Gillespie Farm Diggings

Past Producer in Jackson county in Iowa, United States with commodity Lead
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10082001
MRDS ID W044491
Record type Site
Current site name Gillespie Farm Diggings

Geographic coordinates

Geographic coordinates: -90.87013, 42.20168 (WGS84)

Site location context

Political divisions (FIPS codes)

Jackson(county)

Iowa(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Leisure Lake(quadrangle 1:24,000 scale)

Dubuque South(quadrangle 1:100,000 scale)

Dubuque(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Maquoketa(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 Iowa Jackson

Commodities

Commodity Importance
Lead Primary

Materials information

Materials Type of material
Galena Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Stratigraphic age (youngest) Late Silurian

Nearby scientific data

(1) -90.87013, 42.20168

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    F1 < TABOR, 1969, U.S. MAILMAN, BALWIN, IA, ORAL COMMUNICATION TO A. V. HEYL

General comments

Subject category Comment text
Deposit GEN<LEAD DIGGINGS LOCATED ON THIS FARM. A "CAVE" WAS MINED FOR LEAD ALONG THE NORTH FORK OF THE MAQUOKETA RIVER NORTHEAST OF THE FARM. CADASTRAL LOCATION: NW 1/4 SEC. 5, T. 85 N., R. 1 E. ; INFO.SRC : COBB

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1985 Miller, M. U.S. Geological Survey

Beyond USGS

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