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Jean E Group

Past Producer in Pima county in Arizona, United States with commodities Manganese, Copper, Zinc
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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. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10039688
MRDS ID M050655
Record type Site
Current site name Jean E Group
Alternate or previous names Black Bear Nos. 1 and 2
Related records 10234993

Geographic coordinates

Geographic coordinates: -111.59792, 32.02901 (WGS84)
Elevation 960
Relative position 2.5 MILES NORTHWEST OF INDIAN HAMLET OF PANTAK, NORTHWEST 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 13 SW4 Arizona

Commodities

Commodity Importance
Manganese Critical Primary
Copper Tertiary
Zinc Critical Tertiary

Comments on the commodity information

  • CU, ZN OCCUR IN NEARBY SHAFT; ORE HAS LOW IRON CONTENT.

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) -111.59792, 32.02901
ListMap

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 N 50 DEG. TO 60 DEG. W.
    Dip STEEPLY NORTHEAST
    Width 121.92M

Controls for ore emplacement

  • Northwest Trending Fracture Zone And Northeast Trending Fault.

Comments on the geologic information

  • GEOL.DESC: PROBABLY SIZEABLE PODS OF MANGANESE ORE WAS MINED FROM INTERSECTION OF N80E FAULT AND NW FRACTURE ZONE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1938
Discoverer A.M. Herreras
Year of first production 1954
Production years 1954-1956 (?)

Production statistics

  • Year 1956
    Period 1954 - 1956?
    Material MN
    Accuracy Accurate
    Description Cp_Grade: ^Conc. Avg. 43.5 % Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Manganese Manganese 44wt-pct

Comments on the production information

  • CONCENTRATED IN JIG PLANT AT TUCSON AND CONCENTRATE TRUCKED TO DEMING PURCHASING DEPOT.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 12.19M
    Overall length 33.53M
    Overall width 9.14M

Comments on the workings information

  • PROPERTY IS MOSTLY DEVELOPED BY OPEN CUTS AND PITS; A FEW SHAFTS ARE FOUND.

Reference information

Bibliographic references

  • Deposit

    FARNHAM, STEWART AND DE LONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM I.C. 7990, P. 115 - 116.

  • 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

    FARNHAM, L.L., STEWART, L.A., AND DE LONG, C.W., 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: U.S. BUREAU OF MINES INFORMATION CIRCULAR IC 7990, 178 P..

  • Deposit

    1941 DIREXPL U.S. BUREAU OF MINES, TRENCHING PROGRAM

  • Deposit

    1956 RECON U.S. BUREAU OF MINES;IC 7990

  • Deposit

    1954 DIREXPL DRAKE MINED ORE

  • Other Database

    CIMRI

  • Production

    USBM IC 7990; NOWLAN AND OTHERS, 1989.

General comments

Subject category Comment text
Deposit NUMEROUS FRACTURES IN ZONE CONTAIN NARROW, DISCONTINUOUS, HIGH-GRADE VEINLETS OF HARD MANGANESE OXIDES WITH OCCASIONAL REPLACEMENTS OF SOFTER WAD MANGANESE IN SHATTERED AREAS BETWEEN FRACTURES.

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.

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.