Beatrix
Phase: Operations
Mine Type: Underground
Tags: conglomerate palaeo-placer reef
Beatrix is located in the Matjhabeng Magisterial District, near the towns of Welkom and Virginia, approximately 240 km south-west of Johannesburg, in the Free State province of South Africa.
The current mine infrastructure consists of three producing shaft complexes. Mining is focused on open ground and pillars (white areas) of differing reef horizons with the deepest operating level some 2,055m below surface (22 Level at 4 Shaft). The principal mining takes place on the Beatrix Reef (BXR). Additional reefs mined include VS5 Reef of the Eldorado Formation (VS5), Aandenk (AAR) and Kalkoenkrans (KKR).
History:
Beatrix, a shallow to intermediate level gold mine, has been producing gold since 1983, in the southern portion of the Free State Goldfields.
Deposit geology:
Schematic 3D view the Beatrix orebody
Mineralization:
Auriferous and uraniferous palaeo-placer conglomerates, that are locally termed reefs. Laterally continuous with relatively long-range predictability. Clear patterns of mineralisation governed by sedimentary characteristics.
Ore specimens:
Drill core VS5 Aandenk reef of the Eldorado Formation, Witwatersrand
VS5 Aandenk reef of the Eldorado Formation, Witwatersrand
Deposit types:
The palaeo-placer originated from a braided stream environment. The deposition was structurally controlled along a basinal edge.
Mineral Resources (Dec. 31, 2017)
| Class | Ore (ktonnes) | Au grade (g/t) | Au (kg) | Au (oz * 1000) |
|---|---|---|---|---|
| Measured | 25500.00 | 6.60 | 168300.00 | 5394.00 |
| Indicated | 16600.00 | 4.30 | 71380.00 | 2310.00 |
Reserves (Dec. 31, 2017)
| Class | Ore (ktonnes) | Au grade (g/t) | Au (kg) | Au (oz * 1000) |
|---|---|---|---|---|
| Proven | 8900.00 | 3.30 | 29370.00 | 933.00 |
| Probable | 11200.00 | 3.20 | 35840.00 | 1152.00 |
Source:
-
Mineral Resources and Mineral Reserves Report Sibanye-Stillwater
(31.12.2017, None)
Authors: