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Improving Mindat.orgA few UK errors

14th Dec 2013 18:38 UTCAndy Lawton

A few locality errors:

http://www.mindat.org/photo-501452.html Fluorite probably from Weardale, not Florence mine, Egremont.

Derbyshire fluorite specimens that should probably be moved to the North Pennine Orefield:

http://www.mindat.org/photo-247468.html

http://www.mindat.org/photo-163910.html

http://www.mindat.org/photo-22825.html

14th Dec 2013 21:16 UTCColin Robinson

I'd agree, Andy, and for the following reasons.

pic. 1. The twinning is the give-away with this and the intense colour. Definitely Weardale/Alston Moor

pic. 2. North Pennines as well. Looks like like small ironstone matrix and associated minerals not found in Derbyshire

pic. 3. Looks very much like the material from St. Peters Mine, Allendale

pic. 4. The quartz epimorphs are almost certainly Rampgill Mine. Not sure about it being an 'old-timer' as literally thousands of these have been recovered in recent years.

15th Feb 2014 00:48 UTCAndy Lawton

Anything been done about this?

A belated thanks to Colin for fleshing out my quibbles.

15th Feb 2014 14:43 UTCUwe Kolitsch Manager

Message sent now.

17th Feb 2014 10:51 UTCUwe Kolitsch Manager

http://www.mindat.org/photo-501452.html

Uploader replied:

"The photo had been taken 6 years before in the Millau mineralogical exposition, and on a well known minerals merchant stand. He told me that the origin of the fluorite noticed on the side of the sample was really good.

After your remarks I have searched similar fluorite samples on all the U.K locations. I have noticed that the Frazer's Hush Mine in Rookhope district near Weardale had produced similar samples. Perhaps also, the Rampgill Mine, Nenthead in Alston Moor district.

(...)"

17th Feb 2014 12:31 UTCTimothy Greenland

It might be worth checking the fluorescence of specimen #95Y-58F pictured above. My Florence mine fluorites (collected from the dumps in the 1960s) either don't fluoresce at all, or have a pale yellowish fluorescence under SWU/V only (both blue and colourless crystals). If the specimen in the photo has a strong violet fluorescence under LWU/V, it is probably from a Weardale locality.

Tim

17th Feb 2014 23:15 UTCAndy Lawton

None of the Florence mine fluorites I've seen display interpenetrant twins as seen in the questioned specimen.

I've just run a SWUV over a blue Florence specimen & got a weak yellow fluorescent response at the edges of the crystals.

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