Amblygonite
Amblygonite is a fluorophosphate mineral, AlPO₄, composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars. Its density, cleavage and... Wikipedia
Hardness: 5.5–6
Birefringence: .020 –.027
Cleavage: Perfect,, good,, distinct
Color: Generally white or creamy, but can also be colorless or pale yellow, green, blue, beige, gray, brown or pink
Crystal class: Pinacoidal (1); (same H-M symbol)
Crystal habit: Prismatic to columnar form
Crystal system: Triclinic