FMF - Friends of Minerals Forum, discussion and message board

[Elise]

I went back through the other threads on this topic to find reference to a book I just hauled back from Tucson: Glossary of Obsolete Mineral Names. The MinRec booth was right next to the Lithographie booth where I was working and I borrowed this book so much during down time that I finally had to purchase it. Not only is it very useful if you are reading papers from different eras or languages, it is actually fun to read....

See the thread: https://www.mineral-forum.com/message-board/viewtopic.php?p=344&highlight=#344 from which this is an excerpt:

[Jean Sendero]

Just a simple question for Peter.

Should I labeled the Los Lamentos Vanadinite as "Vanadinite" or "Arsenian Vanadinite" or something like "Vanadinite (As)".

I am all for accuracy when it comes to labeling and not afraid of getting it right. On several occasions, the location needs to be adjusted and more rarely, but it still happens, the mineral itself needs to be corrected. I have recently seen calcite becoming Baryte. Yes, it happens.

Cheers
Jean

[lluis]

Good morning, Peter, Group

Thanks a lot for info about Ahumada vanadinite/endlichite

But may you be so kind to tell me which is the expected composition of endlichite?
I would understand that could be labelled as vanadinite var. endlichite any vanadinite that has some arsenic in its composition, till a ratio V:As 1:1, when we will have a mimetite vanadium bearing.

Anyway, I always though that Mindat was extremely accurate, and when googling endlichite, first page is

https://www.mindat.org/min-11274.html

And first photo is from Ahumada.

May you be so kind to explain where I commit the error?
Just to change my label.

By the way, any list member could confirm me if the endlichites from Morocco are endlichites (well, vanadinite var. endlichite)?

With best wishes

Lluís

[Jordi Fabre]

[lluis]

Good afternoon, Jordi

Maybe my english is even worse than I imagine, but I think that I have never said that endlichite is an approved species.
That is just the historical name for arsenian bearing vanadinite
Evidently, a 1:1 V:As vanadinite would be a curious case: name? Vanadinite? Mimetite?

But all vanadinites having arsen in his compostion could be labelled as vanadinite var. endlichite.
As a beryl bearing chrome is labeled as beryl var. emerald.

I think that no one should tear his clothes with this names: they explain a lttle better composition: a vanadinite that has some arsen. No more, no less.
Like the Paraiba tourmalines: an elbaite that bears copper and manganese

Being chemist, I love that precissions... (odd that we are...See, how many "mad chemists" are the bads in B films? I collect also Ludwig II from Bayern coins (Ludwig the mad... :-) Wicked sense of humour)

With bes wishes

Lluís