Halls Peak Highlights
Halles Peak Exploration Licences
Prime Exploration Targets
Around Halls Peak (the inferred volcanic centre) the sequence contains three target types derived from two distinct phases of mineralisation:
Views on potential of Halls Peak supported by Major Miners
Massive sulphide deposits characteristically occur in clusters of several deposits and areas subjected to mature exploration can contain a giant deposit. Halls Peak is a prime exploration area as it has not, until now, been subjected to modern airborne geophysical exploration.
“There is undoubtedly room for large deposits to occur…. In summary it is felt that the probability of commercially interesting deposits existing at Halls’ Peak is quite high. At least three mineralised horizons involving 8,000 metres of favourable argillites are shown…” C. E. Palethorpe, BHP Melbourne Research Laboratories, 1974
“An ore body in the order of magnitude of ten million tonnes at 30% combined base metals and 150 – 300 g/t silver is possible.” AMOCO, 1983
“Halls Peak, …. is a classic sedex massive sulphide system with potential to discover a large, Mt Isa sized deposit.” Greg McKelvey, Retired Vice President Phelps Dodge sedex systems South America 2006. Mr. McKelvey has given consent to publish his findings.
The VTEM survey flown has potentially located such a predicted target
Multiple High Grade Small Tonnage Zn, Pb, Cu, Ag Lodes
Known deposits. All deposits discovered originally from outcrop.
Several other similar-scale deposits discovered to date but not included in above table.
Note not JORC compliant. The average grades have been calculated from limited assay data, insufficient to provide an accurate measure. The measurements have been undertaken to provide both "ballpark" estimates of possible resources and readily testable exploration concepts for shallow DSO. Based on drill hole data, open file exploration reports and mapping by the Geological Survey of NSW.
High Grade Shallow Intersections 2013 Drilling Gibsons Mine
Drilling confirms multiple closed-spaced ‘stacked’ lenses/lodes
DDH HP026: Section of HQ core from 37.3-38.3m downhole
High Grade DSO
DDH HP 027, portion of core from 1.9 metres (53.80 – 55.70m downhole) at 27.1% Zn, 8.7% Pb, 1.5% Cu, 59.0g/t Ag
Some High Grade Silver Zones
Prime Exploration Targets
Large tonnage (100,000 – 100mt) massive sulphides. Drill Ready Targets Identified
Geotech’s Halls Peak Heliborne VTEM Survey
Results Display Some Anomalies Consistent with Potential Massive Sulphide Deposits
Greg McKelvey, Retired Vice President Phelps Dodge sedex systems South America 2006, after studying geochemical vectors, predicted that the potential site for the formation of a large sedex deposit would be located immediately east of the growth fault hosting the copper-rich Sunnyside and Mickey Mouse Deposits Prediction now strengthened by the discovery of a large flat lying VTEM conductor at depth at this location.
CLASSIC ‘TEXTBOOK’ SEDEX-STYLE ANOMALY
FAULTS CONTROL THE ANOMALIES (Shown in pink)
Figure Below has 2012 VTEM Conductors plotted on 1978 NSW Geol. Survey structure map. Precisely abuts growth faults, potentially classic feeder structures discharging into grabens! The historic mines along the main western growth fault are copper-rich, a further diagnostic characteristic – vector to discharge structure CLASSIC ‘TEXTBOOK’ SEDEX-STYLE ANOMALY FAULTS CONTROL THE ANOMALIES (Shown in pink)
NOTE: The broad conductive zones could be the response of an economic Zn-Pb-Cu-Ag sulphide body but equally could be response of pyritic carbonaceous (graphitic) black shales with sub-economic sulphides.
Normally highly Conservative Geophysicists have stated “These conductors appears to terminate against the same northeast-southwest structures which are spatially associated with several historical workings. These should be the highest priority for ongoing exploration. Evidence of source migration from early to late time towards these faults may be indicating thickening sulphide closer to the fault. This does not appear to be consistent with typical VMS systems, but may be more aligned to sedimentary exhalative (SEDEX) processes.” Southern Geoscience Consultants Pty. Ltd. 2012.
Halls Peak VTEM Conductor Setting is Analogous to McArthur River Deposit
Comparison of Halls Peak potential SEDEX Deposit (left figure in pink) with McArthur River Deposit (right)
Deep Conductor and Structure Fits Classic SEDEX MODEL, SIGNIFICANT POTENTIAL Simplest Fit
Many Additional Quality VTEM Targets, e.g. Halls Peaks Spike Island Modelled Anomaly Similar to Caber Deposit Canada
last updated 30/05/2016