Shenghes, page-70

You are leaving out a ton of information that would allow any sort of viability.
My understanding is a few larger companies have visited Tanbreeze and found there were hardly any sampling records. So I cant see any beyond that in time and location being any more reliable in any way.
So we will need to go with what the experts have sampled and analyzised instead of statements lacking any credibility.
Plus the GoG are well aware of what they need to look at.
Which means your concern are invalid and/or catered to.
Thats a lot of dull air on something that doesnt exist. But I guess if thats all you have, You got to try anything when nextdoor is shining so brightly leaving you in its shadow.