| Deposit ID | 10086387 |
|---|---|
| MRDS ID | W800307 |
| Record type | Site |
| Current site name | Rockford Mining and Milling Co. Mine |
| Geographic coordinates: | -90.239, 42.44807 (WGS84) |
|---|
Political divisions (FIPS codes)
Jo Daviess(county)
Illinois(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Scales Mound East(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)
| Country | State | County |
|---|---|---|
| United States | Illinois | Jo Daviess |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 28N | 2E | 1 | NW OF SW | Illinois |
| Commodity | Importance |
|---|---|
| Lead | Primary |
| Zinc Critical | Primary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Sphalerite | Ore |
| Calcite | Gangue |
| Dolomite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Model code | 224 |
|---|---|
| USGS model code | 32a |
| Deposit model name | Mississippi Valley, S.E. Missouri Pb-Zn |
| Mark3 model number | 42 |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite | ||||
| Rock unit name | Stewartville Massive Member | ||||
| Rock description | Stewartville Massive Member | ||||
| |||||
| (1) | -90.239, 42.44807 |
|---|
| 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. |
| Commodity type | Metallic |
|---|---|
| Significant | No |
| Year of first production | 1905 |
| Year of last production | 1915 |
| District name | Upper Mississippi Valley |
|---|
| Type of workings | Underground |
|---|---|
| Name of workings | SHAFT |
| Type of workings | Underground |
|---|---|
| Name of workings | SHAFT |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W800307 |
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
| 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. |
| 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 |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.