General Information:
Chemical Formula:(K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O)
Environment:Ca-rich xenoliths in leucite tephrite lava.
IMA Status:Approved IMA 1991
Locality:Bellberg volcano, Mayen, Laacher See area, Eifel, Germany.
Name Origin:Named for the locality.
Physical Properties: Cleavage:None
Color:colorless or white.
Density:2.2
Diaphaniety:Transparent
Habits:Pyramidal - Crystals are shaped like pyramids., ,
Hardness:5 - Apatite
Luster:Vitreous (Glassy)
Streak:white
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