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Improving Mindat.orgUvite not on list of minerals found at Pomba Pit when adding Photo

20th May 2017 00:49 UTCJohn M Stolz Expert

See

20th May 2017 00:50 UTCJohn M Stolz Expert

Sorry; https://www.mindat.org/photo-822037.html

20th May 2017 01:11 UTCDavid Von Bargen Manager

Yes, minerals are not listed if the mineral is listed as questionable from the location.

20th May 2017 03:54 UTCJohn M Stolz Expert

Well, I looked up Uvite, and it took me to a page where they all came from that location.

20th May 2017 08:02 UTCJolyon Ralph Founder

Why is it questioned?

20th May 2017 08:03 UTCJolyon Ralph Founder

For now, John, best to list your photo as tourmaline.

20th May 2017 09:07 UTCRalph S Bottrill 🌟 Manager

Uvite is no longer an IMA approved species as all samples analysed turned out to be Fluor-Uvite. ( Why they didn't just make uvite the F end member is another issue!). But this left all uvite photos, including those from this location, orphaned and considered invalid. Maybe we should globally rename them all to Fluor-uvite?

Memo to self : relabel my specimen!

20th May 2017 10:11 UTCIlkka Mikkola

Hi Ralph

Uvite is an IMA approved mineral. See: http://nrmima.nrm.se//IMA_Master_List_%282017-03%29.pdf https://www.mindat.org/min-43561.html

https://www.mindat.org/loc-251888.html This was an OH-dominant uvite from Finland (EPMA).

Almost all of the unanalyzed uvites are fluor-uvites

Ilkka

20th May 2017 10:42 UTCJolyon Ralph Founder

Really what we should have is hydroy-uvite and fluor-uvite, with the term 'uvite' being a generic term for unanalysed.

But that's too sensible I guess

20th May 2017 11:03 UTCJolyon Ralph Founder

Ok. Please go have a look at the 'Uvite' page now.

This is another area where mindat.org has had to deviate from standard IMA nomenclature because the nomenclature doesn't represent the reality of what we have to deal with.

Uvite is now a synonym of 'Uvite series'

All photos of 'uvite' are now 'uvite series'

The IMA species 'uvite' which is hydroxyl dominant and pretty scarce is Uvite (OH-dominant end-member). We should NOT add photos to this category (or fluor-uvite) without analysis.

Everything else gets dumped into 'Uvite series'.

And we can also remove the 'questioned' from Uvite on pages where it has been marked questioned simply because of the 'OH/F' issue, as it will now show up as 'uvite series'

20th May 2017 16:22 UTCJohn M Stolz Expert

Yikes--has the dust settled?

So Jolyon, is it appropriate to call the mineral "Uvite series" (in which case it should be a choice on the photo list) unless we know by analysis what end of the OH/F series it is? I see that the OH dominant which I think we're calling "Uvite" is not on the photo page, whereas the Fluor-uvite end of the series IS on the photo page....

20th May 2017 19:05 UTCAlfredo Petrov Manager

Really what we should have is hydroxy-uvite and fluor-uvite, with the term 'uvite' being a generic term for unanalysed.

But that's too sensible I guess.

Totally agree with that!

21st May 2017 00:09 UTCRalph S Bottrill 🌟 Manager

Thanks Jolyon, I awoke this morning thinking we need to change Uvite to Uvite series and it's all done! I quite agree with hydroxy-uvite, I guess we just need to submit it to the IMA?

21st May 2017 00:18 UTCRalph S Bottrill 🌟 Manager

Thanks Ilkka

Does anyone have analytical confirmation for the other "hydroxy-uvites"?

The only published reference for Pomba was a Min Record article in 1979, haven't checked it for an analysis yet.

21st May 2017 15:02 UTCUwe Kolitsch Manager

"( Why they didn't just make uvite the F end member is another issue!)."

Simple reason - to be consistent with the established nomenclature: Dravite - fluor-dravite, schorl - fluor-schorl, etc.

22nd May 2017 13:09 UTCRalph S Bottrill 🌟 Manager

Yes I know but it's seems whenever the IMA try to make all the mineral names in a group consistent in style they just upset everyone. A thankless job, I know they mean well.

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