Mangano-ferri-eckermannite : {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2
Photo added to mindat.org
“F o v mm 6 x mm 4
Photo with Canon Eos 600 D + Bellows + Rodenstock Rodagon 35 mm 1:4,0 reversed
processed by Helicon Focus and Filter
Photo and collection Giovanni Scapin”
Giovanni Scapin - 25th August 2015
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