Millerite, Quartz, Galena and Ankerite - Windsor Colliery, Abertridwr, Glamorgan, WalesIronstone nod
Millerite, Quartz, Galena and Ankerite - Windsor Colliery, Abertridwr, Glamorgan, WalesIronstone nodule has little white ankerite lined clefts with green sprays of millerite orientated on a single galena crystal, to the side is a bipyrimidal quartz crystal -- source link
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