Bisha Main | Deposit Configuration
The Bisha deposit is configured in three distinct layered zones - a 35m thick surface oxide zone having a high gold and silver content immediately overlying a 30m thick copper enriched supergene zone which itself overlies a primary sulphide zone containing both zinc and copper, which is open to depth.
For a 3D, interactive view of the Bisha Main drill results and other Nevsun drilling programs, click on the link to Corebox on the left.
A full description of the Bisha mineral resource and metallurgy may be found in the Company's Technical Report.
For more detail and a review of Bisha geology, see The Bisha Volcanic-Associated Massive Sulfide Deposit, Western Nakfa Terrane, Eritrea.
| Oxide Zone (0-35m) | Gold enriched oxide cap. Overlying. | |
| Supergene (35-65m) | Copper enriched massive sulphides containing gold and silver. | |
| Primary (65- >450m) | Massive sulphides containing significant copper and high grade zinc zones with appreciable gold and silver. |
