Too soon to tell but there are some size constraints which can be used to give ball park estimates.
The magnetic image effectively covers half the 300x300m tenement and has a reasonable correlation to mineralisation in the drill holes. This means a triangular shape of some 4oom of strike length and 200m or so down dip (depth) at the predicted 30 degrees to give a planar area of mineralisation.
[Triangle area= 1/2 (Base x perpendicular height) = 1/2 (~400x~200) so used 350 x 100]
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Thickness? Maximum in drilling some 26m.
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Grade? IMO a base of at least 5-10 g/t Au will be needed and then credits from Cobalt and any other significant elements. Too many of the latter and metallurgy may become problematic.
SG? Massive sulphides appear to be the main host for mineralisation so the estimate of 3 for SG
could be conservative.
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The base assumptions above are just that assumptions so "garbage in garbage out" is very possible. Hopefully they aren't garbage and the drilling program will add some good numbers.
Mining - probably selective underground unless grades and thickness blow the above estimates away.
IMO this style of mineralisation will extend beyond the existing tenement as is indicated by the magnetics being open to the North and Southeast.
This magnetic inversion model is NOT from Sara Alicia but it shows what could be happening if there is a deep seated porphyry body below the area and SA is the only surface expression known.
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Gltah