RE: NCM UPDATE19 Aug 2021 00:37
There are 15 drills not reported in the last NCM exploration report marked assay pending.
Only 2 of these are targeting the sulphides but below the MRE inferred resource level.
The MRE indicated resource has enough drills to put into the PFS down to 350m.
In the MRE RNS it states under Jorc rules not enough drilling had been undertaken to include the Northern breccia except some high grade pockets.
These 15 drills and 1 part drill are targeting the Northern breccia and northern crescent apart from a few targets in the SE breccia.
6 of these drills have poked out through unexplored zones in the eastern breccia and southern extension. That is very exciting to increase volume.
What are these drills likely to find ?
Well SD was getting very excited about the Northern corridor of high grade zone. This looks to me more high grade breccia than sulphides.
The last MRE was split into 3 Domains of mineralisation which didn’t include the weak crackle.
This again doesn’t look as though it’s been targeted for the inferred resource in December.
It’s the high grade breccia they’re after not as high as the sulphides but decent long grade intercepts.
I would imagine these would be split into 2 Domains for the coming inferred resource down to around 700m.
What are these Domains best to look at the last MRE RNS
“ domain- specific metallurgical recoveries of 84-94% for Au and 82-92% for Cu, a AUD/USD exchange rate of 0.75, as well as treatment and refining costs, payabilities and royalties, similar to those at Telfer.
Ordinary Kriging of gold and copper was undertaken into 10m x 10m x 10m blocks and re-blocked into 5m x 5m x 5m blocks. The resource model was domained utilising the geological units of the Crescent Zone, the Calcite Cemented Breccia and Actinolite Cemented Breccia. Hard boundaries were used between all three Zones.”
We know from this that the MRE was formed by using these 3 geological mineralisation.
Now we are expecting no sulphides apart from a few pockets so there are 2 Domains of breccia calcerite and actinolite. I’ve read somewhere on the NCM web site that the calcerite has slightly better recovery %, actinolite was also one of the minerals at Telfer producing the gold and copper, so that’s very positive.
I’ve read that the actinolite degrades to chlorite and carbonates, i believe copper accumulation occurs with the chlorites and gold in the carbonates but that needs confirming
The northern corridor sounds like it’s both these 2 Domains but they haven’t been itemised as far as I know, it stretches from under the SE crescent zone and rising up through the centre and out into the North west extension.
All very exciting and growing :))