Andesine

(Na,Ca)(Si,Al)4O8

Cleavage: [001] Perfect, [010] Good
Color: Colorless, Gray, Yellow green, White.
Density: 2.66 - 2.68, Average = 2.67
Diaphaniety: Transparent to Subtransparent to translucent
Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habits: Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Crystalline - Coarse - Occurs as well-formed coarse sized crystals,
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Hardness: 7 - Quartz
Luminescence: Non-fluorescent.
Luster: Vitreous (Glassy)
Streak: white