Omitiomire
IBML’s premier asset is the Omitiomire Project, which lies approximately 120 km northeast of Windhoek in central Namibia.
The Omitiomire Project hosts the Omitiomire copper deposit and the Barreshagen copper prospect which occur within the Ekuja Dome covered by EPL 3589 which covers some 988 km2.
A Preliminary Feasibility Study (‘PFS’) was completed in May 2010 for the Omitiomire deposit by Green Team International (Pty) Ltd. This is based on the Mineral Resource estimate for the Omitiomire deposit prepared by Hellman & Schofield Pty Ltd in April 2010.
The copper mineralisation occurs mainly as chalcocite within bands of biotite-bearing schist. The deposit is a broadly tabular body, extending at least 2,300m in a north-south direction, 800m in an east-west direction and generally dipping at a shallow angle to the east. The mineralisation remains open in all directions, although to the east the deposit lies at depths of greater than 200m.
Resource Estimation
The Omitiomire Mineral Resource estimate was prepared by Hellman & Schofield in April 2010. The estimate is based on data from IBML’s drilling programmes completed to the end of 2009 with some historic drilling included.
Cut-off (%Cu) |
Indicated (Mt) |
%Cu |
Cu (t) |
Cu (Mlb) |
|
0.10 |
43 | 0.34 | 146,000 | 322 |
| 0.20 | 30 | 0.42 | 128,000 | 282 |
| 0.25 | 25 | 0.47 | 115,000 | 253 |
| 0.35 | 14 | 0.59 | 85,000 | 187 |
| 0.45 | 9 | 0.69 | 64,000 | 141 |
Cut-off (Cu) |
Inferred (Mt) |
%Cu |
Cu (t) |
Cu (Mlb) |
| 0.10 | 159 | 0.37 | 580,000 | 1278 |
| 0.20 | 113 | 0.45 | 509,000 | 1122 |
| 0.25 | 92 | 0.50 | 465,000 | 1025 |
| 0.35 | 60 | 0.62 | 368,000 | 811 |
| 0.45 | 41 | 0.72 | 292,000 | 644 |
Cut-off (%Cu) |
Indicated plusInferred Resource (Mt) |
%Cu |
Cu (t) |
Cu (Mlb) |
| 0.10 | 202 | 0.36 | 726,000 | 1600 |
| 0.20 | 143 | 0.45 | 638,000 | 1406 |
| 0.25 | 117 | 0.50 | 579,000 | 1277 |
| 0.35 | 74 | 0.61 | 453,000 | 999 |
| 0.45 | 50 | 0.71 | 356,000 | 785 |

Omitiomire deposit – drilling, Mineral Resource outline and extent of pit design
Drilling to date has shown that the Omitiomire deposit continues at depth to the northeast. As part of the DFS, deep drilling is planned to test this zone. Close to the Omitiomire resource, there are other known copper occurrences and geochemical anomalies which have not yet been tested by detailed drilling. These areas will be assessed as part of the sterilisation drilling during the DFS.
Most of the Ekuja Dome and much of the surrounding area of EPL 3589 have been covered by detailed (100m x 100m sample spacing) soil geochemical surveys, which showed widespread copper-in-soil anomalies. Some of these have been tested by a RAB drilling programme, which intersected copper mineralisation at several sites. Additional RC drilling is required to test these targets.