a mineral of the mica group, potassium lithium aluminum silicate, commonly occurring in lilac, rose-colored, or whitish scaly masses: an ore of lithium.
Origin of lepidolite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a lilac, pink, or greyish mica consisting of a hydrous silicate of lithium, potassium, aluminium, and fluorine, containing rubidium as an impurity: a source of lithium and rubidium. Formula: K 2 Li 3 Al 4 Si 7 O 21 (OH,F) 3
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012