Black Hawk Group

Past Producer in Pima county in Arizona, United States with commodity Manganese
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. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10039687
MRDS ID M050654
Record type Site
Current site name Black Hawk Group
Alternate or previous names Black Hawk No. 1, 2, and 3, Black Eagle Nos. 1 and 2, Blue Devil Nos.1 & 2
Related records 10234423

Geographic coordinates

Geographic coordinates: -111.60376, 32.03012 (WGS84)
Relative position ABOUT 2.75 MILES NORTHWEST OF INDIAN HAMLET OF PANTAK; NORTH WEST OF COYOTE MOUNTAINS.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pan Tak(quadrangle 1:24,000 scale)

Silver Bell Mountains(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Aguirre Valley(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(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 016S 007E 14 SE4 Arizona

Commodities

Commodity Importance
Manganese Critical Primary

Comments on the commodity information

  • PROBABLY ON SAME FRACTURE ZONE AS JEAN E GROUP.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -111.60376, 32.03012

Economic information

Geologic structures

Type of structure Local
Structure description Northwest Trending Fracture Zone.

Ore body information

  • General form IRREGULAR VEINLETS IN FRACTURE ZONE
    Strike N50 TO 60 W
    Dip VERTICAL TO STEEP NE.
    Length 137.16M
    Width 91.44M

Controls for ore emplacement

  • Fracture Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1940
Discoverer Geo. M. Evans And Assoc.
Year of first production 1955
Production years 1955

Production statistics

  • Year 1955
    Material MN
    Accuracy Accurate
    Description Ap_Grade: ^20% Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Manganese Manganese 20wt-pct

Comments on the production information

  • TRUCKED TO DEMING PURCHASING DEPOT EARLY IN 1955

Comments on the workings information

  • AT LEAST 15 PITS AND CUTS; A FEW PITS WERE 10 TO 18 FT. DEEP.

Reference information

Bibliographic references

  • Deposit

    FARNHAM, STEWART AND DE LONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM IC 7990.

  • Deposit

    NOWLAN, G.A., HAXEL, G.B., HANNA, W.F., PITKIN, J.A., DIVELEY-WHITE, D.V., MCDONNELL, J.R., JR., AND LUNDBY, WILLIAM, 1989, MINERAL RESOURCES OF THE BABOQUIVARI PEAK AND COYOTE MOUNTAINS WILDERNESS STUDY AREAS, PIMA COUNTY, ARIZONA: U.S. GEOLOGICAL SURVEY BULLETIN 1702, 30 P.

  • Deposit

    1955 DIREXPL DRAKE MINING CO; MINED ORE

  • Deposit

    FARNHAM, STEWART AND DELONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA; USBM IC 7990

  • Deposit

    1956 RECON U.S.B.M. IC 7990

  • Other Database

    CIMRI

  • Production

    USBM IC 7990

General comments

Subject category Comment text
Deposit TWO PARALLEL FRACTURE ZONES 300 FT. APART, CONTAINING DISCONTINUOUS, NARROW STRINGERS OF HARD MANGANESE OXIDES IN MOST FRACTURE PLANES, WHICH SHOW GRADUAL REPLACEMENT OUTWARD FROM THE WALLS AND INCOMPLETE REPLACEMENT OF SOFTER WAD MANGANESE IN SHATTERED AREAS BETWEEN FRACTURES.
Deposit FRACTURE ZONE PROBABLY EXTENDS TO EAST WHERE IT IS COVERED BY ALLUVIUM; SIMILIARITY OF MINERALS AND THE TREND OF FRACTURES SUGGEST THAT BLACK HAWK AND JEAN E ARE ON SAME FRACTURE ZONE. ; 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-1992 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.