Lithological control on mineralization was expected to be strongest where large blocks of metasediment occurred within the granitoid sections of Boroo Zones 2, 3 and 5. Drill hole depths were designed to test the main ore envelope and to intersect lithologically-controlled mineralization that might lie within
a mineable distance below it.
To date, four zones of economic gold mineralization have been identified on the Boroo property along the trend of the thrust fault, identified as Zones 2, 3, 5 and 6. The gold mineralization and the enclosing near-surface rocks have been subject to oxidation. The oxide zone has the highest degree of oxidation, followed by a transitional zone, and then the underlying fresh rocks in the primary zone of mineralization. The oxide zone is the host to 40% of the mineral reserves on the Boroo property, and a further 45% are in the transitional zone, thus facilitating the recovery of gold in the treatment
of Boroo ore. The total depth to the bottom of the gold mineralization currently
planned to be mined is less than 130 metres reflecting the flat-lying nature of the gold deposits.