Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2016 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : R7-05
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R7: Petorology, mineralogy and economic geology (Joint session with SRG)
Theophrastite (Ni(OH)2) from Fujiwara metaperidotites from the Sanbagawa belt, Ehime Prefecture, Japan
*Shoji AraiSatoko IshimaruMakoto MiuraNOrikatsu AkizawaTomoyuki MIzukamiTadao Nishiyama
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Abstract
Theophrastite (Ni(OH)2) was found from a Fujiwara metaperidotite, the Sanbagawa belt, Ehime Prefecture. Antigorate, olivine, magnetite, chromite and Ti-clinohumite are the main minerals, with small amounts of sulfides (e.g., heazlewoodite), awaruite and arsenides. Theophrastite is closely associated with heazlewoodite, and is interpreted as its hydration decomposition at a low-T condition.
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© 2016 Japan Association of Mineralogical Sciences
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