General Information:
Chemical Formula:(Ca,Na)4Mg3(Fe+++,Fe++,Al)3[(Si,Al)O42](OH)6·n(H2O) (n~11.3)
Composition:(Molecular Weight = 1,854.54 gm)Sodium 0.37 %
NaCalcium 8.00 %
CaMagnesium 3.93 %
MgAluminum 6.11 %
AlIron 8.43 %
FeSilicon 20.44 %
SiHydrogen 1.55 %
H Oxygen 51.16 %
O Empirical Formula: Ca3.7Na0.3Mg3Fe3+1.4Fe2+1.4Al4.2Si13.5O42(OH)6·11.3(H2O)
Environment:Alteration product in basalts and andesites. Hydrothermal zeolite.
IMA Status:Approved IMA 1986
Locality:TL: Spain, Caserras, Aragon and St. Pandelon, Landes, France.
Name Origin:Named from the Greek root "aer-", alluding to atmosphere or sky and hence the color, sky blue.
Physical Properties: Color:blue, blue green, or sky blue.
Density:2.48
Diaphaniety:Translucent
Habits:Fibrous - Crystals made up of fibers., ,
Hardness:3 - Calcite
Luster:Vitreous (Glassy)
Streak:bluish white
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