Franckeite : Fe2+(Pb,Sn2+)6Sn4+2Sb2S14
20mm x 25mm
Photo added to mindat.org
“Black, soft, platy mass of franckeite. Former John Sinkankas collection with old Ward's Scientific label. Rolf Luetcke specimen and photo.”
Rolf Luetcke - 3rd July 2016
Photo added to mindat.org
“Black, soft, platy mass of franckeite, in shade to show platy nature of the crystals. Former John Sinkankas collection with old Ward's Scientific label. Rolf Luetcke specimen and photo.”
Rolf Luetcke - 3rd July 2016
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