Strong copper mineralisation intersected at ‘Jericho’ for Eloise JV, Cloncurry
• Inaugural drilling into 4km long Jericho target intersects multiple copper sulphide zones in first two holes
• Second hole, testing 3 separate EM conductors, intersected copper sulphide rich mineralisation at each
of the western and central zones
• Central zone comprises massive and semi-massive copper sulphides in two horizons up to 7.2m wide
• Step out drilling approved to continue and second rig mobilising to test Arlington and St Louis
Minotaur Exploration Ltd has provided a drilling update for the Eloise JV, northwest Queensland. Four holes are testing 3 electromagnetic (EM) anomalies located 5-13km south of the Eloise copper-gold mine. First-pass holes at the Jericho target intersected massive to semi-massive copper sulphides in several horizons.
Jericho comprises multi-plate conductive zones up to 4km in length. The anomalies lie coincident to weak magnetic features now known to be structurally-controlled pyrrhotite. The first hole, EL17D05, targeted the western conductor (J1) toward its southern end. The second hole, EL17D06, in the middle of Jericho, targeted 3 EM plates including the western (J1), central (J2) and eastern (J3) conductors (Figure 3). Note: all comments below referring to chalcopyrite content are based on visual estimates from geological logging and are provided as a guide only to the potential tenor of mineralisation; samples are yet to be sent to the laboratory for analysis.
Chalcopyrite is an iron sulphide copper form with composition 34.6% copper.
EL17D05: was completed at 200.3m (Table 1), targeting the modelled EM conductor at 125m depth.
Disseminated and stringer/veinlet pyrrhotite-chalcopyrite sulphide mineralisation was intersected over
97-125m; the best interval with visible chalcopyrite estimated to range between 1-4% chalcopyrite
occurs 97-107m downhole.
EL17D06: was terminated at 894.1m (Figure 3 and Table 1) after passing through all 3 EM modelled plate
positions (J1-J3).
J1: intersected between 202-232m, a 30m zone of disseminated, veinlet and crackle breccia hosted
pyrrhotite-chalcopyrite. Based on visual estimates, the average chalcopyrite content over the entire interval
is likely to be <1%, with localised zones up to 0.4m wide may contain up to 10% chalcopyrite (Figure 4).
J2: intersected between 439-465.4m two zones of massive to semi-massive chalcopyrite-pyrrhotite
mineralisation comprising 4.4m from 440-444.4m and 7.2m from 454.5-461.7m (Figures 5-6). Visual
estimates suggest the average chalcopyrite content over each of these zones is >10%. Enveloping this
are zones of relatively narrow, weaker veins of disseminated chalcopyrite and pyrrhotite.
J3: the precise position of the modelled plate is not yet clear with multiple zones of veined and semi-
massive pyrrhotite intersected intermittently over a wide interval between approximately 700m to end of hole. Most of the semi-massive pyrrhotite zones occur within brecciated quartz veins similar to those developed at J1 and J2 positions but are narrower and contain only minor chalcopyrite.
Both holes have been cased with PVC to allow for downhole EM (DHEM) survey in the coming days to assist
drill follow-up.
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