Hizenite-(Y), Ca2Y6(CO3)11·14H2O, a new mineral in alkali olivine basalt from Mitsukoshi, Karatsu, Saga Prefecture, Japan

Yasuhiro Takai, Seiichiro Uehara

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Abstract

Hizenite-(Y), ideal formula Ca2Y6(CO3)11·14H2O, occurs in druse of alkali olivine basalt at Mitsukoshi, Karatsu, Saga Prefecture, Japan. It occurs as a platy crystal and forms spherical aggregates. Hizenite-(Y) closely associates with lokkaite-(Y), tengerite-(Y), and kimuraite-(Y). It is orthorhombic, a = 6.295(1) Å, b = 9.089(2) Å, c = 63.49(1) Å, V = 3632(1) Å3, Z = 4. Hizenite-(Y) is white in color with vitreous to silky luster. The density is 2.98 g/cm3 (calc), and there is a perfect cleavage on {001}. The strongest lines in the X-ray powder diffraction pattern are [d (I/I0)hkl] 10.63 (100) 006, 6.384 (77) 0·0·10, 3.962 (51) 0·0·16, 3.821 (27) 029, 1·0·13, 2.060 (23) 306, 0·4·13, 15.57 (20) 004.

Original languageEnglish
Pages (from-to)161-165
Number of pages5
JournalJournal of Mineralogical and Petrological Sciences
Volume108
Issue number3
DOIs
Publication statusPublished - Sep 3 2013

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All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

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