Lepidolite
Lepidolite is a lilac-pink lithium mica found in granitic pegmatites and is one of the most important lithium sources in the world. With electric vehicles driving lithium demand, lepidolite is more economically significant than ever. Maine's Oxford County produces lepidolite with magnificent gem tourmalines; California's Pala district yields it alongside kunzite and morganite. The lavender color is unmistakable.
Physical Properties
Chemical Formula
K(Li,Al)₃(AlSi₃)O₁₀(F,OH)₂
Hardness (Mohs)
2.5–3
Color
Pale lilac, pink, purple, gray, colorless
Luster
Pearly to vitreous
Crystal System
Monoclinic
Streak
White
Cleavage
Perfect basal (one direction)
Specific Gravity
2.8–3.3
🔍 Field Identification Tips
Lavender to lilac-pink color in a micaceous mineral (flexible sheets). Very soft (2.5–3). Perfect basal cleavage producing shiny flexible sheets. Found in granitic pegmatites alongside quartz, feldspar, and colored tourmalines. Distinguished from muscovite by color (muscovite is silver) and pink from rhodonite by micaceous habit.
Varieties & Forms
📍 Where to Find Lepidolite in the US
Uses & Applications
Major lithium ore (batteries, ceramics, glass), collectors specimens, decorative stone.
💰 Collector Value Guide
Common massive: $5–$30/lb. Lepidolite with tourmaline: $30–$300. Premium Maine pegmatite specimens: $50–$500.
Find Lepidolite With Our Tools
Use the We Lick Rocks app to identify specimens, find dig sites, and connect with local rockhounds.