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San Carlos

Occurrence in Chihuahua, Mexico with commodity Mercury
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Links to other databases
  9. Bibliographic references
  10. General comments
  11. Reporter information

Geologic information

Identification information

Deposit ID 10049457
MRDS ID MX02142
Record type Site
Current site name San Carlos
Related records 10133172

Geographic coordinates

Geographic coordinates: -103.96715, 29.16691 (WGS84)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Terlengua Number 3(quadrangle 1:63,360 scale)

Chisos Mountains(quadrangle 1:100,000 scale)

Emory Peak(quadrangle 1:250,000 scale)

Geographic areas

Country State
Mexico Chihuahua

Comments on the location information

  • ESTIMATED TO WITHIN 15 SECONDS. 2 SEPERATE MINE AREA THE EL POTOSI(WEST CAMP) AND SAN ANTONIO (EAST CAMP). THE DISTRICTS THE SIERRA SANTA EULALIA (SIERRA SANTO DOMINGO).
  • ESTIMATED TO NEAREST MINUTE.

Commodities

Commodity Importance
Mercury Primary

Nearby scientific data

(1) -103.96715, 29.16691
ListMap

Economic information

Comments on the geologic information

  • GEOL.COM: STRATIGRAPHIC SECTION (OLDEST TO YOUNGEST): BLUE LIMESTONE (CRET), STRONGLY RECRYSTALLIZED BLUE-GREY LIMESTONE NEARLY DEVOID OF FOSSILS, HOST ROCK TO MAJORITY OF SULFIDE ORE BODIES; LOWER FOSSILIFEROUS LS (CRET), ESSENTIALLY A SINGLE MASSIVE WHITE LIMESTONE BED CONTAINING CHERT LENSES AND ABUNDANT PELECYPOD FOSSILS, HOST ROCK FOR MAJOR MANTO AND CHIMNEY ORES; MIDDLE FOSSILIFEROUS LS (CRET), SHALEY, COMPACT, MED-BEDDED LIMESTONE WITH NODULAR CHERT HORIZONS, HOST ROCK FOR CHIMNEY MINERALIZATION BUT UNFAVORABLE TO MANTO FORMATION; UPPER FOSSILIFEROUS LS (CRET), SERIES OF RECRYSTALLIZED DARK-LIGHT GREY LIMESTONE BEDS INTERLAYERED WITH BEDDED CHERT, BASE OF THIS UNIT CONTAINS LONGEST MANTOS IN THE DISTRICT; BASAL CONGLOMERATE (TERT), ROUNDED LIMESTONE COBBLES WITH MINOR ANDESITIC VOLCANIC FRAGMENTS, HOSTS ORE GRADE MINERALIZATION IN THE SAN ANTONIO MINE; VOLCANIC CAPPING SECTION (TERT) CONSISTS OF LITHIC ANDESITE TUFF AND RHYOLITIC WELDED TUFF UNITS OVERLAIN BY A SERIES OF
  • INTERBEDDED CONGLOMERATES, RHYOLITE TUFFS AND VOLCANICLASTIC SEDIMENTS. OVERLYING VOLCANIC UNITS ARE CUT BY QUARTZ-FLUORITE-BARITE VEINS CONTAINING GALENA AND PYRITE IN SUBECONOMIC AMOUNTS. CALCAREOUS HOST ROCKS ARE CUT BY DIKES AND SILLS OF DOLERITE AND MICRO-DIORITE. DETAILED DISCUSSION IN MALDONADO E., AND MEGAW, 1983, AND OTHER REFERENCES BY MEGAW, HEWILL, ETC.
  • PREDOMINANTLY SEDIMENTARY ROCKS OF MIOGEOSYNCLINAL TYPE. ASSOCIATED GRANITIC INTRUSIVE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Comments on the production information

  • TOTAL ESTIMATED TONNAGE OF ORE: 37 MILLION MT AVERAGING 10.7 OZ/MT AG, 8.4% PB AND 7.2% ZN. AN ADDITIONAL 10 MILLION MT OF ORE WITH SIMILAR GRADE WAS PROBABLY PRODUCED BUT NOT RECORDED.TOTAL TONAGE AS OF 1986 IS 38,500,000 TONS OF ORE 395,000,000 TROY OUNCES ( OR 12,280 M TONS) SILVER ( GRADING 318 G/M TON), 2,775,000 M TONS OF PB (PB GRADES 8.8% ) 1908000 M TONS OF ZN ( ZN GRADES 7.3%), 4,000 M TONS TIN (1.5% TIN), 7,000 TONS CU PRODUCED CU GRADES 0.3% IN THE ORE.

