO WITHIN 15 SECONDS.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Zinc Critical Tertiary
Antimony Critical Tertiary
Cobalt Critical Tertiary

Materials information

Materials Type of material
Boulangerite Ore
Galena Ore
Pyrite Ore
Smaltite Ore
Sphalerite Ore
Stibnite Ore
Tetrahedrite Ore
Chalcedony Gangue
Quartz Gangue

Analytical data

Result 8 G/MT AU, 850 G/MT AG, 4% PB, (WISSER, 1954).

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -110.03533, 23.8043

Economic information

Comments on the geologic information

  • SCHIST INTRUDED BY GNEISSIC GRANITE, APLITE SILLS, AND QUARTZ PORPHYRY/GRANITE PORPHYRY DIKES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1750
Year of first production 1874

Mining district

District name San Antonio/Sierra De Victoria

Comments on the production information

  • MINE CLOSED IN 1918 AND WAS NEVER ABLE TO FULLY RE-OPEN.

Comments on development

  • MAIN ACTIVITY: 1878-1889.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit WIDELY DISTRIBUTED GOLD AND SILVER IN LENSES OF CLOSELY SPACED STRINGERS CONSISTING OF DRUSY, CHALCEDONIC QUARTZ AND SULFIDES, IN SCHIST NEAR CONTACT WITH APLITE OR GNEISSIC GRANITE. INDIVIDUAL OREBODIES AVERAGED 2-3 FT IN THICKNESS. LOCALLY UP TO 40% SULFIDES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1987 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-JUN-1988 Leonard, Kenneth R. U.S. Geological Survey

Beyond USGS

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