Getting back to you from yesterday @RTFQ, I've got good news....

Getting back to you from yesterday @RTFQ, I've got good news. Caesium and rubidium are in zinnwaldite. Our Strategic Collaboration announcement on 7 Dec specifies that the "caesium-rubidium manufacturing processes" are included in the technology license we granted Cornish Lithium, but also I remember it being mentioned in the National Geographic article on CLL's website. The way Jeremy Wrathall said it had made me laugh, so I looked it up again. "I can tell you for an absolute fact there is caesium here.”

Also, in the Fully Charged video, CLL's geochemist mentioned they were interested in finding "caesium, rubidium, potassium" in the lithium enriched geothermal waters within the host granite/mica beds.

I hadn't previously read CLL's 7 December company announcement, but have just done so now and was delighted to find caesium and rubidium referred to obliquely twice and directly once:

Joe Walsh, Managing Director of Lepidico Ltd, said:
“Lepidico is delighted that Cornish Lithium has chosen to purchase a licence for use of our L-Max® and LOH-Max® technologies to extract lithium and other valuable by-products from zinnwaldite and polylithionite mineralisation sourced from the St Austell region of Cornwall. We look forward to advancing our collaboration with Cornish Lithium, with the objective of commercialising our process technologies on a broader suite of lithium mica minerals. Recent tests conducted for Cornish Lithium at the Strategic Metallurgy laboratory in Perth, Australia returned encouraging results that continue to demonstrate the potential to produce high purity lithium chemicals and other strategic metal compounds using our technologies.”

Rationale
The Lepidico technologies also allow for the production of important by-products such as rubidium and caesium, (both of which are on the US Government Final List of Critical Minerals 2018) offering potential security of supply of metals used in the technology and defence sectors to the UK. The process also produces amorphous silica (a supplementary cementitious material used to reduce the carbon dioxide footprint of cement) and potassium sulphate (which is used extensively as a chloride-free fertiliser for fruit and vegetable farming) and production of these chemicals is expected to offset operating costs for the long term.


If the news of PLS' spodumene auction travelled around the world at the speed of light on Tuesday, surely those within the industry, 9 months on from the above announcement, will be well aware of what we've got, especially tenement holders of mica resources such as EMH. In a post a few weeks ago @RTFQ you had explained a "locked cycle process incorporating ion exchange resins" EMH had developed, but that it appeared they would discard the caesium and rubidium. I can't imagine. Given the size of their resource, I hope they eventually come knocking. It is the largest hard rock lithium deposit in Europe and the fourth largest non-brine deposit in the world.