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Washington

Past Producer in Sonora, Mexico with commodities Copper, Molybdenum, Tungsten, Silver, Gold, Zinc, Lead
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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. Ore body information
  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 10048858
MRDS ID MX00028
Record type Site
Current site name Washington
Related records 10183820

Geographic coordinates

Geographic coordinates: -110.06315, 29.8988 (WGS84)
Elevation 1200
Relative position 125 KM NE OF HERMOSILLO AND 14 KM E OF HUEPAC.

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

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Tungsten Critical Primary
Silver Secondary
Gold Secondary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Molybdenite Ore
Pyrite Ore
Scheelite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Phyllic, Potassic, Local Silicification And Tourmalinization

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -110.06315, 29.8988
ListMap

Economic information

Ore body information

  • General form COLLAPSE BRECCIA
    Plunge 60-90
    Plunge direction SW

Comments on the geologic information

  • TERTIARY ANDESITES, TRACHYTES, AND LATITE FLOWS INTERCALATED WITH THIN LAYERS OF CHERT, CARBONATES AND VOLCANICLASTICS. INTRUDED BY SMALL GRANODIORITE STOCK WITH APOPHYSES OF QUARTZ MONZONITE. HIGH-ANGLE FAULTS CROSSCUT LAYERED VOLCANIC STRATIGRAPHY OF ANDESITIC DACITE OVERLAIN BY A 200-600 M THICK TRACHYTIC ANDESITE LAYER WHICH IN TURN IS OVERLAIN IN SOME AREAS BY ANDESITE FLOWS.

Economic information about the deposit and operations

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

Mining district

District name Hermosillo/Huepac

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 1200000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.71 wt-pct Copper Major 1983
    Molybdenum Mo 0.058 wt-pct Molybdenum Major 1983
    Tungsten Wo3 0.14 wt-pct Tungsten Major 1983
    Silver Ag 15.85 g/mt Silver Minor 1983
    Gold Au 0.172 g/mt Gold Minor 1983
  • Type In-situ
    Estimate year 1985
    Total resources 12000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.8 wt-pct Copper Major 1985
    Molybdenum Mo 0.106 wt-pct Molybdenum Major 1985
    Tungsten Wo3 0.14 wt-pct Tungsten Major 1985
    Silver Ag 15.8 g/mt Silver Minor 1985
    Gold Au 17 g/mt Gold Minor 1985

Comments on the reserve resource information

  • AT WASHINGTON AND SAN LORENZO MINES THERE ARE GOOD POSSIBILITIES FOR MINING BUT NOT YET ECONOMICALLY FEASIBLE.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit OVAL-SHAPED, VERTICALLY PLUNGING COLLAPSE BRECCIA, ABOUT 60 M IN DIAMETER. NNW TRENDING FAULTS FORM CONTACTS AT THE SURFACE AND CROSSCUT THE BRECCIA AT DEPTH. PLUNGE OF THE OREBODY CHANGES TO ABOUT 60 SW AT 200 M DEPTH. UBIQUITOUS CHALCOPYRITE. PYRITE CONTENT DECREASES BELOW 200-FT LEVEL. MOLYBDENITE FOUND ONLY BELOW 400-FT LEVEL.
Deposit REGIONAL LARAMIDE STRATIGRAPHY (LOWER TO UPPER) 1> TRACHYTE SERIES: ANDESITE-TRACHYTE FLOWS SEPARATED BY THIN BEDS OF RECRYSTALLIZED LIMESTONE WITH NARROW BANDS OF MAGNETITE OR BY THICKER MUDSTONE BEDS. HOSTS MOST OF THE KNOWN BRECCIA PIPE MINERALIZATION. 2> LAVA SERIES: TUFF, LATITE PORPHYRY, AND RHYOLITE FLOWS INTERCALATED WITH LIMESTONE, CHERT, AND SANDSTONE. CHARACTERIZED BY MINERALIZED CRACKLE BRECCIA ZONES, BARREN TOURMALINIZED FAULT BRECCIAS AND STRONGLY DEVELOPED GOSSAN ZONES. UNCONFORMABLY OVERLIES TRACHYTE SERIES. 3> TUFF FORMATIONS. 4> RHYOLITIC PLUG AND DIKES. INTRUSIVES: GRANODIORITE STOCK IN TRACHYTE SERIES. NARROW HORNBLENDE-FELDSPAR PORPHYRY AND ALASKITE DIKES IN LAVA SERIES. ; INFO.SRC : 1 PUB

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.

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