Sideronatrite : Na2Fe(SO4)2(OH)·3H2O
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“Yellow sideronatrite rosette on coal, p.w. 1.71 mm, collection Jürgen Ingendahl found in November, 2013 and is analyzed, photo Ko Jansen.”
Ko Jansen - 21st January 2016
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Ko Jansen - 17th February 2016
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