Petalite Mineral Data - Mindat
Petalite is Not Radioactive : Petalite Classification: Dana Class: 72.06.01.01 Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings : with tetrahedral Al cross-linking : Dana Group : 72.06.01.01 Petalite LiAlSi4O10 P 2/a 2/m : Strunz Class: 09.EF.05 09 - SILICATES (Germanates) 09.E - Phyllosilicates