Palmierite (and atacamite?)

[ReneZ]

Rene, what can I say? Obviously your a priori confidence in experts is much higher than mine. 

Higher, yes, probably. Generally? Yes, also probably.

I just cannot agree with the complete lack of confidence, and the assumption of amateurish behaviour (as described), in this particular case.
 
This is a discipline exercised by different centres, who make publications, advance their knowledge, exchange knowledge at conferences etc. How can we judge, even have the first idea, about the extent of knowledge these people have?