General Information:
Chemical Formula:CaY2(CO3)4·6(H2O)
Composition:(Molecular Weight = 566.02 gm)Calcium 7.08 %
CaYttrium 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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