lepidolite

As a noun lepidolite

is lepidolite.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between lepidolite and tourmaline

is that lepidolite is lepidolite while tourmaline is a complex black or dark coloured borosilicate mineral.

In mineralogy terms the difference between muscovite and lepidolite

is that muscovite is a pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl₂(Si₃Al)O₁₀(OH,F)₂; used as an electrical insulator etc while lepidolite is a pale lilac mica mineral that is a mixed basic fluoride and aluminosilicate of potassium, lithium and aluminium.

As nouns the difference between muscovite and lepidolite

is that muscovite is an inhabitant or native of Muscovy or Moscow while lepidolite is a pale lilac mica mineral that is a mixed basic fluoride and aluminosilicate of potassium, lithium and aluminium.

As an adjective Muscovite

is of or relating to Muscovy or Moscow, or the people of these places.