Trial open cut mining planned: ~100Koz pa Au at a conservative 1oz/t Au, page-112

Basically the article is suggesting that the mineralisation at Serra Leste only came about because a layer of carbonaceous meta-siltstone formed a cap over the top of a cooling doiritic intrusion, this allowed a narrow set of chemical conditions to exist which created the deposit in the sediments. The article is also unclear about the source of the gold and PGEs. It suggests an intrusion model for the source of the metals but is not categorical as it also suggests the PGEs could have been scavenged from nearby ultramafic rocks and the carbonaceous meta-siltstone itself could have been the source of the gold and PGEs.

It seems that the Serra Leste Au-Pt-Pd deposit needed more than just the effects of an intrusive intermediate magma to form. There were some other ingredients which that article is theorising about.

Does BBX have any evidence on the ground of the other key ingredient, a carbonaceous meta-siltstone having existed over the top of the intruding diorite. The fact that the metal associations are similar in assay is encouraging but direct proof of the same or a similar morphology on the ground would be more encouraging if you are looking for a Serra Pelada (Serra Leste) look a like. All the metals at Serra Pelada are hosted entirely within sediments, not diorite or a gabbro. Eshmun