Lepidolite has a monclinic crystal system and is in the phyllo or sheet silicate mica group. Its coloring is generally a pinkish violet. Basically it is a mica that contains lithium. It is formed in a primary process in pegmatites or in transformed granites.
Well formed crystals of up to an inch have been found in Auburn, Maine, but generally, it is the fine grained pieces that are more commonly found throughout the US, mainly in Colorado and in New Mexico. Abundant deposits have now also been found in Afganistan, Pakistan, Brazil, Sweden, Madagascar and Australia.