Highly deformed greenstone belts in gneissic terrain in the Archean age Man Shield. Gold deposits are associated with high strain zones adjacent to or within shear zones. Mineralization occurs in pyrrhotite and arsenopyrite bearing mafic to ultramafic schists that have undergone greenschist to amphibolite grade metamorphism.
- Mano River Resources Inc (Canadian, MNO.V, also active in Sierra Leone and Guinea) has extensive holdings in western Liberia. The most advanced prospects, King George and Larjor (KGL), have a combined indicated 1,078,127 t at a grade of 5,23 g/t Au. In March, 2007, the company released the results of a feasibility study on what was then called the New Liberty Project ( 3 open pits) with Proven and Probable Reserves of 4,6 million tonnes grading 3,9 g/t Au containing 573 000 ounces of gold (JORC and National Instrument 43-101 compliant).
- Diamond Fields International Ltd is exploring the Henry Town and Guyama shear zones, in Liberia and the Henry Town zone has shown the existence of near continuous anomalous gold mineralisation.