General Information:
Chemical Formula:Ca7Si6(CO3)O18·2(H2O)
Composition:(Molecular Weight = 833.09 gm)Calcium 33.68 %
CaSilicon 20.23 %
SiHydrogen 0.48 %
H Carbon 1.44 %
C Oxygen 44.17 %
O Empirical Formula: Ca7Si6(CO3)O18·2(H2O)
Environment:Rare constituant of hybrid rocks formed by the assimilation of limestone by dolerite.
Locality:Scawt Hill, Antrim, Ireland.
Name Origin:Named after its locality.
Physical Properties: Cleavage:[001] Perfect, [010] Poor
Color:colorless.
Density:2.77
Diaphaniety:Transparent
Habits:Platy - Sheet forms (e.g. micas)., ,
Hardness:4-5 - Fluorite-Apatite
Luster:Vitreous (Glassy)
Streak:white
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