Amblygonite
ID: 93
Amblygonite
Chemical Formula
(Li,Na)AlPO4(F,OH)
Hardness (Mohs)
5.5 - 6
Crystal System
Triclinic
Streak
White
Luster
Vitreous, greasy, pearly on cleavages
Diaphaneity
Transparent to translucent
Color
Colorless, white, gray, yellow, green, pink, lilac
Crystal Habit / Mode of Occurrence
Typically prismatic or equant crystals, often with complex faces. Can also be massive or granular.
Fun Facts
Amblygonite is an important ore mineral for lithium. Its name comes from the Greek words "amblys" (blunt) and "gonia" (angle), referring to the obtuse angles often present in its crystals