Target generation from EM and MT data interpretationGeological...

Target generation from EM and MT data interpretation

Geological mapping, interpretation of historical drill data and processing of MT and EM geophysical data has resulted in the definition of three main target areas at Bruvann (Figure 2):

1. Bruvann 01: A strong, 400 by 600 metre MT conductive body is located west and down plunge of the mined-out massive sulphide mineralisation, which is blind at surface and has not been drill tested (Figures 2 and 3). An EM plate has been modelled coincident with the gradient of the MT conductor and is proximal to narrow massive sulphide historical drill intercepts of 1.1 metres at 0.9 % Ni from 278.4 metres and 0.1 metres at 2.7 % Ni from 299.5 metres (P-8-96), which are open in all directions (Figure 4).

2. Bruvann 02: The northern gradient of the above MT conductor is coincident with poorly constrained EM plates at the western extremity of the survey area (Figures 2 and 4). This target is 350 metres west and down dip of the Bruvann Mine where mineralisation is open, including historical drill intercepts from underground drill stations, for example 20.4 metres at 0.45 % Ni (BG-64-01), 18.3 metres at 0.48 % Ni (bh-1144-02), 23.0 metres at 0.42 % Ni (bh-1143-02) and 11.4 metres at 0.67 % Ni (BG-39-01)

3. Bruvann 03: An MT conductor coincident with a modelled EM plate occurs at the contact between gneiss and a peridotite dyke hosted in **bronorite, located one kilometre northeast of the Bruvann Mine (Figures 2 and 5). The conductor continues from surface to over one kilometre below surface and drilling will test both the EM plate and the gradient between very high and moderate conductivities. This is inferred to represent a zone of potential massive sulphide mineralisation at the contact between peridotite and gneiss wall rock with graphite horizons.

Follow up work to test the above targets will include diamond drilling as part of the current program and an extension to the ground EM survey, due to commence at the end of July 2023. The purpose of this is to better define the location and orientation of the Bruvann 02 target prior to drill testing. Downhole EM surveys will be completed at the same time as the extension to the ground EM, to generate and refine additional drill targets.