Galileo Mining Ltd (ASX:GAL) has used geophysical modelling to confirm the location of a high priority nickel target at the Delta Blues nickel-copper prospect within the Fraser Range region of Western Australia.
Modelling of the Delta Blues' EM data has verified a highly conductive body with a shallow depth in the range of 125-185 metres
The priority EM conductor at Delta Blues DB2 target has been corroborated by an independent geophysicist with modelled parameters falling within a range of 1,500 to 5,000 siemens (conductive strength) and a strike length between 350 metres and 500 metres with a depth extent between 250 metres and 500 metres.
All modelled parameters indicate a sizeable conductive body that may be related to sulphide mineralisation.
Interpretation of gravity and magnetic data further supports the possibility that the target is associated with magmatic sulphide mineralisation.
“Well developed target”
Managing director Brad Underwood said: “We have completed our target generation work at the Delta Blues prospect and are ready for the drill testing phase to begin.
“All available information presents a compelling case for the potential of mineralisation at the prospect.
“Electromagnetic, gravity, magnetic and aircore drilling data have combined to create a well-developed drill target.
“Drill testing is now required to determine what we have in the ground at this location.
“Meanwhile, regional EM surveying continues to cover large areas of ground with the aim of identifying additional high-quality targets for drilling.”
Confidence to design drill programs
Independent modelling of EM data from the DB2 target has confirmed the location of the conductor within a range overlapping with the original modelling.
This provides confidence in the models which will be used to design drill programs to test for mineralisation.
Drilling programs at Delta Blues will be undertaken following receipt of statutory approvals and completion of on-ground preparatory work.
Review of aeromagnetic data
In addition to the independent geophysical modelling of the EM data undertaken by Geopotential Pty Ltd, Galileo commissioned a review of the detailed aeromagnetic data over the DB2 prospect.
Consultant geophysicist Barry de Wet, a former chief geophysicist at BHP and Ivanhoe, carried out this evaluation, which included magnetic attribute and inversion modelling.
The MVI analysis suggests that the conductive response at DB2 is associated with an accumulation of pyrrhotite sulphide, however, the potential metal content (nickel and/or copper) of any sulphide present can only be determined through drill testing.