The resource update comprises 72,500 ounces for Lady Ada and 213,200 ounces for Lady Magdalene, which sit less than 100 metres apart. The total estimate of 4.89 million tonnes uses a 0.5g/t cut-off grade.
A key feature of the update is a 43 per cent increase in the higher-confidence measured and indicated categories, lifting the combined resource to 1.69 million tonnes grading 1.85g/t for 100,400 ounces of gold. The measured component stands at 158,000 tonnes at 3.04g/t for 15,400 ounces, while the indicated portion adds 1.53 million tonnes at 1.73g/t for 85,000 ounces, with the balance in the inferred category.
Interestingly, the update also resulted in a minor four per cent decrease in the total ounce count following a re-estimation by independent consultants Widenbar and Associates. This adjustment is said to lend a higher degree of confidence to the new numbers.
Forrestania Resources chairman David Geraghty said: "We believe this resource will play an important role in Forrestania's strategy of establishing long-term gold production."
Mineralisation at the deposits is typical of Archaean-aged, shear-zone hosted deposits in the Yilgarn region, concealed beneath 8 to 12 metres of cover and hosted primarily in a quartz dolerite unit.