Presentation Information
[R1P-07]Whewellite from Ishidera, Wazuka, Kyoto Prefecture, Japan
*Yohei Shirose1, Kenji Tsuruta2, Norimasa Shimobayashi3 (1. Grad. Sch., Ehime Univ., 2. Kyoto City Univ. Arts., 3. Grad. Sch., Kyoto Univ.)
Keywords:
whewellite,weddellite,oxalates,hydrothermal alteration,Ishidera
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Whewellite was found in quartz vein from Ishidera, Wazuka, Kyoto Prefecture, Japan. This is first discovery of whewellite in Japan. Whewellite occurs on altered fluorapatite with weddellite and crandallite-florencite. The average chemical composition is (Ca0.97Fe0.01Al0.01) (C2O4)0.99(PO4)0.01·0.94H2O. The unit cell parameters are a = 6.288(7), b = 14.57(1), c = 10.097(8) Å, β = 109.37(9)°, V = 873(1) Å3. The oxalates were formed after a dissolution of fluorapatite.
Whewellite was found in quartz vein from Ishidera, Wazuka, Kyoto Prefecture, Japan. This is first discovery of whewellite in Japan. Whewellite occurs on altered fluorapatite with weddellite and crandallite-florencite. The average chemical composition is (Ca0.97Fe0.01Al0.01) (C2O4)0.99(PO4)0.01·0.94H2O. The unit cell parameters are a = 6.288(7), b = 14.57(1), c = 10.097(8) Å, β = 109.37(9)°, V = 873(1) Å3. The oxalates were formed after a dissolution of fluorapatite.