“Tetragonal crystals with broad base, ivory, of fluorapophyllite- (K). On some faces are noted growths of small crystals of the same species, but with a prevalence of the bipyramid. Collection and photo of Gianfranco Ciccolini. Nikon D610, bellows, APO Rodagon 50 mm; f: 2.8. Focal using 5.6.”
Gianfranco Ciccolini - 19th March 2016