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Discovery of Havieron
On 25th July 2017, Greatland purchased the ground and immediately worked
to enhance the definition of Havieron’s footprint using an innovative approach
2017 Greatland Gold to geophysical modelling
High-resolution
Aeromagnetic Data Residual of the Terrain Digital Terrain Model* Magnetic model response at
(50m spaced NNE flight lines at 40m altitude) Corrected Gravity depth slice
d=420m with drill collars and surface trace
Mineralisation centred on “bullseye’ A weak (0.5mGal) irregular gravity ovoid in
100 nT magnetic anomaly the terrain corrected residual gravity Target mineralized rock volume
Gravity data defined an irregular gradient. *Three large sand dunes disrupt the Bouguer gravity
image due to over-correction (using the standard density of 2.67 gm/cc); this disruption was
reduced using a density of 1.50 gm/cc consistent with the loose dry sand within the thick dunes.
1 Hanneson, J.E. and Baxter, C.N., 2021. Havieron discovery - geophysical modelling and drilling. Unpublished Greatland Gold Report.
