Presentation Information
[R1P-08]The higher hydrated analogue of zaccagnaite from the Ikuno mine, Hyogo Prefecture, Japan
*Masayuki Ohnishi1, Norimasa Shimobayashi2, Daisuke Nishio-Hamane3, Shoichi Kobayashi4, Takeshi Hisano5 (1. Non, 2. Sci., Kyoto Univ., 3. ISSP, Univ. of Tokyo, 4. Sci., Okayama Univ. of Sci., 5. Kwansei Gakuin Univ.)
Keywords:
zaccagnaite,glaucocerinite,hydrotalcite supergroup,Ikuno mine
<div class="is-print-hide" style="height:0; overflow:hidden; max-width:100%; padding-bottom:84%; position:relative;"><iframe allow="fullscreen" allowfullscreen="true" frameborder="0" src="https://confit2.atlas.jp/articles/event/jams2021/slide/R1P-08", style="height:100%; left:0; position:absolute; top:0; width:100%;"></iframe></div>
The higher hydrated analogue of zaccagnaite, ideally Zn4Al2(OH)12[CO3]·nH2O (n > 3), from the Ikuno mine, Hyogo Prefecture, Japan. The mineral occurs as crusts of hexagonal platy crystals up to 80 μm across and 3 μm in thickness, in association with calcite and "limonite". It is pale blue to pale blue-green with pearly to vitreous luster. The mineral is space group R-3m, a = 3.058(2) and c = 32.63(9) Å. It can also be considered as the CO3-dominant analogue of glaucocerinite.
The higher hydrated analogue of zaccagnaite, ideally Zn4Al2(OH)12[CO3]·nH2O (n > 3), from the Ikuno mine, Hyogo Prefecture, Japan. The mineral occurs as crusts of hexagonal platy crystals up to 80 μm across and 3 μm in thickness, in association with calcite and "limonite". It is pale blue to pale blue-green with pearly to vitreous luster. The mineral is space group R-3m, a = 3.058(2) and c = 32.63(9) Å. It can also be considered as the CO3-dominant analogue of glaucocerinite.