Properties
| Category | Phyllosilicate minerals |
|---|---|
| Formula | K(Li,Al)3(Al,Si)4O10(F,OH)2 |
| Crystal system | Monoclinic |
| Color | Pink, light purple, purple, rose-red, violet-gray, yellowish, white, colorless other colors possible but are rare. |
| Crystal habit | Tabular to prismatic pseudohexagonal crystals, scaly aggregates and massive |
| Cleavage | {001} perfect |
| Fracture | Uneven |
| Mohs scale hardness | 2.5–3 |
| Luster | Vitreous to pearly |
| Streak | White |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 2.8–2.9 |
From the Wikipedia article
Lepidolite is the common name for a lilac-gray or rose-colored series of minerals in the mica group. The mineralogical name for this series is the polylithionite-trilithionite series. Lepidolite has a chemical formula of K(Li,Al)3(Al,Si)4O10(F,OH)2. It is the most abundant lithium-bearing mineral and is a secondary source of this metal. It is also the major source of the alkali metal rubidium, which substitutes for potassium.
Source
Source record: crystal-compendium/lepidolite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Lepidolite — revision id 1331300343. Text and properties from Wikipedia, licensed CC BY-SA 4.0.