RE: Recap for those23 Jan 2021 19:17
That was an interesting interview. The host had obviously got some professional steer on the project, and went for it at 5:07; "Just out of interest... the mineralisation it's predominantly tungsten, here is it?" Cue a very convoluted dodging of the question. He then came back to it at 6:03; "And so the reason you're reporting these grades in tin equivalent... is that... because the tin's more valuable?". Again, more confusing answers, saying the resource out there is largely a tin resource - yet even the preceding 2018 resource had 50% more WO3 than Sn. The truth is, SML seem to be presenting it as a tin project for marketing reasons because they see tin as trendier, yet the higher end market participants looking at this will all be very confused what on earth they are doing. It almost made sense to present as tin equivalent when the project started off in 2013 with similar tin and tungsten grades, but virtually all of the subsequently discovered high grade mineralisation is tungsten so it makes no sense now. And then at 8:20 the host asks about Hemerdon, which obviously is very relevant, whatever they want to say. Either the host or whoever briefed them before the interview knew their stuff.
Anyway, to elaborate further on this, all the drillhole data is shown in the JORC resource press release dated 14 February 2019. If we interrogate that as a database, so looking at all the drilling done on the project in its history - we can see that there are no intersections over 2% Sn, 3 over 0.8% Sn, and 8 over 0.5% Sn. For tungsten meanwhile, there are 8 over 2% WO3, 20 over 0.8% WO3 and 39 over 0.5% WO3. So the high grade mineralisation is overwhelmingly tungsten. Even more clearly, this is demonstrated by the fact the Pearson correlation coefficient between WO3 intercepts and Sn Eq is 0.94, so very strong - whilst the Sn intercept correlation with Sn Eq is actually slightly negative... that means the tin mineralisation has no correlation whatsoever with the overall mineralisation value, whereas with tungsten its a strongly positive correlation. Basically, in laymens terms, the tin is incidental in the overall value of the mineralisation, it isn't a factor in most of the zones of the deposit for where you would target to mine, which is why its grade decreases at higher cutoffs and in the projected mineable resources in the Scoping Study. At best using a tin equivalent grade for this resource is irrelevant, at worst its misleading. And talking about tin prices and so on in relation to this project to try and market it as such likewise. If they want to have a tin project, they need to find some decent tin mineralisation, 3 intersections between 0.8% and 1.6% tin, does not a tin project make. It won't work, no mining professional is going to recommend this as a tin project currently, and I would advise that this "marketing" is doing more harm than good to the credibility of the project and especially its owners.