| Deposit ID | 10207613 |
|---|---|
| MRDS ID | W028269 |
| MAS/MILS ID | 7910050059 |
| Record type | Site |
| Current site name | Bishop |
| Related records | 10079221, 10207629, 10280817, 10207741 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | 22.83482, -27.16332 (WGS84) |
| Elevation | 1200 |
Political divisions (FIPS codes)
South Africa(country)
Africa(continent)
Land(continent)
| Country |
|---|
| South Africa |
| Commodity | Importance |
|---|---|
| Iron | Tertiary |
| Manganese Critical | Primary |
| Phosphorus-Phosphates | Tertiary |
| Silica | Tertiary |
| Materials | Type of material |
|---|---|
| Bixbyite | Unknown |
| Braunite | Unknown |
| Hausmanite | Unknown |
| Jacobsite | Unknown |
| Manganite | Unknown |
| Psilomelane | Unknown |
| Pyrolusite | Unknown |
| Ore Body (1) | 22.83482, -27.16332 |
|---|
| |||||||||||||||||||||
| Operation type | Surface |
|---|---|
| Development status | Past Producer |
| Commodity type | Both |
| Deposit size | Large |
| Significant | No |
| Discovery year | 1922 |
| Year of first production | 1930 |
| District name | Postmasburg |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Associated Manganese Mines Of South Africa, Ltd. (Ammosal) |
| Interest | 100 |
| Home office | South Africa |
| Year | 1979 |
| Type | In-situ | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1988 | |||||||||||||||||||||||||||||||||||
| Indicated | 10000000mt ore | |||||||||||||||||||||||||||||||||||
| Demonstrated | 10000000mt ore | |||||||||||||||||||||||||||||||||||
| Total resources | 10000000mt ore | |||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 7910050059 | |
| USGS | Mineral Resources Data System | MRDS | W028269 | MAS references MRDS |
DE VILLIERS, J. THE MANGANESE DEPOSITS OF THE UNION OF SOUTH
AFRICA, GEOLOGICAL SURVEY OF S.A., HANDBOOK NO.2, PRETORIA,
1960, P. 67.
FERROUS AND NON-FERROUS METALS AND MINERALS IN SOUTH AFRICA
1977, MINERALS BUREAU, DEPT. OF MINES, MARKETING DIRECTORY
NO.2, BRAAMFONTEIN, 1977, P.40.
BOARDMAN,L.G. "FURTHER GEOLOGICAL DATA ON THE POSTMASBURG
AND KURUMAN MANGANESE ORE DEPOSITS, NORTH CAPE
PROVINCE.: THE GEOLOGY OF SOME ORE DEPOSITS IN
SOUTHERN AFRICA. GEOLOGICAL SOCIETY OF SOUTH AFRICA
PP.417-427.
HAMMERBECK, E.C.I. AND J.J. TALJAARDT. "MANGANESE" PP.167-
172.
TALJAARDT, J.J. MAJOR MANGANESE ORE FIELDS SOUTH AFRICA
JOHANNESBURG SOUTH AFRICA, NOV 1979, 10P.
ENGINEERING & MINING JOURNAL, NOVEMBER 1972, P. 190-191.
| Subject category | Comment text |
|---|---|
| Deposit | THE BISHOP, GLOUCHESTER, AND PALING MINES WERE OPERATED AS A UNIT, SO-NAMED "SOUTHERN FARMS", AND GENERALLY FED A COMMON MILL. THE ORE WAS LOW GRADE AND WAS USED MAINLY FOR BLENDING WITH HIGH GRADE ORES. THE MINES WERE SHUT DOWN IN 1983, AND PROBABLY WILL NOT BE REOPENED IN THE FORSEEABLE FUTURE. THE ERRATIC NATURE OF ORE OCCURENCE PRECLUDES ANY RELIABLE RESOURCE ESTIMATE. TOTAL CAPACITY OF THE THREE MINES WAS ABOUT 550,000T/YR PRODUCT. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 07-JUN-1991 | Coffman, Joe | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.