Leucite

KAlSi2O6

Cleavage: [110] Indistinct
Color: Colorless, Gray, Yellow gray, White.
Density: 2.47
Diaphaniety: Translucent to transparent
Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Hardness: 6 - Orthoclase
Luminescence: Non-fluorescent.
Luster: Vitreous (Glassy)
Magnetism: Nonmagnetic
Streak: white