Cristal plan de type plaquette (P1a selon la classification de Nakaya (1954), de Magono and Lee (1966) et de Kikuchi et al. (2013)).
Snow crystal, plan, plate crystal (P1a-type in Nakaya classification (1954), in Magono and Lee classification (1966) and in Kikuchi et al. global classification of snow crystals, ice crystals, and other solid precipitation (2013).