Kainosite-(Y)

General Information:
 Chemical Formula:
Ca2(Y,Ce)2Si4O12(CO3)·(H2O)
 IMA Status:
Approved IMA 1987
 Locality:
Island of Hiero, Vest-Agder, Norway.
Physical Properties:
 Cleavage:
[???] Good
 Color:
brown, colorless, green yellow, yellow, or light yellow brown.
 Density:
3.4 - 3.6, Average = 3.5
 Diaphaniety:
Transparent to translucent
 Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., ,
 Hardness:
5-6 - Between Apatite and Orthoclase
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
More details...