"Of interest might be the following sections...the first from SFR's Doolgunna project and the second my basic spatial interp of the bonanza hit..."
It is an interp...my interp...but without seeing the geological log for these holes, it is hard to know which way the ore body runs...it could be more vertical, with the bonanza zone coming to surface just behind the ACRC0002 collar (this would correspond with the centre of the Cu-in-soil anomaly), or it could be as I have drawn it...or it could even be more flat lying.
It might also be a small, isolated dyke, which closes up above and below the high grade intersection.
It might also open up at depth into a multiple of fingers, all of which lead to a deeper seated source slightly west of the current drilling.
This is the excitement of such stories in their infancy...we simply don't know?
These sorts of deposits do tend towards the vertical though...and the soil anomaly at surface, directly above the bonanza hit, does add weight to the vertical theory.
Time will tell.
Of interest, most of the drilling which has targeted the soil geochem has hit relatively low grade secondary copper (oxides), this suggests little if any enrichment in the oxide zone...ie, no native copper, no supergene event...or at least, if it is present, it has not been found yet.
After looking at the current drilling though...and previous drilling...it appears almost all the holes targeting the soil geochem are positioned too far to the east...in other words, they have been drilling over the top of the prime mineralised target. This tells me they must have oxides outcropping, or at least some form of surface target, such as higher grade geochem results which they are targeting.
So as you can see, I have made a basic assumption they are targeting surface evidence with their drill planning...I assume with ACRC0002 positioned as a prime target location. Because the oxides are low grade however and evidently well leached, both from within and I suspect away from the main ore body, not a lot can be expected in the shallows directly under the outcroping Cu highs. The low grade drilling results to date prove this.
But...step back a little...and drill deeper...and we get below what I am assuming to be a heavily leached zone...and we hit decent sulphides (primary Cu).
In essence, ACRC0003 was drilled behind what I assume was their prime drill for the 4900N line (ACRC0002). I believe ACRC0002 was planned to drill the shallows just beneath a possible oxide show at surface...but got nothing.
So...in short...it appears we have oxides at surface to the east of ACRC0002...and a deeper sulphide hit further west in ACRC0003...as such, when we join the dots, we get my basic interp of the possible ore body outline as below...
I suspect one of the reasons people have been a bit ho-hum about previous results here, was the fact they only hit very low grade oxides...suggesting it might only be the remnants of a minor Cu show.
The deeper, bonanza hit changes everything though...well at least potentially changes everything.
The high grade intersection was associated with a dolerite intrusion, this will be partially responsible for driving the copper enrichment that has clearly taken place at this location...but we need to know what else lead to the 20%+ Cu results AND 33 ounces/t Ag?
Interestingly, at least one (I think both?) of the historic hits on this structure of note (3%+ hits north and south), were also associated with a dolerite intrusion, or at least on the same gelogical contact, with or without the dolerite. As I have already noted though, drilling to date has been shallow, so who knows what lies beneath these previous hits?
Dolerites are typically vertical structures...but not always of course...and typically continue for some depth. I suggest if they are getting high grade copper associated with dolerite at just 60 odd metres from surface, and there is little if any evidence of grade continuing to surface, then they might get similar, if not better hits, at depth.
I have a theory...the oxide copper in the shallows has resulted from the remobilisation of copper via surface evaporation and draw up of ground water...over millions of years, some copper will find its way up. The significance being, rather than the sulphide orebody ending up in the oxide zone via weathering away of surface material, with a gradual conversion from primary to secondary ore as we normally see, the ore body may have never been in the shallows in the first place...and all we are seeing is a sort of mobilisation of the deeper ore body, via ground water, into the upper geology, dissipating into a low grade, uneventful distribution.
Using this argument, "what lies beneath" is not actually giving any real surface expression.
Importantly, it appears the oxide zone ends somewhere around 40m...and maybe less...so given most of their drilling has concentrated on this upper level, it could well be they have not even scratched the surface here yet...literally!
The dolerite contact was not mentioned for hole ACRC0002 though, so without this it is almost impossible to determine the potential dip of the ore body...at least, not without another hole confirming the geological contact.
If they had drilled a diamond core hole, they would have been able to obtain orientation from the core...but they haven't, instead using RC, which gives us nothing in this regard.
So, all we can do it postulate, using available information...and make a best guess.
By conducting such an exercise, at least we are ready to measure the next lot of results and what they may or may not mean for the unfolding picture...if they hit similar grade, also associated with a dolerite contact...then we can start to get a better handle on the shape of things.
For what it is worth, my image is to scale, although without ground contours or RL's attached to the collars, I have had to assume flat ground. I have also assumed the drill trace maintained a straight path (dip 60 degrees)...in reality, it is likely to have drifted up or down, left or right some 5 degrees or more from the planned dip/azimuth.
For the purpose of this exercise though...such level of detail does not matter.
Anyway...to everyone else, well almost everyone, thanks for the kind comments. I had half an hour spare and thought...what the hell...I may as well do one of my old times analytical attempts.
Let?s see how much flack I get if BML goes pear shaped...lol...always happens, especially from those who have little to say before the event.
If it does well though, they will never mention this stock again.
lol
Cheers!
BML Price at posting:
11.8¢ Sentiment: Buy Disclosure: Held
(20min delay)