Ann: High-Grade Rear Earth & Niobium Zones at C3 & C5 - Mangaroon, page-33

Some posts I made on WA1 working through the Nb market and WA1'a Luni deposit specifically if you're interested.

Nb market, monopolistic, good for one new entrant, maybe two... https://hotcopper.com.au/posts/68322130/single

Ferroniobium Production Process.. https://hotcopper.com.au/posts/68279590/single

Metallurgy (not detailed but reminder of difficulties with fine grained, intergrowth re-precipitated oxide minerals)
https://hotcopper.com.au/posts/68324461/single

Niobium Batteries demand upside (long winded in response to thread discussion issues) https://hotcopper.com.au/posts/68376489/single

More on metallurgy, because it's so critical https://hotcopper.com.au/posts/68487092/single

Luni eEconomic summary, high costs assumptions to rigorously to test https://hotcopper.com.au/posts/68489531/single

C3 Nb rich zone so far has depth weighted average of 19m @ 1.04% Nb, over an area ~250m x 100m x 20m x 1.8SG = 900kt @ 1% Nb so far. More infill to come, but any Nb development needs to be supported by sufficient tonnage (minimum 1Mtpa but higher at lower grades like 1% Nb) to hit material annual FeNb production rates that will support a large capex operation (can't sell a Nb con).

Like the C3 discussion last week, leveraging off an existing ironstone mine infrastructure and mining operation is huge leg-up. From the float tanks onwards it's all high variable costs, low fixed costs for each element and probably ore type.