Limonite / Goethite : Nandan Co. Hechi Pref.
Nandan County, Hechi Prefecture,
Guangxi Zhuang Autonomous Region, China
61 x 46 x 35 mm small cab.
I was really attracted to these eye catching Limonite / Goethite (not analysed but I suspect the latter) specimens when I first saw them come out of China in 2020.
The rainbow irridescence of the mammilated habit of the piece is just wonderful and so colourful.
This seems to have been a short run of this unusual material as I've not seen any more.