| Deposit ID | 10038808 |
|---|---|
| MRDS ID | M046257 |
| Record type | Site |
| Mineralized Area | Bushveld Complex |
| Current site name | Union Mine |
| Alternate or previous names | Rustenburg Platinum Mines Ltd. Union Section |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | 27.16139, -24.94087 (WGS84) |
| Location accuracy | 100(meters) |
| Relative position | 48 MILES N 5 DEG W RUSTENBURG, ABOUT EIGHT MILES WEST OF NORTHAM. |
Political divisions (FIPS codes)
North-West(province)
South Africa(country)
Africa(continent)
Land(continent)
| Country | State |
|---|---|
| South Africa | North-West |
| Commodity | Importance |
|---|---|
| PGE Critical | Primary |
| Platinum Critical | Primary |
| Palladium Critical | Primary |
| Rhodium Critical | Primary |
| Gold | Primary |
| Ruthenium Critical | Secondary |
| Iridium Critical | Secondary |
| Osmium | Secondary |
| Nickel Critical | Secondary |
| Copper | Secondary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Chromite | Ore |
| Cubanite | Ore |
| Graphite | Ore |
| Millerite | Ore |
| Pentlandite | Ore |
| Pyrite | Ore |
| Pyrrhotite | Ore |
| Sperrylite | Ore |
| Result | ORE = PT 60%, PD 27%, RU 5%, RH 2.7%, IR .7%, OS .6%, AU 4% (TYPICAL ORE) |
|---|
| Model code | 4 |
|---|---|
| USGS model code | 2b |
| Deposit model name | Merensky Reef PGE |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Gabbro > Norite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| Main Entrance (1) | 27.16139, -24.94087 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | "Potholes" = Basin - Shaped Depression In Reef, "Koppies" = Dome Shaped Structure In Reef |
| Strike | N 40 DEG E |
|---|---|
| Dip | 21 DEG SE |
| Thickness | 6.1M |
| Name | Merensky Reef |
|---|---|
| General form | tabular |
| Area | 6100HA |
| Name | UG2 chromitite reef |
|---|---|
| General form | tabular |
| Area | 6100HA |
| Operation type | Underground |
|---|---|
| Development status | Producer |
| Commodity type | Metallic |
| Deposit size | Large |
| Significant | Yes |
| Discovery year | 1924 |
| District name | Rustenburg District |
|---|
| Type | Owner |
|---|---|
| Owner | Rustenburg Platinum Mines, Ltd. |
| Home office | Rustenburg, R.S.A. |
| Type | Owner-Operator |
|---|---|
| Owner | Anglo Platinum |
| Interest | 100 |
| Home office | South Africa |
| Year | 2010 |
| Year | 2008 |
|---|---|
| Material | 314,069 ounces Pt |
| Accuracy | Accurate |
| Year | 2009 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | 297,814 ounces Pt | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
| Type | In-situ |
|---|---|
| Name | Merensky Reef |
| Estimate year | 2010 |
| Proved | 700000metric tons |
| Probable | 100000metric tons |
| Measured | 26800000metric tons |
| Indicated | 35800000metric tons |
| Inferred | 29300000metric tons |
| Remarks | Anglo Platinum reports values as "exclusive" i.e. "Mineral Resources are quoted exclusive of Ore Reserves" There are different grades for each category so there is not way to fill in the detail records. Proved 4E grade is 5.53 g/t, probable 4E grade is 6.57 g/t, measured 4E grade is 6.44 g/t, indicated 4E grade is 6.18 g/t, inferred 4E grade is 6.27 g/t. Prill splits are 63.5% Pt, 28% Pd, 5.4% Rh, 2.7% Au. Each resource class must be calculated differently because the grades are different. In this case they would have to be calculated outside of MRDS because it is not designed for this complexity. |
| Type | In-situ |
|---|---|
| Name | UG2 Chromitite reef |
| Estimate year | 2010 |
| Proved | 34900000metric tons |
| Probable | 18100000metric tons |
| Measured | 44400000metric tons |
| Indicated | 40600000metric tons |
| Inferred | 55400000metric tons |
| Remarks | Anglo Platinum reports values as "exclusive" i.e. "Mineral Resources are quoted exclusive of Ore Reserves" There are different grades for each category so there is not way to fill in the detail records. Proved 4E grade is 3.77 g/t, probable 4E grade is 3.73 g/t, measured 4E grade is 5.61 g/t, indicated 4E grade is 5.53 g/t, inferred 4E grade is 5.53 g/t. Prill splits are 59.7% Pt, 29% Pd, 11.2% Rh, 0.5% Au. |
| Type of workings | Underground |
|---|---|
| Length | 3620.93M |
| Overall depth | 213.36M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M046257 |
MERTIE, 1969, ECONOMIC GEOL. OF THE PLATINUM METALS: U. S. G. S. PROF. PAPER 630, P. 39 - 41
VAN ZYLE, 1970, PETROLOGY OF MERENSKY REEF: GEOL. SOC. OF SOUTH AFRICA, SPEC. PUR. 1, SYMPOSIUM BUSHVELD, P. 80 - 107
BRABERS, COMPILER, 1971, LIST OF WORKING MINES IN REPUBLICA OF SOUTH AFRICA: DEPT. MINES, REPUBLICA OF SOUTH AFRICA, 25 P.
SOUTH AFRICAN MINING AND ENGINEERING JOURNAL, JULY, 1975.
MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7, 1976.
ISMI
Anglo Platinum Limited (AngloAmerican), 2010, Annual Report 2009: Marshalltown, South Africa, Anglo Platinum Limited, Annual Report 2009, 276 p, accessed February 20, 2010, at http://angloplatinum.com/investors/reports/2009.asp.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-OCT-75 | Blair, Will N. | U.S. Geological Survey | |
| Updater | 01-APR-88 | Orris, Greta J. | U.S. Geological Survey | |
| Updater | 28-SEP-10 | Causey, J. Douglas | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.