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GeneralCuproasbolane

25th Dec 2016 15:57 UTCPaul De Bondt Manager

While browsing the Katanga page I came accross cuproasbolane.

But when looking at the formula, I noticed there is no copper in the formula, only Co, Ni and Mn.


Is this a bug ?


Cheers.


Paul.

25th Dec 2016 18:07 UTCReiner Mielke Expert

No it isn't since it is a variety and not a species. Although asbolane commonly contains copper, copper is not an essential element. However it would be useful to add copper for that page to indicate where in the stucture it can occur which I would assume is with the Co, Ni etc.

25th Dec 2016 21:50 UTCRalph S Bottrill 🌟 Manager

Page amended. I have seen analyses with Cu> Co, so its a potential species in the asbolane group whenever it gets sorted.

26th Dec 2016 00:04 UTCAlfredo Petrov Manager

All depends whether the Cu, Co, etc actually dominate at a structural site, or whether there is still Mn dominating at the site and the Cu and Co are just minor substitution. Is enough known about the asbolane structure? Could be that we still don't have enough information to determine whether asbolane is a group or a species or neither.

26th Dec 2016 01:49 UTCRalph S Bottrill 🌟 Manager

Very true Alfredo, but from the bits of research I could find, it looks like the asbolanes are a group of mixed later minerals with Mn mostly in separate layers to other metals, but this needs more work.
 
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