Quadridavyne / Quadridavyn
(Na,K)6Ca2(Si6Al6O24)Cl4
Colourless quadridavyne crystals. Bellerberg, Ettringen, Eifel, Rheinland-Pfalz, Germany. Picture size 3 mm. Collection and photo Thomas Witzke.
Farblose Quadridavyn-Kristalle. Bellerberg, Ettringen, Eifel, Rheinland-Pfalz, Deutschland. Bildbreite 3 mm. Sammlung und Foto Thomas Witzke.
© Thomas Witzke