Gold Anomaly Limited has recently completed a detailed review of geophysical and drill core assay data and has concluded that multiple massive sulphide intercepts at the A2 aeromagnetic anomaly near Croydon, North Queensland may indicate the presence of a major new mineral deposit. The polymetallic mineralisation, which includes tin and silver as well as copper, zinc and lead, has similarities in mineral composition to the large Dajing polymetallic‐tin deposits of Inner Mongolia, China.
The metal content of the intercepts at A2 are particularly significant given the prevailing growth in world metal markets in recent years. Assay results from thick (2 to 13m wide) massive sulphide filled fractures in six of nine widely spaced holes previously drilled by GOA at A2 are particularly impressive, including hole A2‐001 returning a 5m massive sulphide intercept averaging 8% Zn, 180g/t Ag, 0.58% Sn and 0.57% Cu. Massive sulphide zones of 2m or greater down‐hole width are present in six of the nine exploration holes, as shown in Figure 1 – Plan of the A2 drill pattern showing weighted average metal assays for important massive sulphide intercepts.
Gravity and Induced Polarization (IP) anomalies mapped by ground surveys indicate that as much as 600m of strike of the A2 anomaly, particularly eastward of hole A2‐008, remains to be drill tested. Based on the number and apparent strike extent of mineralisation discovered in the initial exploration drilling at A2, a target of between 2 and 10 million tonnes of high‐value massive sulphide could be discovered at A2. (The potential quantity is conceptual in nature, there has been insufficient exploration to define a Mineral Resource, and it is uncertain if further exploration will result in the determination of a Mineral resource).
The results to date warrant resumption of in‐fill drilling and down‐hole geophysics to establish the full extent of these impressive massive sulphide zones. Upcoming activities will focus on measuring the vertical and lateral continuity of the sulphide intercepts and the polymetallic‐tin metal content.