Properties
| Category | Inosilicate minerals (single chain) |
|---|---|
| Formula | lithium aluminium silicate, LiAl(SiO3)2 |
| Crystal system | Monoclinic |
| Color | Highly variable: white, colorless, gray, pink, lilac, violet, yellow and green, may be bicolored; emerald green – hiddenite; lilac – kunzite; yellow – triphane |
| Crystal habit | prismatic, generally flattened and elongated, striated parallel to {100}, commonly massive |
| Cleavage | Perfect prismatic, two directions {110} ∧ {110} at 87° |
| Fracture | Uneven to subconchoidal |
| Tenacity | Brittle |
| Mohs scale hardness | 6.5–7 |
| Luster | Vitreous, pearly on cleavage |
| Streak | white |
| Specific gravity | 3.03–3.23 |
From the Wikipedia article
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl(SiO3)2, and is a commercially important source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), or alternatively yellowish-green or emerald-green hiddenite; it takes the form of prismatic crystals, often of great size. Single crystals of 14.3 m (47 ft) in size are reported from the Black Hills of South Dakota, United States.
Source
Source record: crystal-compendium/spodumene/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Spodumene — revision id 1350073376. Text and properties from Wikipedia, licensed CC BY-SA 4.0.