Caledonia Mining - Location of anomalies within the Nama Retention Licence -
Note. memo - The area hosts cobalt-copper oxide mineralisation probably derived from primary cobalt and copper sulphides. These bodies lie within the weathered profile with subhorizontal and inclined attitudes. The inclined bodies appear to follow the trace of the primary sulphide mineralisation whereas the subhorizontal bodies suggest some redistribution of the cobalt and copper salts with possible scavenging by hydrated iron and manganese oxides.
Caledonia has explored for this mineralisation by soil geochemistry and airborne geophysical surveys. The soil geochemistry program was undertaken satisfactorily and proved to be effective in locating 18 anomalies as targets for follow-up exploration.
Anomaly - Ex. an area of elevated cobalt-in-soil concentrations lies to the northwest of the A or Discovery anomaly along the projected northwest strike of the ore shale. Caledonia has drilled 9 RC boreholes over a total strike of about 11.5 km. The holes were drilled to a maximum depth of 100 m and three holes intersected isolated pockets of cobalt grades etc. all holes ore ended in mineralisation open to depth etc.