| Deposit ID | 10107305 |
|---|---|
| MRDS ID | W014759 |
| Record type | Site |
| Current site name | Finsch Mine |
| Geographic coordinates: | 23.45153, -28.3799 (WGS84) |
|---|---|
| Elevation | 1448 |
| Relative position | 38 KILOMETERS EAST OF POSTMASBURG; 3 KILOMETERS SOUTHWEST OF LIME ACRES |
Political divisions (FIPS codes)
Eastern Cape(province)
South Africa(country)
Africa(continent)
Land(continent)
| Country | State |
|---|---|
| South Africa | Eastern Cape |
| Commodity | Importance |
|---|---|
| Diamond | Primary |
| Materials | Type of material |
|---|---|
| Garnet | Gangue |
| Ilmenite | Gangue |
| Phlogopite | Gangue |
| Result | DIAMOND RECOVERIES CURRENTLY RANGE BETWEEN 0.719 - 0.827 CARATS PER TON OF BLUE GROUND MINED. INDUSTRIAL DIAMONDS COMPRISE 75 PERCENT OF RECOVERIES, GEM DIAMONDS 25 PERCENT. |
|---|
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||||
| Rock unit name | Finsch Kimberlite;Melaphyre And Granite | ||||||
| Rock description | Finsch Kimberlite;Melaphyre And Granite | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Kimberlite |
| Rock unit name | Dwyka Tillite And Shale |
| Rock description | Dwyka Tillite And Shale |
| (1) | 23.45153, -28.3799 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | An Ellipitcal/Vertical Pipe In Precambrian Melaphyre And Granite And In Karroo System Dwyka Tillite And Shale |
| Type of structure | Local |
| Structure description | Finsch Kimberlite (Cretaceous); Dwyka Tillite & Shale (Karroo) (Paleozoic); Melaphyre And Granite (Precambrian) |
| General form | ELLIPITICAL/VERTICAL |
|---|---|
| Strike | E - W |
| Dip | 90 DEG |
| Length | 442M |
| Width | 402M |
| Development status | Producer |
|---|---|
| Commodity type | Non-metallic |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1960 |
| Discoverer | Allister Thornton Fincham |
| Year of first production | 1965 |
| District name | Postmasburg Area; Finsch Kimberlite Pipe |
|---|
| Type | Operator |
|---|---|
| Owner | Kimberley Division Mines |
| Type | Owner |
|---|---|
| Owner | De Beers Consolidated Mines Ltd. |
| Year | 1976 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^Industrial Diamonds 85 %, Gem Diamonds 15 % | ||||||||||||||
| |||||||||||||||
| Year | 1977 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | DIA | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^Industrial Diamonds 85%, Gem Diamonds 15% | ||||||||||||||
| |||||||||||||||
| Year | 1984 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1971-1984 | ||||||||||||||
| Material | DIA | ||||||||||||||
| Description | Cp_Grade: ^Industrial: 85% | ||||||||||||||
| |||||||||||||||
| Year | 1984 |
|---|---|
| Period | 1971-1984 |
| Material | ORE DIA |
| Description | Cp_Grade: ^100.47 Carats/100 Tons |
| Type of workings | Surface |
|---|---|
| Area | 17.807HA |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W014759 |
MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R. A.; 1964
INTERNATIONAL DIAMOND ANNUAL; WILSON, A. N. ; VOL 1, 1971
DE BEERS CONSOLIDATED MINES LIMITED, ANNUAL REPORT.
ENGINEERING AND MINING JOURNAL, 1975, ENGINEERING AND MINING JOURNAL.
WORLD MINING, 1972, WORLD MINING, NOVEMBER 1972.
DE BEERS CONSOLIDATED MINES LTD ANNUAL REPORTS ; DE BEERS ANNUAL REPORT - 1985 ; DE BEERS ANNUAL REPORT-1986 ; DEBEERS CONSOLIDATED MINES LIMITED - 1980 ANNUAL REPORT ; DE BEERS ANNUAL REPORT 1981 ; DE BEERS ANNUAL REPORT - 1982 ; DE BEERS ANNUAL REPORT-1983 ; DE BEERS ANNUAL REPORT - 1984 ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1978 ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1979 ; DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1971 - 1977 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1971 - 1976
| Subject category | Comment text |
|---|---|
| Deposit | ORIGINAL SURFACE AREA COVERED 44 ACRES TOTAL DEPTH OF PIPE NOT AVAILABLE. OPEN PIT WILL BE EXTENDED TO DEPTH OF 335 METERS (ABOUT 1990); UNDERGROUND MINING CURRENTLY PROJECTED TO DEPTH OF 762 METERS. |
| Deposit | INFORMATION MERGED FROM RECORD NUMBER W027326 ; W028255 ; W028868 ; W028869 ; W030970 ; W032267 ; W033023 ; W033152 ; W033831 ; W044580 ; W055333 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1976 | Sweetwood, Charles W. | Department of State | |
| Updater | 01-JUL-1985 | Mccarter, Lorna D | Department of State | |
| Updater | 01-AUG-1977 | Sweetwood, Charles W. | Department of State | |
| Updater | 01-OCT-1978 | Sweetwood, Charles W. | Department of State | |
| Updater | 01-MAY-1980 | Sweetwood, Charles W. | Department of State | |
| Updater | 01-JUL-1981 | Mccarter, Lorna D. | Department of State | |
| Updater | 01-JUL-1982 | Mccarter, Lorna D. | Department of State | |
| Updater | 01-JUN-1984 | Mccarter, Lorna D | Department of State | |
| Updater | 01-JUL-1983 | Mccarter, Lorna D | Department of State | |
| Updater | 01-JUL-1985 | Mccarter, Lorna D | Department of State | |
| Updater | 01-MAY-1986 | Mccarter, Lorna D | Department of State | |
| Updater | 01-JUL-1987 | Mccarter, Lorna D. | Department of State |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.