(Ca(Li2Al) Al6( Si6O18)(BO3)3( OH)3F) . . . . ... .. . . . . . . . . .. . ... ..... . .. . . . . . . . .. .. .. . . . . Liddicoatite gúglite si, sa poserete :)
http://en.wikipedia.org/wiki/Liddicoatite Liddicoatite is a rare member of the tourmaline group of minerals, elbaite subgroup, and the theoretical calcium endmember of the elbaite-liddicoatite series; the pure end-member has not yet been found in nature . . . . ... .. . . . . . . . . .. . ... ..... . .. . . . . . . . .. .. .. . . . .