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  3. Mineral Resource Data System (MRDS)

Black Horse Mine

Past Producer in Pima county in Arizona, United States with commodity Copper
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  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 10103732
MRDS ID M050034
Record type Site
Current site name Black Horse Mine

Geographic coordinates

Geographic coordinates: -110.76624, 31.86263 (WGS84)
Elevation 1463
Relative position 28 MILES SE OF TUCSON.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helvetia(quadrangle 1:24,000 scale)

Fort Huachuca(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 18S 15E 13 Arizona

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • CHALCOCITE PROBABLY SECONDARY AFTER CHALCOPYRITE AND PYRITE.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Quartz Latite 56 My +-2 My Quartz Latite.;Granodiorite Porph 1450+-10my Granodiorite
    Rock description Quartz Latite 56 My +-2 My Quartz Latite.;Granodiorite Porph 1450+-10my Granodiorite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Horquilla Limestone Limestone.;Martin Formation Limestone
    Rock description Horquilla Limestone Limestone.;Martin Formation Limestone

Nearby scientific data

(1) -110.76624, 31.86263
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Thrust And Normal Faulting - Fracture Zones.
Type of structure Regional
Structure description Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N.

Ore body information

  • Strike N-S
    Dip VERT
    Width 7M

Controls for ore emplacement

  • Ore Generally In Lime-Silicate Zones Controlled By Faults And Fractures.

Comments on the geologic information

  • AGE OF MINERALIZATION BELIEVED TO BE THAT OF DREWES, 1971 ; REG.COM: STRUCTURE IN DISTRICT IS THRUST FAULTING - HIGH ANGLE NORMAL FAULTING AND FOLDING.

Economic information about the deposit and operations

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

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category National Forest

Comments on the production information

  • UNKNOWN PRODUCTION.

Workings at the site

  • Type of workings Underground
    Length 121.92M
    Overall depth 30.48M

Comments on the workings information

  • DISTRICT IS POSSIBLY NEW PORPH. COPPER DEPOSIT.

Comments on development

  • ANACONDA REPORTS ROSEMONT-HELVETIA INTRUSIVE QUARTZ LATITE AS POTENTIAL PORPH. COPPER DEPOSIT IN 1971

Reference information

Bibliographic references

  • Deposit

    SCHRADER, F. C. 1915 USGS BULL. 582

  • Deposit

    ARIZONA BUREAU OF MINES 1971 FIELDNOTES V. 1 NO. 2

  • Deposit

    DREWES, H. 1971 USGS MAP I-613 (SAHUARITA QUAD)

  • Deposit

    1909 RECON F. C. SCHRADER U.S.G.S. BULL. 582

  • Deposit

    1971 DIREXPL ANACONDA-POSSIBLE NEW PORPH. COPPER DEPOSIT.

  • Deposit

    1971 GEOLMAP H. DREWES U.S.G.S. MAP I-613

General comments

Subject category Comment text
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971 USGS MAP I-613. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Keith, William J. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Arizona resources

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