"especially if there actually is a SECOND layer to the resource"23 Jul 2020 20:17
Apols if this already mentioned or superceeded in relevance by avaliable drill data but read thru this while back, interesting read as a whole for background understanding.
Re 2nd layer
Interesting snippets from
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.916.5452&rep=rep1&type=pdf
Pg 1790
“Additional drilling along a 7.5-km strike length of the websteritc has indicated that the main mineralized layer generally occurs within 20 m of the ultramafic-gabbroic zone contact, although minor PdCu-Ni enrichment (e.g., 2 m @ 800 ppb Pd, 60 ppb Pt in DDH MM1) is present 45 m below the contact”
ppb = 0.1g/t
Interesting in respect to…. The Drill Programme is designed to….Test for the presence of a second reef below the primary PGE reef
From https://www.lse.co.uk/rns/EEE/munni-munni-pge-project-update-45yaaevuk6c4tdi.html
Pg 1793
“From an exploration point of view the Munni Munni Complex is a good example of how discontinuities in the (Pt + Pd)/ Se, (Pt + Pd)/Cs, and Cu/Zr trends may indicate new magmatic pulses and stratigraphic levels of potential mineralization.”
Pg 1795
“In the Munni Munni intrusion, the Pt/Pd ratio steadily decreases with increasing stratigraphic height. The most prominent reversals in the Pt/Pd ratios occur in the stratigraphic interval 1,700 to 2,250 m, i.e., centered around the mineralized websterite layer (Fig. 10)”
Pg 1797
“Since the magma that formed the Munni Munni ultramafic zone was sulfide undersaturated, the precipitation of S along the basal contact was related to a localized process, e.g., rapid chilling and/or contamination.”
Pg 1799
“The subeconomic levels of the mineralization along the total strike length of the porphyritic websterite layer may indicate that magma mixing was ******ed by a relatively large density difference between the two magma”….” The principal difficulty is that mineralized rocks at Munni Munni are spread over a wide stratigraphic interval, compared with the Merensky reef where the mineralized interval is around 0.8 m thick. For example, in DDH MM1, Pt and Pd averages 1.11 and 1.82 ppm, respectively, over the 3-m-wide interval 63.75 to 66.75 m. If the platinum-group elements were contained in an 0.8m interval, the grade would average 4.16 ppm Pt and 6.84 ppm Pd which would provide an attractive target”….“subeconomic levels” – then (1989) likely not now (ppm + g/t).
Potential gold upside (maybe dead end) from overlying Fortescue also some useful maps etc
https://www.platinaresources.com.au/wp-content/uploads/2017/11/6-November-2017-ARV-Fortescue-Sediments-above-Munni-Munni-PGE-Deposit.pdf
Nearby novo deposit mentioned above, along trend of MM tenement - inclusive of same contact
https://www.globalminingreview.com/exploration-development/15022018/purdys-reward-yields-high-grade-gold-results/
AIMO ATB