A quick cut and paste
Completion of Calibre Drilling Programme
Highlights
Calibre Phase 2 Reverse-Circulation drilling programme
significantly expands the deposit size;
o extends strike length of overall Calibre gold-copper
mineralisation to in excess of 1.5km and up to 480m
across strike and remains open in most directions.
o extends strike length of Calibre North gold-copper
mineralisation which includes zones of possible
higher grade gold (with copper) mineralisation, by a
further 300 to 400m north to in excess of 700m in total
strike length;
o strike extent of Calibre North mineralisation
commensurate with previously reported Exploration
Target; and
o mineralisation open down dip, across width and along
strike to the south and possibly the north.
At this stage Phase 2 RC mineralisation indicators are visual
observations with supporting Niton data with assay results
expected within approximately six weeks.
The Calibre follow-up Phase 2 Reverse Circulation (RC) drilling
programme, funded by Rio Tinto Exploration Pty Limited (Rio Tinto) as
part of the recently announced Farm-in Agreement, was completed on the
16 November, 2015. Antipa is now awaiting assay results which are
expected within approximately six weeks.
Phase 2 RC Programme Overview
The Phase 2 RC programme involved the completion of 18 RC drillholes
for 3,711m within the Stage 1 and Stage 2 Calibre North areas (refer to
Figures 1 and 2). No drilling was completed in the contingent Stage 3 area
(refer to Figure 1). Laboratory assay results are expected to be available
within approximately six weeks.
Based on visual observations in conjunction with portable XRF (Niton)
field data the Phase 2 RC drilling has confirmed that gold-copper
mineralisation extends for a further 300 to 400m north of the previous
northern most limits of Calibre North drilling, extending the total strike
length of known Calibre North mineralisation to approximately 700 to
800m and the overall strike length of the Calibre mineralisation to +1.5km,
with the possibility for further extensions to the strike length of the Calibre
mineralisation remaining.
RC Programme Summary
- Stage 1 Area: East-west extensional drilling with 7 RC drillholes completed for 1,417m. Eastern
limits of the Calibre North high-grade gold-copper mineralisation partially constrained with the
western limit of mineralisation remaining open across the 400m strike zone of broad gold-copper
mineralisation (refer to Figures 1 and 2);
- Stage 2 Area: Extensional drilling with 11 RC drillholes completed for 2,294m along a 800m strike
length of the high priority magnetic target trend which extends for 1.2km to the north of the Calibre
North mineralisation (Figures 1 and 2). Based on limited drill coverage the gold-copper
mineralisation weakened northward, particularly between 300 to 400m north of the previous
northern most limits of the Calibre North drilling. At this stage Phase 2 RC mineralisation indicators
are visual observations (including the sulphides chalcopyrite and bismuthinite as a direct indicators
for copper and gold mineralisation respectively) with supporting Niton data which within the Stage
2 Area of Calibre North the Company is assuming that the previously demonstrated Calibre
statistical relationship between pathfinder elements detectable by Niton support a relatable
estimation for gold and copper grades (e.g. bismuth for gold). It is anticipated that geophysical
surveying, involving Induced Polarisation, will be required to focus further drill exploration in this
region; and
- Stage 3: Stage 3 (Figure 1) reconnaissance RC drilling (possible 1,800m) was contingent on the
results from Stage 2 and was not completed at this stage. It is anticipated that geophysical
surveying, involving Induced Polarisation, will be required to identify possible drill targets in this far
northern region.
2016 Citadel Project Exploration Programme
It is anticipated that during 2016 exploration within the Citadel Project, to be carried out as part of the
initial $3 million expenditure commitment under the Antipa’s recently announced Farm-in Agreement
with Rio Tinto, will involve an Induced Polarisation (IP) electrical geophysical survey at Calibre which
will potentially define additional anomalies at Calibre requiring drill testing, in conjunction with
geophysical surveys (including IP) within other regions of the project considered prospective for gold
and/or copper mineralisation with follow-up drill testing of resulting geophysical anomalies. The field
season is planned to commence during March 2016.
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