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PhotosGalena - Friedrichssegen Mine, Frücht, Bad Ems District, Lahn valley, Rhineland-Palatinate, Germany

23rd Mar 2018 17:50 UTCGuenter Blass

02805340016020275926433.jpg
Galena, Cerussite
Friedrichssegen Mine, Friedrichssegen, Lahnstein, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
Copyright © 2018 Douglas Merson
Hi Douglas,


please test with a hot needle the light yellow, spherical xls. It can also be sulphur.

regards

Günter Blass

24th Mar 2018 03:08 UTCMark Heintzelman 🌟 Expert

07098430016020275937421.jpg
It is a possibility, though I don't see much in the way of any pale yellow coloration, only brassy yellow Chalcopyrite.



Sulfur on Galena (Wheatley Mine, Phoenixvile, Chester Co., PA) Old 19th C. specimen, ex Irene DuPont, University of Delaware collection #D2439

24th Mar 2018 13:03 UTCDouglas Merson 🌟 Expert

The ceruusite I refered to is the colorless blocky crystals. I will see if I can find a fine enough needle to get in there with. The FOV being only 1.8mm makes the small pale yellow spheres very sub millimeter.

24th Mar 2018 13:37 UTCDouglas Merson 🌟 Expert

I found a neele that would work and the pale yellow crystals are indeed sulphur. The colorless crystals were not affected by a hot needle.


The caption has been modified to reflect the addition of sulphur.
 
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