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  3. Mineral Resource Data System (MRDS)

La Cruz Mine

Past Producer in Zacatecas, 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. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10050542
MRDS ID MX29002
Record type Site
Current site name La Cruz Mine
Alternate or previous names Mina Mercurio

Geographic coordinates

Geographic coordinates: -103.21711, 23.83376 (WGS84)
Relative position 9 KM E (?) OF SAIN ALTO

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Zacatecas

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Metacinnabar Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -103.21711, 23.83376
ListMap

Economic information

Ore body information

  • General form SHOOTS ()
    Width 1.52M
    Depth to bottom 60.96M

Controls for ore emplacement

  • Ore Defies Gross Structural Control, Cutting Across Bedding And Faults. Hand Specimens Do Show Control In Detail. Veinlets Occur In Joints And Ore Is Generally Beneath Shale Or Fault Gouge.

Comments on the geologic information

  • GEOLOGY HAS BEEN DESCRIBED AS RESEMBLING FRANCISCAN MELANGE

Economic information about the deposit and operations

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

Mining district

District name Sain Alto

Comments on the production information

  • A LEADING PRODUCER IN WORLD WAR II. INTENSIVE MINING BEGAN IN 1938. AVERAGE GRADE OF THE LARGEST SHOOT WAS 10 POUNDS HG/ T. PRODUCTION GIVEN ABOVE IS A MINIMUM.

Comments on the reserve resource information

  • OTHER DEPOSITS MAY BE FOUND ALONG SAME TREND OR IN PARALLEL ANTICLINAL TRENDS.

Workings at the site

  • Type of workings Unknown
    Overall depth 60.96M

Comments on the workings information

  • MINA MERCURIO WAS THE ONLY SIGNIFICANT MINE IN 1959. A FLOTATION PLANT WAS BUILT IN 1941, PRODUCING 250 FLASKS PER MONTH UNTIL 1945.

Reference information

Bibliographic references

  • Deposit

    STORM, L.W., AND RIGBY, J.H., 1942, PRELIMINARY REPORT ON SAIN ALTO DISTRICT, UNPUBLISHED REPORT.

  • Deposit

    BAILEY, 1959, UNPUBLISHED REPORT, USGS.

  • Deposit

    GALLAGHER, D., 1959, UNPUBLISHED NOTES.

  • Production

    BAILEY, UNPUBLISHED REPORT.

  • Reserve-Resource

    STORM AND RIGBY, 1942.

General comments

Subject category Comment text
Deposit IN A ZONE 800 X 200 M TRENDING N 60 E. UNIMPORTANT SILICA-CINNABAR STOCKWORK ALSO OCCURS IN FAULT BRECCIAS OF THE RHYOLITE MTNS NEARBY. THE LARGEST SHOOT IS 5 FT WIDE AND WAS MINED TO 2OO FT DEPTH BUT MAY GO DEEPER. STRIKE LENGTH IS 160 FT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1978 Slagle, Letha P. (Rytuba, 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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