This large specimen hosts a lot of datolite crystals, up to 3.1 cm. Some fresh pale green on this one and lots of lustre around the piece, although the larger crystals are mostly a silky lustre. There are chalcopyrite crystals (most coated with tetrahedrite) in association, including four small (up to 1. 5 mm) sharp tetrahedra frozen as inclusions inside the datolite. In addition, if you look with magnification there are small brown-burgundy axinite crystals included in one of the datolites (I can only make this identification from other pieces from the find with axinite – these are contained under a fairly frosted face of a datolite crystal – but still, how often do you see axinite included in anything?) This datolite specimen can be displayed in a couple of different ways – the datolite crystals are complete on all sides but the bottom. There is no noticeable human-induced damage – a couple of the crystals were damaged during formation and have crystallized over those broken faces – this is not easy to see anyway. Nice cabinet specimen of datolite.