Main Baldwin Diggings

Past Producer in Jackson county in Iowa, United States with commodity Lead

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Host and associated rocks
Nearby scientific data
Economic information about the deposit and operations
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10082002
MRDS ID	W044492
Record type	Site
Current site name	Main Baldwin Diggings

Geographic coordinates

Geographic coordinates:	-90.84096, 42.0789 (WGS84)

Site location context

Political divisions (FIPS codes)

Jackson(county)

Iowa(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Baldwin(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

Rock unit name

Hopkinton Dolomite

Rock description

Hopkinton Dolomite

Stratigraphic age (youngest)	Late Silurian

Nearby scientific data

(1)	-90.84096, 42.0789	ListMap

Economic information

Comments on the geologic information

N85<A LITTLE GALENA, LIMONITE, AND CALCITE ARE PRESENT IN SILURIAN HOPKINTON DOLOMITE.

Economic information about the deposit and operations

Development status	Past Producer
Commodity type	Metallic
Significant	No

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	W044492

Bibliographic references

Deposit

F1 < OWEN, D. D., 1844, REPORT OF A GEOLOGICAL EXPEDITION OF A PART OF IOWA, WISCONSIN, AND ILLINOIS IN 1839: U.S. 28TH CONGRESS, FIRST SESSION, SENATE EXECUTIVE DOCUMENT V. 7, NO. 407, 191 P., MAPS.
Deposit

HEYL, A. V., FIELD NOTES

General comments

Subject category	Comment text
Deposit	GEN<VERY OLD LEAD DIGGINGS; REGARDED AS "UNIMPORTANT" BY OWEN (1844). CADASTRAL LOCATION: SEC. 15 AND 16, T. 84 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.