Lepidolite

The name lepidolite comes from the Greek word lepidos or "scale" because as a mica it resembles fish scales. It is a relatively uncommon mineral that forms in pegmatite rocks that are enriched in lithium. It is sometimes found intergrown with muscovite mica.

Chemical Formula:

K(Li,Al)2-3(AlSi3O10)(O,OH,F)2

Mineral Class:

Phyllosilicate

Crystal System:

Monoclinic or hexagonal

Symmetry:

2/m

Hardness:

2.5-4

Specific Gravity:

2.8-2.9

Cleavage:

{001} perfect

Fracture:

Uneven

Color:

Pink, lavendar, gray/white

Streak:

White

Luster:

Pearly

Transparency:

Translucent

Common Habits:

Platy, foliated

Other Properties:

Notable Localities:

Moravia, Czech Republic; Zimbabwe; Pala, California

Uses:

Ore of lithium, manufacture of heat resistant glass

Associated Minerals:

Tourmaline, spodumene, muscovite

Specimens:


Lepidolite
Minas Gerais, Brazil