Although the locations of the zinc and copper rich VMS (volcanogenic massive sulphide) horizons are broadly known from historical shallow drilling and mapping programs, this new survey commissioned by ENT was designed to refine targeting and highlight new areas for investigation. The preliminary TEM image in Figure 1 below highlights several late time conductors occurring along the Wattagee and Emily Well VMS horizons.
Enterprise has digitized and re-processed electrical geophysics completed by Esso over the AM 14 area, with a view to re-evaluating selected targetsfor further drill testing, generating new targets and identifying areas requiring follow-up geochemical programs and drilling. The IP surveys conducted by Esso over the AM14 prospect were modelled with 2D inversion software. The inversion models were run with a vertical bias to match the steeply dipping geology. An IP line over the massive sulphide lenses intersected by Esso's drill holes WP135 and WP138 were reprocessed, and IP and resistivity models produced. The massive sulphide lenses were characterised by high IP and low resistivity (conductive) responses. The resistivity model identified three additional conductive zones (A, B & C) which have associated high IP responses. These additional conductive zones (inc. Target A) did not appear to have been drill tested and are considered by Enterprise to be priority targets..
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