General Information:
Chemical Formula:
CaY2(CO3)4·6(H2O)
Composition:
(Molecular Weight = 566.02 gm)
Calcium 7.08 % Ca
Yttrium 31.41 % Y
Hydrogen 2.14 % H
Carbon 8.49 % C
Oxygen 50.88 % O
Empirical Formula:
CaY2(CO3)4·6(H2O)
Environment:
Secondary mineral found in alkali olivine basalt.
IMA Status:
Approved IMA 1987
Locality:
Kirigo, Hizen, Higashi, Matsuura, Saga Prefecture, Japan.
Name Origin:
Named ofr Kenjiro Kimura (1896-), Geochemist, University of Japan.
Physical Properties:
Cleavage:
[010] Perfect
Color:
white, light purple pink, or light pink.
Density:
2.6
Habits:
Spherical - Spherical, rounded aggregates., Aggregates - Made of numerous individual crystals or clusters.,
Hardness:
2.5 - Finger Nail
Luminescence:
Fluorescent, Short UV=reddish purple, Long UV=purple.
Luster:
Vitreous - Silky
Streak:
white
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