General Information:
Chemical Formula:
(Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4,CO3)2-3
Locality:
Mte Somma, Vesuvius, Italy.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[???] Perfect
Color:
colorless or white.
Density:
2.42 - 2.53, Average = 2.47
Diaphaniety:
Transparent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Crystalline - Fine - Occurs as well-formed fine sized crystals.,
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
More details...