He also said, but only once I think, that the western end of its...

He also said, but only once I think, that the western end of its 100%-owned bryah holding contained (or appeared to be one) a Mississippi Valley Type deposit - zinc!.

Wiki says:

'Carbonate-hosted lead-zinc ore deposits are important and highly valuable concentrations of lead and zinc sulfide ores hosted within carbonate (limestone, marl, dolomite) formations and which share a common genetic origin.
These ore bodies range from 0.5 million tonnes of contained ore, to 20 million tonnes or more, and have a grade of between 4% combined lead and zinc to over 14% combined lead and zinc. These ore bodies tend to be compact, fairly uniform plug-like or pipe-like replacements of their host carbonate sequences and as such can be extremely profitable mines.
This classification of ore deposits is also known as Mississippi Valley Type or MVT ore deposits, after a number of such deposits along the Mississippi River in the United States, where such ores were first recognised; these include the famed Southeast Missouri Lead District of southeastern Missouri, and deposits in northeast Iowa, southwest Wisconsin, and northwest Illinois.'

Australian examples are at Lennard Shelf and Admiral Bay, both in WA.

I have had a bit of a look at SFR's released info but can't spot any written reference to MVT, although I suspect it's where the Robinson Range drilling was done.

Anyone have any knowledge about any of this?

It came as a surprise to me.

Expect more on this front tho imo.