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Ferro-edenite: NaCa2Fe++5Si7AlO22(OH)2 Wohlerite: NaCa2(Zr,Nb)Si2O7(O,OH,F)2
Comments: Transparent yellow wöhlerite crystals embedded in pink feldspar and black mica matrix with black ferro-edenite (var. barkevikite). Location: Langesundsfjorden, Sandoya Island, Porsgrunn, Norway. Scale: Specimen Size: 5x5x3.5 cm. © John Betts - Fine Minerals