| Deposit ID | 10221493 |
|---|---|
| MRDS ID | M060191 |
| MAS/MILS ID | 0300930034 |
| Record type | Site |
| Current site name | Norwich |
| Alternate or previous names | Norwich-Plutus, Plutus |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -112.58059, 46.0193 (WGS84) |
| Elevation | 1744 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Silver Bow(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Butte North(quadrangle 1:24,000 scale)
Butte North(quadrangle 1:100,000 scale)
Butte(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Clark Fork(hydrologic unit)
Pend Oreille(hydrologic accounting unit)
Kootenai-Pend Oreille-Spokane(hydrologic subregion)
Pacific Northwest(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Montana | Silver Bow |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 003 N | 008 W | 10 | SWSWSE | Montana |
| Commodity | Importance |
|---|---|
| Manganese Critical | Tertiary |
| Silver | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Unknown |
| Chalcopyrite | Unknown |
| Freibergite | Unknown |
| Galena | Unknown |
| Molybdenite | Unknown |
| Pyrargyrite | Unknown |
| Pyrite | Unknown |
| Pyrolusite | Unknown |
| Quartz | Unknown |
| Rhodochrosite | Unknown |
| Silver | Unknown |
| Sphalerite | Unknown |
| Stromeyerite | Unknown |
| Wad | Unknown |
| Main Entrance (1) | -112.58059, 46.0193 |
|---|
| Strike | N80E | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 55S | ||||||||||||||||||||||||||||||||
| Thickness | 6M | ||||||||||||||||||||||||||||||||
| Length | 91M | ||||||||||||||||||||||||||||||||
| Width | 73M | ||||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| Area | 0.74HA | ||||||
|---|---|---|---|---|---|---|---|
| |||||||
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Year of first production | 1917 |
| District name | Butte District |
|---|
| Type of mineral rights | Patented |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Anaconda Co. |
| Interest | 100 |
| Home office | New York |
| Year | 1976 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0300930034 | |
| USGS | Mineral Resources Data System | MRDS | M060191 | MAS references MRDS |
AU-NGOC-HO,1957,GEOL & ORE DEP,NORWICH MINE,MSTHESIS MT TECH
COLE,1951,INV NORWICH MAN.DEP.USBM RPT INV.4784
ALLSMAN,1955,OXIDAT.& ENRICH MANG DEPS BUTTE DIST MSTHESIS M
SCHEITLIN,1955,PARAGENESIS ORE NORWICH MINE BS THESIS MT TEC
ROMISCHER & PRINZ 1959 UNPUB RPT CONTRACT IDM-E604 USBM
MCNABB NO DATE,ADDENDUM TO CONFID. SECT RI 4784 UNPUB
COLE NODATE CONFID SECT INVEST NORWICH MN MINE USBM UNPUB
ANON,NODATE,NORWICH-PLUTUS-LITTLE SARAH UNPUB USBM RPT
ALLSMAN 1955 OXID & ENRICH MN DEPS UNPUB MSTHESIS MTSCHMINES
SCHEITLIN 1955 PARAGENESIS PRIM. ORE NORWICH UNPUBTHESIS MTT
| Subject category | Comment text |
|---|---|
| Deposit | THE NORWICH IS ONE OF 39 BUTTE MN DEPOSITS. A COMPLETE EVALUATION OF THE MN DISTRICT IS AVAILABLE UNDER SEQ NO. 0300930224. THE TONNAGE PRESENT IN THE NORWICH WAS NOT USED IN THE PROPOSED DEVELOPMENT OF BUTTE MN BECAUS OF INSUFFICIENT ASSAY DATA ON PRIMARY COPRODUCTS (ZN,PB AG). FURTHER INVESTIGATION IS ADVISED. EXTENDS WEST INTO THE MAPLETON CLAIM AND POSSIBLY FARTHER INTO THE GREAT REPUBLIC CLAIM. THE NORWICH VEIN ENDS TO THE EAST AGAINST THE EXTENSIVE RHYOLITE OUTCROP THAT SURROUNDS BIG BUTTE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 27-FEB-84 | Wetzel, Nicholas | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.