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
#minerals#millerite#quartz#geology#rocks#wales#ankerite#galena