General Information:
Chemical Formula:
CaCO3·6(H2O)
Composition:
(Molecular Weight = 208.18 gm)
Calcium 19.25 % Ca
Hydrogen 5.81 % H
Carbon 5.77 % C
Oxygen 69.17 % O
Empirical Formula:
Ca(CO3)·6(H2O)
Environment:
In cold, saline marine waters where the formation of calcite is inhibited. Decomposes into water and calcite above 8 deg. C.
IMA Status:
Approved IMA 1963
Locality:
Ika Fjord, Ivigtut, Greenland.
Name Origin:
After its locality.
Physical Properties:
Color:
chalky white.
Density:
1.77 - 1.8, Average = 1.78
Habits:
Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite)., Tabular - Form dimensions are thin in one direction.,
Luster:
Earthy (Dull)
Streak:
white
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