Presentation Information
[R7P-02]Amygdale minerals in the alkali basalt from Kabeshima Island, Saga Prefecture, SW Japan[Presentation award entry]
*Satsuki Kio1, Terumi Ejima1 (1. Shinshu Univ. Sci)
Keywords:
amygdale minerals,basalt,Kabeshima,cobalt
In this study, the amygdale minerals of alkali basalt from Kabeshima Island Saga Prefecture were described. The minerals were observed, and the chemical compositions were determined using a field emission electron probe micro analyzer. The amygdale minerals mainly consist of fine white-pale blue aggregate minerals, and rarely calcite, Fe-Ti oxide, Mn oxide, and dark blue mineral. The white-pale blue minerals have a spongy texture and are composed mainly of Mg, Al, and Si, and might be a type of clay mineral or zeolite. The dark blue mineral is porous and Co-bearing Mn-oxide.
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