Hisingerite : Fe3+2(Si2O5)(OH)4·2H2O
Rhodochrosite : MnCO3
2.9cm x 2.1cm
Photo added to mindat.org
“Dark brown hisingerite on rhodochrosite.
Photographed by, and in the collection of Dan Costian.
”
Dan Costian - 3rd May 2015
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