Goethite : α-Fe3+O(OH)
110mm x 70mm x 70mm
Photo added to mindat.org
“A very nice example of the black botryoidal goethite from the Mních deposit. Self collected in March of 2008. Photographed by Albert Russ. Martin Števko collection.
Ref.: Števko M. (2009): Nový nález goethitu na ložisku Mních pri Rožňavskom Bystrom. Minerál, 17, 5, 423-426.”
Martin Stevko - 19th December 2019
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