General Information:
Chemical Formula:(Na,Ca)4[Al3Si9O24]Cl
Composition:(Molecular Weight = 879.29 gm)Sodium 5.23 %
NaCalcium 9.12 %
CaAluminum 9.21 %
AlSilicon 28.75 %
SiChlorine 4.03 %
ClOxygen 43.67 %
O Empirical Formula: Na2Ca2Al3Si9O24Cl
IMA Status:Not IMA Approved
Locality:Otter Lake, Canada.
Name Origin:From the Greek skapos - "rod" and lithos - "stone."
Physical Properties: Cleavage:[100] Distinct, [110] Distinct
Color:white, gray, pale brown, pink, or yellow.
Density:2.56 - 2.77, Average = 2.66
Habits:Massive - Granular - Common texture observed in granite and other igneous rock., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,
Hardness:6 - Orthoclase
Luminescence:Fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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