San Marcos

Occurrence in Sonora, Mexico with commodity Iron
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. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10048872
MRDS ID MX00043
Record type Site
Current site name San Marcos
Related records 10279585

Geographic coordinates

Geographic coordinates: -109.40062, 28.7794 (WGS84)
Relative position 10KMS SE OF CUESTA DE FIERRO.

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 15 SECONDS.; PREVIOUS QUAD DESIGNATION = TECORIPA 1:250000

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • 32.97% MAG, 61.30% FE SOL, 2.00% FE ++, .032% S IN MAG, .180% MGO, .416% TIO2, .078% CU.

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Calcite Gangue
Epidote Gangue
Garnet Gangue
Plagioclase Gangue

Analytical data

Result 61.60% TOTAL FE, 2.00% SILICA, 0.040% TOTAL S, TR. CAO, 0.010% P, 1.332% MN
Result CABRERA, ET.AL., 1983, TABLE IV.

Mineral occurrence model information

Model code 62
USGS model code 18d
Deposit model name Skarn Fe

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -109.40062, 28.7794

Economic information

Geologic structures

Type of structure Regional
Structure description Roof Pendant

Controls for ore emplacement

  • Contact With Roof Pendant

Comments on the geologic information

  • FIELD OBSERVATIONS BY CABRERA AND OTHERS DURING FIELDWORK PRIOR TO 1984 SUGGEST AN ABUNDANCE OF MAGNETITE ALTHOUGH THE ASSAY SHOWS ONLY 32.9%.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Tecoripa

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 5000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 62 wt-pct Iron Major 1983

Comments on the reserve resource information

  • INFERRED RESERVES.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit FE SKARN IN ROOF PENDANT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-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.