General Information:
Chemical Formula:BaAl2Si3O10·4(H2O)
Composition:(Molecular Weight = 507.60 gm)Barium 27.05 %
BaAluminum 10.63 %
AlSilicon 16.60 %
SiHydrogen 1.59 %
H Oxygen 44.13 %
O Empirical Formula: BaAl2Si3O10·4(H2O)
IMA Status:Approved IMA
Locality:Kilpatrick Hills, near Glasgow, Dumbarton, Scotland.
Name Origin:Named after the discoverer of the mineral, Edington from Glasgow, Scotland.
Physical Properties: Cleavage:[110] Perfect
Color:brownish gray, colorless, gray, white, or pink.
Density:2.69 - 2.7, Average = 2.69
Diaphaniety:Transparent to translucent
Habits:Pseudo Tetragonal - Crystals show a tetragonal shape., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:4-5 - Fluorite-Apatite
Luster:Vitreous (Glassy)
Streak:white
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