San Juan Mine

Past Producer in Pima county in Arizona, United States with commodity Tungsten
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10039477
MRDS ID M050139
Record type Site
Current site name San Juan Mine
Related records 10137859

Geographic coordinates

Geographic coordinates: -111.67153, 31.91345 (WGS84)
Elevation 1052
Relative position ABOUT 0.5 MILE SOUTH OF SAN JUAN SPRING.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Juan Spring(quadrangle 1:24,000 scale)

Sells(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Simon Wash(hydrologic unit)

Rio Sonoyta(hydrologic accounting unit)

Sonora(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 017S 007E 30 Arizona

Comments on the location information

  • UNSURVEYED; LOCATION PROJECTED BY U.S.B.M ON SKETCH MAP.

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore

Alteration

  • (Local) Argillaceous Alteration Products

Analytical data

Result IN 1953 7 SAMPLES CUT ACROSS WIDTH OF THE VEIN FOR 300 FEET LENGTH AVERAGED 0.34 PERCENT W03. THESE WERE TAKEN OVER VEIN WIDTHS RANGING FROM 0.9 TO 14 FEET AND AVERAGED 4.5 FEET

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -111.67153, 31.91345

Economic information

Geologic structures

Type of structure Local
Structure description Fault Zone

Ore body information

  • General form LENS/DISCONTINUOUS BAND
    Strike NE
    Dip 45SE
    Length 152.4M
    Width 1.22M

Controls for ore emplacement

  • Fault Zone

Comments on the geologic information

  • QUARTZITIC ROCK METAMORPHOSED TO HORNFELS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1951
Discoverer Wm. H. Coplen
Year of first production 1952
Production years 1952-57

Comments on the production information

  • PRODUCTION BY COPLEN 1954-56 AMOUNTED TO ABOUT $21,000 AND BY MOUNTAIN STATES URANIUM CO IN 1957 TO ABOUT $7,500

Workings at the site

  • Type of workings Surface/Underground
    Length 44.2M
    Overall depth 15.24M
    Overall length 13.72M

Comments on the workings information

  • 2 SHAFTS; MOST ORE FROM NORTH SHAFT AND DRIFT ON 32-FOOT LEVEL.

Reference information

Bibliographic references

  • Deposit

    DALE, STEWART, AND MCKINNEY, 1960, TUNGSTEN DEPOSITS OF COCHISE, PIMA, AND SANTA CRUZ COUNTIES, ARIZ.: U.S.B.M. R.I. 5650.

  • Deposit

    KEITH, S., 1974, INDEX OF MINING PROPERTIES OF PIMA COUNTY, ARIZONA: ABM BULLETIN 189.

  • Deposit

    1957 RECON USBM RI 5650

  • Deposit

    DALE, STEWART, AND MCKINNEY, 1960, TUNGSTEN DEPOSITS OF COCHISE, PIMA AND SANTA CRUZ COUNTIES: U.S. BUREAU OF MINES, R.I. 5650

  • Other Database

    CIMRI

  • Production

    DALE, ETAL, 1960, USBM RI 5650

General comments

Subject category Comment text
Deposit DIP VARIES FROM 30 TO 60 SE.
Deposit THIS RECORD CONTAINS INFORMATION FROM DUPLICATE RECORD D000818 OF JAMES E. ELLIOT WHICH HAS BEEN DELETED FROM MRDS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1972 Johnson, Maureen G. U.S. Geological Survey
Updater 01-DEC-1993 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.