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15th Jan 2006 11:18 UTCGeorge Eric Stanley Curtis

This is colorless, very transparent, and rectangular cross section.

I wonder if it could be Fluellite??

Does anyone recognise it?

Eric

15th Jan 2006 11:23 UTCMarco E. Ciriotti Manager

Locality?

15th Jan 2006 13:39 UTCGeorge Eric Stanley Curtis

Relistian, old copper mine, Cornwall

Cavity in quartz contains sulphide and several of these things.

Eric

15th Jan 2006 17:25 UTCUwe Kolitsch Manager

Anglesite? Baryte?

15th Jan 2006 17:37 UTCAlan Plante

Cerussite?

15th Jan 2006 17:43 UTCGeorge Eric Stanley Curtis

The shape is characteristic for all the crystals in the cavity.

It differs from any other mineral I have ever seen.

There is little or no lead at the mine, no galena, it is mostly copper, with small amounts of cassiterite.

Eric

16th Jan 2006 10:02 UTCUwe Kolitsch Manager

Hi Eric,

I could check the sample for you with single-crystal X-ray diffraction (+ SEM-EDS if necessary).

Contact me privately.

Cheers, Uwe Kolitsch

16th Jan 2006 11:17 UTCGeorge Eric Stanley Curtis

Thanks for last,

Will email soon.

Regards

Eric

19th Jan 2006 19:12 UTCGeorge Eric Stanley Curtis

My thanks go to Uwe Kolitsch who has positively identified this strange looking mineral as ANGLESITE.

19th Jan 2006 23:01 UTCUwe Kolitsch Manager

Have updated the mineral list of the deposit.

Uwe Kolitsch

20th Jan 2006 08:39 UTCJen

I have two tcw afghan royal blue lapis cabachon cut. They are untreated/unheated. Also a .25 tunduru color change sapphire. Trillon cut. Pinkish color. Also 60 ct smokey quartz. All stones are untreated/unheated. Was wondering if anyone knew the value or any other info that might help me out with these stones. Thank you.

20th Jan 2006 22:52 UTCGordon Derry

Just out of interest George, does it fluoresce?

KOR

GOR

22nd Jan 2006 17:16 UTCGeorge Eric Stanley Curtis

It does not flouresce in LW UV, dont have SW.

Regards