Daly River, NT, quarterly report 01-03-1975 to 28-05-1975.

Abstract

Three zones of zinc mineralisation are known in the northern portion of the Daly River Prospect: Anomalies A, B and Warrs. Recent studies, combined with a review of all available data indicates that Anomaly A is the most interesting area. Structural analysis indicates a pipe-like mineralised zone, plunging steeply north. Probable ore reserves, based on present drill hole information are of the order of 150,000 tons at 14% Zn to 500 feet depth with a further possible ore reserve of 300,000 tons at 14%Zn to a depth of 1600 feet. These reserves are considered to be sub economic and a marked expansion with depth is required to achieve say 2 million tons. Should a decision be made to carry out further work, the following stages would be appropriate: Stage 1: Re-establish the Western Nuclear grid, and carry out a Total Magnetic Intensity survey over the Anomaly A Warrs area. Following this, re-interpretation of the geophysical results in conjunction with the existing data. This should provide a better appreciation of the attitude and depth extension of the magnetic anomalies. Further, magnetic susceptibility tests could also he carried out on the drill core. Stage 2: Two diamond drill holes at Anomaly A, to test the mineralisation at the same vertical depth, but to the north of the DDH Al intersection. Two diamond drill holes at Warrs, to test the northward plunge of the mineralisation intersected in DDHs W1, W2. The programme would consitute 600 to 1000m of drilling.