| Deposit ID | 10310026 |
|---|---|
| MRDS ID | LW00026 |
| Record type | Site |
| Current site name | Rockwood Plant |
| Geographic coordinates: | -83.22098, 42.0564 (WGS84) |
|---|---|
| Location accuracy | 100(meters) |
| Relative position | ABOUT 1 MILE SOUTHEAST OF THE TOWN OF ROCKWOOD, LAT/LONG IS BASED ON CENTER OF SW 1/4 |
Political divisions (FIPS codes)
Wayne(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Rockwood(quadrangle 1:24,000 scale)
Detroit(quadrangle 1:100,000 scale)
Detroit(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
St. Clair-Detroit(hydrologic accounting unit)
St. Clair-Detroit(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Wayne |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Michigan | 05S | 10E | 14 | SW 1/4 | Michigan |
| Commodity | Importance |
|---|---|
| Silica | Primary |
| Materials | Type of material |
|---|---|
| Quartz | Ore |
| Dolomite | Gangue |
| Model code | 207 |
|---|---|
| USGS model code | 30e |
| Deposit model name | High-grade silica deposits |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone | ||
| Rock unit name | Sylvania Formation | ||
| Rock description | Sylvania Formation | ||
| |||
| (1) | -83.22098, 42.0564 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Michigan basin |
| Type of structure | Local |
| Structure description | Relatively flat lying |
| Name | SYLVANIA SANDSTONE |
|---|---|
| General form | BLANKET |
| Operation type | Surface |
|---|---|
| Development status | Producer |
| Significant | Yes |
| District name | Rockwood |
|---|
| Type | Owner |
|---|---|
| Owner | U.S. Silica Company |
MICHIGAN'S INDUSTRIAL SAND RESOURCES, 2000, CIRCULAR 11, GEOLOGICAL SURVEY DIVISION, LANSING, MICHIGAN.
HEINRICH, E.W, 1979, ECONOMIC GEOLOGY OF THE SAND AND SANDSTONE RESOURCES OF MICHIGAN, GEOLOGICAL SURVEY DIVISION, LANSING, MICHIGAN.
U.S. SILICA COMPANY WEB PAGE, http://www.u-s-silica.com/rockwood.html
| Subject category | Comment text |
|---|---|
| Deposit | THE SYLVANIA SANDSTONE APPEARS AS A NORROW NE-SW STRIP ACROSS THE SOUTHEASTERN CORNER OF MICHIGAN AND EXTENDING SOUTHWARD INTO NORTHERN OHIO. SOUTH OF DETROIT IT UNDERLIES THE DETROIT RIVER AND IN THE SUBSURFACE IT EXTENDS BARELY INTO THE SOUTHWESTERNMOST CORNER OF ONTARIO. |
| Deposit | UNIQUE WHITE SANDSTONE CONSIST OF SMALL GRAINS OF SILICA SMALLER THAN DUNE SAND. VERY FEW IMPURITIES ARE PRESENT. IS USED PRINCIPALLY FOR MAKING GLASS. MAINLY ORTHOQUARTZITIC SAND BODY. FORMS THE BASE OF THE DETROIT RIVER GROUP. VERY LOW ANGLE DIP NORTHWESTWARD TOWARD THE CENTER OF MICHIGAN BASIN. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 12-SEP-01 | Anderson, Arlene (M. Gere) | Michigan Department of Natural Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Active since 10/06/1977 |
|---|---|
| MSHA mine ID | 2000608 |
| Mine name (MSHA) | Rockwood Plant |
| Current operator | U S Silica Company |
| Current controller (parent) | USS Holdings Inc |
| Mine type | Surface (Metal / non-metal) |
Inferred by coordinate + name similarity (1965 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.