Comments on the workings information

  • SULFIDE ORES PROCESSED AT 1000 TPD MILL, (A1984). UNDERGRUOND FOLLOWING SAME ORE ZONE BOTH SIDES OF THE RANGE BOTH MINES COULD POTENTIALLY MEET AT DEPTH.

Comments on development

  • DISCOVERED A1591 BUT NO DENOUNCEMENTS OR PRODUCTION RECORDED UNTIL 1707. OXIDIZED AG-RICH ORE BODIES MINED BY SPANISH COLONIAL OPERATORS, 1707-1790. DISTRICT RELATIVELY INACTIVE, 1790-1880. POTOSI MINING CO. (NOW MINERALES NACIONALES DE MEXICO) AND ASARCO MEXICANA (NOW INDUSTRIAL MINERA MEXICO) ENTERED DISTRICT IN 1880. FIRST SELECTIVE FLOTATION PLANT BUILT IN 1925. SULFIDE ORE PRODUCTION, 1925-PRESENT. PRODUCTION WAS IN EL POTOS; IN 1623

Reference information

General comments

Subject category Comment text
Deposit CURRENT (A1984) PRODUCTION FROM SAN ANTONIO MINE (2100 FT DEEP) AND BUENA TIERRA MINE (2800 FT DEEP). PHILIP ARGALL, 1903, DESCRIBED THE MINES, DISTRICTS , GEOLOGY, AND MINING HISTORY (IN GRIGGS, 1907) VARIOUS IDEAS ABOUT FORMATION OF DEPOSITS(P. 39-46). IN GRIGGS, 1907. AZTECS AND SPANIARDS FIRST WORKED THE MINES. EL SORQUERO AG-AU MINE GROUP INCLUDES LA JOSE FINA, LAS CAROLINAS, LA ENRIQUETA. THE PERUNA MINE GROUPINCLUDES EL CHIRIBEL, EL PIRINEOS, LAS ESTRELLAS, AND LA PERUANA. THE MINES WERE CONSOLATED INTO TWO MINES TEH EL POTOSI AND SAN ANTIONO (EAST AND WEST) DISTRICTS IN THEW 1970'S AND FUNCTION SUCH IN 1991. SEE THE 1:50,000 GEOLOGIC MAP FOR PERCISE LOCATIONS OF OVER 75 PROSPECTS AND 2 MINE AREAS. EAST CAMP HAS SN, NONE IN WEST CAMP. SANTA EULALIA DISTRICT MINES: ABUNDANCIA, PERU, AGUADO, POTOSI EL, AMPLIACION, PRIETA, BOLIVIA, QUINCE, BUENA TIERRA, DE MAYO, CABELLO EL, SAN ANTINIO, EL CARMEN, SAN GREGORIO, LA CENTRAL, SAN JOSE, COCINERAS, SAN MATIAS, EL CRISTO, SAN
Deposit TROY, DOLORES, SANTA ANA, FLORENCIA, SANTA GERTRUDIS, INGALATERRA, SANTA JULIANA, MARGARITE, SANTA RITA, MERCEDES, SANTO DOMINGO, MINA NUEVA, SIERRA, MINA VIEGA, VELARDENA, PARCIONERA. ; INFO.SRC : 1 PUB
Deposit DISTRICT CONSISTS OF TWO MAIN MINERALIZED ZONES: THE EAST CAMP (SAN ANTONIO MINE), AND THE WEST CAMP (BUENA TIERRA AND EL POTOSI MINES). THE TWO AREAS ARE SEPARATED BY A6 KM OF APPARENTLY BARREN GROUND. MINERALIZATION IS DOMINANTLY IN THE FORM OF MANTO AND CHIMNEY REPLACEMENT BODIES IN LIMESTONE, WITH SIGNIFICANT SKARN ORES IN THE EAST CAMP. WEST CAMP OREBODIES OCCUR IN A GENTLY WARPED ZONE OVER A VERTICAL DISTANCE OF 1000 M. ONE OF THE MAJOR 20 DISTRICTS OF MEXICO. IMPORTANT DIFFERENCES TIN ONLY IN E CAMP.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-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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