b'Conferences and eventsNewsFigure 4.Ridgeway deposit magnetic susceptibility. Units are 10 3 cgs. 3D modelled magnetic susceptibility contours 0.05 to 0.3 SI (Close, 2000).tests on drill core showed strongly anomalous properties in density, chargeability and inductive conductivity inFigure 5.Cross-section of CSAMT from line 24900Nwith drill holes and the mineralised samples. Magnetic susceptibility was alsoselect significant assay results from recently discovered South Shoot projected onto the section (New World Resources 2021).anomalous within mineralisation, and in addition was measured to have a significant component of remanentplayed a major role in the initial discovery, delineation and magnetisation. High-resolution magnetic surveys utilisedunderstanding of the Gonneville deposit under lateritic cover. a drone platform for acquisition. The dipping magneticChalice originally staked the project in 2018 on the basis of a bodies defined by the survey correlated well with the knownpreviously unrecognised, 26 km long, mafic-ultramafic intrusive mineralised lenses. Constraining 3D magnetic inversionscomplex interpreted from open-file aeromagnetic surveys. In with drill data enabled the mineralised lens to be defined to2019, a moving-loop electromagnetic survey conducted over depth in 3 dimensions. Fixed-loop EM was utilised for direct- a discrete 1.60.8 km magnetic anomaly detected multiple detection of conductive VMS mineralisation, but the resultsEM conductors, some of which were interpreted to represent a did not reach expectations. 3DIP was trialled next and wasmassive sulphide source. An RC drilling programme commenced successful at delineating the known mineralisation to a depthin March 2020, with the first hole drilled into the strongest of ~400 m in both in resistivity and chargeability datasets.conductor intersecting massive, matrix and stringer sulphide Subsequent drilling in the central zone confirmed themineralisation reporting 19 m @ 8.4g/t Pd, 1.1g/t Pt, 2.6% Ni, priority IP/resistivity target was high grade mineralisation.1.0% Cu and 0.1% Co from 48 m downhole. Multiple high-Still searching for an indispensable method for targetgrade massive-matrix-heavy disseminated sulphide zones have detection at AntlerTerra Resources then utilised CSAMTsince been intersected in the Gonneville Intrusion, along with deployed in Broadside configuration. The objective of thewidespread, lower-grade disseminated sulphide mineralisation. survey was to map deep-seated conductors over a wideSubsequent geophysical methods include detailed ground area. The broadside method preferences highly-conductivegravity, airborne magnetics, downhole (DHEM) and airborne bodies in a conductive host and minimises the response ofelectromagnetic (AEM) surveys. DHEM has identified multiple less-conductive host units. In addition to lighting up theconductors associated with known, and potentially mineralised known mineralised lenses, the CSAMT survey defined a largezones. Gravity and magnetic survey data and inversions have conductor to the south with a significant depth extent improved the understanding of the geology and structure of the named the South Shoot. NWC tested this new target withintrusion. An AEM survey flown in late 2020 highlighted known drilling, and in March 2021, announced intersections of thickmineralisation at Gonneville as well as identifying multiple new high-grade copper-zinc-rich massive sulphide mineralisationanomalies to the north within the broader Julimar Complex. in the South Shoot (ASX RELEASE 2 MARCH 2021). Geophysical techniques will continue to provide a key role in exploring the Gonneville deposit, targeting extensions of known mineralisation as well as delineating new areas for continued The role of geophysics in the discovery of theexploration within the Julimar Complex.Gonneville PGE-Ni-Cu-Co-Au deposit, Julimar, WAJacob Paggi* (Armada Exploration Services), Kevin Frost and BruceGeophysical signature of the DeGrussa Copper-Gold Kendall (Chalice Mining Limited) Volcanogenic Massive Sulphide deposit, WAThe Gonneville deposit is a significant new PGE-nickel-copper- Bill Peters (Southern Geoscience Consultants)cobalt-gold sulphide deposit discovered by Chalice Mining in 2020. Located only 70 km northeast of Perth, Western Australia,The DeGrussa copper-gold Volcanogenic Massive Sulphide it represents the first major discovery of magmatic sulphide(VMS) deposit (14.8 Mt at 4.2% Cu and 1.4 g/t Au) discovered in mineralisation within the Julimar Complex, in the newly2009 is located 150 kms north of Meekatharra, WA. The initial defined Western Yilgarn Ni-Cu-PGE Province. Geophysics hasdiscovery was from shallow drilling of a geochemical anomaly FEBRUARY 2022 PREVIEW 22'