Hughlett and Gray Mine

Past Producer in Jo Daviess county in Illinois, United States with commodities Zinc, Lead
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. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10086155
MRDS ID W800005
Record type Site
Current site name Hughlett and Gray Mine

Geographic coordinates

Geographic coordinates: -90.40428, 42.49751 (WGS84)
Relative position 6 MI N OF GALENA

Site location context

Political divisions (FIPS codes)

Jo Daviess(county)

Illinois(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Galena(quadrangle 1:24,000 scale)

Dubuque South(quadrangle 1:100,000 scale)

Dubuque(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Apple-Plum(hydrologic unit)

Upper Mississippi-Maquoketa-Plum(hydrologic accounting unit)

Upper Mississippi-Maquoketa-Plum(hydrologic subregion)

Upper Mississippi(hydrologic region)

Geographic areas

Country State County
United States Illinois Jo Daviess

Comments on the location information

  • AT THE EAST END OF THE SAME ORE BODY IN WHICH THE SOUTH UNITY MINE IS LOCATED.

Commodities

Commodity Importance
Zinc Critical Primary
Lead Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Calcite Gangue
Dolomite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Leaching, Silicification, Dolomitization

Mineral occurrence model information

Model code 224
USGS model code 32a
Deposit model name Mississippi Valley, S.E. Missouri Pb-Zn
Mark3 model number 42

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Guttenberg Member, Decorah Formation;Prosser Cherty Member, Galena Dolomite
    Rock description Guttenberg Member, Decorah Formation;Prosser Cherty Member, Galena Dolomite

Nearby scientific data

(1) Galena Group (Trenton Limestone)

Economic information

Geologic structures

Type of structure Regional
Structure description Southeast Of Wisconsin Dome And On The Gentle West Limb Of Wisconsin Arch. To The South Is Illinois Basin And To The West And Southwest Is Forest City Basin. A Few Minles South O Fthe Zinc-Lead District Is Westward-Trending Savanna-Sabula Anticline. Regional Strike Is N 85 W And The Dip Is South.
Type of structure Local
Structure description On The Same Syncline That Contains The Northwestern, Vinegar Hill, South Unity, Hughlett And Gray, And North Unity Mines.

Ore body information

  • Thickness 10.67M
    Width 30.48M

Comments on the geologic information

  • THE ORE BODY CONTAINS TYPICAL VEIN ORE ALONG PITCHES AND FLATS. IT IS QUITE RICH IN PLACES AND CONTAINS CONSIDERABLE QUANTITIES OF GALENA AND A VERY LITTLE CHALCOPYRITE. THE ORE BODY IS 30 T 35 FT THICK.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1919
Year of first production 1919
Year of last production 1943
Production years 1919-21; 1941-43

Mining district

District name Upper Mississippi Valley

Ownership information

  • Type Operator
    Owner Vinegar Hill Mining Co.; Gill Brothers
  • Type Owner
    Owner On The Ensch Farm

Comments on the production information

  • OPERATION WAS INTERMITTENT FROM 1919-1943.

Workings at the site

  • Type of workings Underground
    Name of workings SHAFT
    Overall depth 45.72M
    Overall length 1097.28M
    Overall width 30.48M

Comments on the workings information

  • THE SHAFT REACHED THE BASE OF THE GUTTENBERG MEMBER OF THE DECORAH FM.

Comments on development

  • ECON.COM: THE POSSIBILITY OF FINDING ADDITIONAL ORE WAS NOT ENCOURAGING.

Reference information

Bibliographic references

  • Deposit

    HEYL, A.V., AGNEW, A.F., LYONS, E.J., AND BEHRE, C.H., JR., 1959, THE GEOLOGY OF THE UPPER MISSISSIPPI VALLEY ZINC-LEAD DISTRICT: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 309, 310 P.

  • Deposit

    WILLMAN, H.B., REYNOLDS, R.R., AND HERBERT, PAUL, JR., 1946, GEOLOGICAL ASPECTS OF PROSPECTING AND AREAS FOR PROSPECTING IN THE ZINC-LEAD DISTRICT OF NORTHWESTERN ILLINOIS: ILLINOIS GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS, NO. 116, 48 P.

  • Production

    HEYL AND OTHERS, 1959, P. 184.

General comments

Subject category Comment text
Deposit THE UPPER MISSISSIPPI VALLEY ZINC-LEAD DISTRICT LIES WITHIN THE SO-CALLED DRIFTLESS AREA WHERE NO MANTLE OF GLACIAL DRIFT IS PRESENT TO OBSCURE THE ROCK EXPOSURES. NATURAL CAVES ARE COMMON IN THE DISTRICT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1994 Hedgman, Cheryl (Cannon, W.F.) U.S. Geological Survey
Updater 01-MAY-1996 Sutphin, David M. U.S. Geological Survey
Editor 01-MAY-1997 Mason Jr., G.T. U.S. Geological Survey

Beyond USGS

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