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Hi Malva
It's very intriguing what's going on at Scallywag.
The MMI results showed high copper readings at the south end of Blackbeard and Northwest side of Teach.
Magictrades in his presentation thought this was going to be a copper/gold area.
Can't wait for the Teach drills :))
Hello again, Bamps. I am of course only speculating based on what we currently know, but I do suspect Black Hills may offer more than surface mineralisation. I wonder if the surface mineralisation is due to the Telfer formation being rather close to surface. As you say, Saddlereef has mineralisation closer to surface, but the 250 m depth slice there suggests it connects to A31 as part of a domal structure. This anomalism could very well be deeper and could be suggesting that the vector for mineralisation points further below surface .
Regarding Scallywag, I remember us both sharing excitement about GGP testing deeper anomalies. I am anticipating their Scally part II RNS and am still expecting them to perform/publish the planned 2DIP lines at Teach/southern Blackbeard, as I mentioned a few months ago. I have a number of thoughts about Scally, but should I have anything that I think is different to what others have said, then I might post at a later stage what my thoughts are (once the complete picture for that 2020 season are published). I don't want to pollute the board with more of the same.
To answer your question about London, I wouldn't have been testing the region above the Wilki-puntapunta contact for mineralisation, as I think mineralisation between formations is much more favoured for the Malu-puntapunta contact, so I would hope that the deeper testing that you describe at London goes further down the puntapunta formation to look for a sill. It is also possible that London could be a skarn type deposit, as they suggested, but this wouldn't have been the horse that I bet on for London. My thoughts were the same as yours- the 2DIP responses below surface, and they didn't test these properly (so far). The puntapunta formation looks like the first basement layer on the outside of the western-most structural fold of Scally, but they drilled the inside of the fold where wilki formation was more likely (and was proven as such). The Malu-puntapunta contact, and the puntapunta formation, is where I think a discovery is most likely, so testing the 2DIP anomaly on the outer edge of the structural fold, particularly at the south of Blackbeard, would be my first port of call. Teach had great MMI results and I like the gravity and magnetic coincidence, but I think this might be indicative of its proximity to Blackbeard. My attention would be at those two targets.
Hi Malva
It looks very promising for Blackhills from what you are saying.
The drill results at A29 (Saddlereef)look ok but not outstanding although it's sticking out of the ground, am I right in thinking you are suggesting a deeper anomaly?
Going back to London the sill they found between the Wilki and the Puntapunta formation was not the cause of the magnetic readings and they're saying they would like to go deeper to find the magnetic anomaly. They are suggesting skarn type or another sill what are your thoughts on that?
Thanks ATB:))
Good afternoon, Hydrogen. Thank you for your post. I like your analogy. I would say that I think this might very well be the case, and that depending on the geology, the way the mineralisation represents itself may vary. For example, the Telfer discovery being found in the Malu sedimentary in a domal structure shares a similar geology with our Black Hills licence, which is also a domal Telfer formation in places. In other areas of Black Hills, we see Puntapunta formation, and therefore we will also see the contact between the sedimentary types, as you point out. This will be favourable to mineralisation, and shares this geology with the Minyari-WACA discoveries. So, there may very well be a ‘district-wide’ potential for lithology-contact-controlled mineralisation. Additionally, the possibility of a skarn related discovery also exists here. As a result, we are lucky enough to have three (maybe more) different ways of gold showing itself in one licence. I think this increases the chances of making a discovery and that’s why I think Newcrest were keen on getting involved. The PRE licence appears to be closer related to a Havieron-type geology, so now that there’s a precedent for those types of systems, PRE becomes an additional possibility for gold exploration.
Good afternoon Bamps,
Thank you for your post. I find that here (link below) they mention presence of the Telfer/Malu formation sedimentary with their RC drilling. Alongside what you say about the granite, I think the research publication showing estimated basement layers in the original post seems to be accurate. Here is a link to the RNS with comments on the Telfer/malu type sedimentary:
https://greatlandgold.com/wp-content/uploads/2019/09/20190923-GGP-Announcement-Black-Hills-Update.pdf
Hi Malva
I remember you commenting on the anomaly now called Teach.
I don't remember the Malu formation being mentioned in the Saddlereef drill logs, these mention the Lamill granites which run down to Rudall.
I will have to read them again
ATB:))
I got the figures messed up:
Paterson region basement lithology - first link
Minyari-WACA discovery - second/third link pasted twice
PRE/Black Hills 250m depth slices - fourth link
Looking forward to a blazing 2021 exploration programme
I have been non-stop busy in recent months, but wanted to share my thoughts on the Juri JV. There are a number of things that I'm looking forward to/would like to see.
https://d28rz98at9flks.cloudfront.net/65482/Proterozoic_Solid_Geology_Map_Paterson_Area.pdf
Firstly, I will point out the putative basement layers of the Paterson (see figure in link above) which seems to point to our Black Hills project having malu formation sedimentary sitting directly below the permian/canning cover. It also seems to offer puntapunta and wilki sedimentary as the basement layer in the license, which provides opportunity to test contact points between different sedimentary types. I would personally like to see testing of malu-puntapunta contacts, where it appears our A29 and A31 AEM anomalies reside (second link).
https://antipaminerals.com.au/project/north-telfer-project
I note that the Minyari-WACA deposits are described as strata/contact controlled discoveries (third link), and that they are found along this exact same malu/puntapunta contact, and shares similarities with Telfer. I resoundingly hope this is tested in the upcoming campaign. This doesn't appear as a target for them currently, but similar to Scallywag where I highlighted the prospective 'Teach' target before they actually labelled it as such, I speculate that they are fully aware and will turn their attention to it in the future. The lack of a surface magnetic response seems to have put other targets to the front of the queue. Parlay also looks prospective based on its coincident magnetic/gravity response
https://antipaminerals.com.au/project/north-telfer-project
https://greatlandgold.com/wp-content/uploads/2021/02/210223-GGP-Announcement-Juri-JV-AEM-Results.pdf
As a sidenote, I was expecting 2DIP surveys of southern Blackbeard/'Teach' from the 2020 campaign, so am hoping that these appear in their upcoming RNS (I might share my thoughts on Scally if I believe there is anything new I can offer, upon the arrival of the final 4 drill results, but my thoughts remain unchanged so far).
As for PRE, we unfortunately cannot see much of the basement layers on the first link, but a a bit of extrapolation says that this is undifferentiated sedimentary of the yeena supergroup. A large granite which stretches up and towards Minyari Hill also appears in our licence, so it might be worth testing for skarn type deposits. I was hoping they would have shared the depth slices for the south of the PRE licence, given that's where the drilling is this season, but Tara, Trim, Tama and Los Diablos look to have good continuity in anomalous magnetic response from surface to 250m down. I really wish we could see how the rest of the targets shape up. Goliath was reported to have the strongest geochemical samples, so given its other very strong geophysical responses, offers a lot of excitement.
Newcrest have chosen well- Black Hills and PRE have different strengths and I hope GGP are rewarded for it.